//http://isotopescreencapture.codeplex.com/
//The MIT License (MIT)
using System.Collections.Generic;
using System.Linq;
namespace Isotope.Collections.Ranges
{
public static partial class EnumerableUtil
{
public static IEnumerable<T> Single<T>(T item)
{
yield return item;
}
/// <summary>
/// Given a range (start,end) and a number of steps, will yield that a number for each step
/// </summary>
/// <param name="start"></param>
/// <param name="end"></param>
/// <param name="steps"></param>
/// <returns></returns>
public static IEnumerable<double> RangeSteps(double start, double end, int steps)
{
// for non-positive number of steps, yield no points
if (steps < 1)
{
yield break;
}
// for exactly 1 step, yield the start value
if (steps == 1)
{
yield return start;
yield break;
}
// for exactly 2 stesp, yield the start value, and then the end value
if (steps == 2)
{
yield return start;
yield return end;
yield break;
}
// for 3 steps or above, start yielding the segments
// notice that the start and end values are explicitly returned so that there
// is no possibility of rounding error affecting their values
int segments = steps - 1;
double total_length = end - start;
double stepsize = total_length / segments;
yield return start;
for (int i = 1; i < (steps - 1); i++)
{
double p = start + (stepsize * i);
yield return p;
}
yield return end;
}
public static IEnumerable<TGROUP> GroupByCount<T, TGROUP>(
IEnumerable<T> items,
int group_size,
System.Func<int, TGROUP> func_new_col,
System.Action<TGROUP, int, T> func_add) where TGROUP : class
{
if (items == null)
{
throw new System.ArgumentNullException("items");
}
if (group_size < 1)
{
throw new System.ArgumentOutOfRangeException("group_size");
}
if (func_new_col == null)
{
throw new System.ArgumentNullException("func_new_col");
}
if (func_add == null)
{
throw new System.ArgumentNullException("func_add");
}
int cur_group_size = 0;
TGROUP cur_group = null;
foreach (var item in items)
{
if (cur_group_size == 0)
{
if (cur_group == null)
{
cur_group = func_new_col(group_size);
}
else
{
throw new System.InvalidOperationException();
}
}
func_add(cur_group, cur_group_size, item);
cur_group_size++;
if (cur_group_size == group_size)
{
yield return cur_group;
cur_group = null;
cur_group_size = 0;
}
}
if (cur_group_size > 0)
{
if (cur_group == null)
{
throw new System.InvalidOperationException();
}
yield return cur_group;
}
}
public static IEnumerable<TGROUP> GroupByCount<T, TGROUP>(ICollection<T> items, ICollection<int> group_sizes, System.Func<int, TGROUP> func_new_col, System.Action<TGROUP, int, T> func_add)
{
if (items == null)
{
throw new System.ArgumentNullException("items");
}
if (group_sizes == null)
{
throw new System.ArgumentNullException("group_sizes");
}
if (func_new_col == null)
{
throw new System.ArgumentNullException("func_new_col");
}
if (func_add == null)
{
throw new System.ArgumentNullException("func_add");
}
int total_group_sizes = group_sizes.Sum();
if (total_group_sizes != items.Count)
{
throw new System.ArgumentException("group_sizes must account for all items");
}
int items_added = 0;
for (int group_index = 0; group_index < group_sizes.Count; group_index++)
{
int cur_group_size = group_sizes.ElementAt(group_index);
if (cur_group_size < 0)
{
throw new System.ArgumentException("group_sizes contains a negative numver");
}
var cur_group = func_new_col(cur_group_size);
for (int row_index = 0; row_index < cur_group_size; row_index++)
{
var cur_item = items.ElementAt(items_added);
func_add(cur_group, row_index, cur_item);
items_added++;
}
yield return cur_group;
}
}
public static IDictionary<K, List<V>> Bucketize<K, V>(IEnumerable<V> items, System.Func<V, K> func_get_key, IEqualityComparer<K> ieq)
{
if (items == null)
{
throw new System.ArgumentNullException("items");
}
if (func_get_key == null)
{
throw new System.ArgumentNullException("func_get_key");
}
var dic = new Dictionary<K, List<V>>(ieq);
foreach (var item in items)
{
var key = func_get_key(item);
List<V> list = null;
bool found = dic.TryGetValue(key, out list);
if (!found)
{
list = new List<V>();
dic[key] = list;
}
list.Add(item);
}
return dic;
}
public static IDictionary<K, List<V>> Bucketize<K, V>(IEnumerable<V> items, System.Func<V, K> func_get_key)
{
IEqualityComparer<K> ieq = null;
return Bucketize<K, V>(items, func_get_key, ieq);
}
public static IDictionary<K, int> Histogram<K, V>(IEnumerable<V> items, System.Func<V, K> func_get_key, IEqualityComparer<K> ieq)
{
if (items == null)
{
throw new System.ArgumentNullException("items");
}
if (func_get_key == null)
{
throw new System.ArgumentNullException("func_get_key");
}
var dic = new Dictionary<K, int>(ieq);
foreach (var item in items)
{
var key = func_get_key(item);
int old_value = 0;
bool found = dic.TryGetValue(key, out old_value);
if (!found)
{
dic[key] = 1;
}
else
{
dic[key] = old_value + 1;
}
}
return dic;
}
public static IDictionary<T, int> Histogram<T>(IEnumerable<T> items)
{
var dic = Histogram(items, i => i, null);
return dic;
}
public static List<List<T>> Chunkify<T>(IEnumerable<T> items, int chunksize)
{
var chunks = new List<List<T>>();
List<T> cur_chunk = null;
Chunkify(items, chunksize,
() =>
{
cur_chunk = new List<T>(chunksize); chunks.Add(cur_chunk);
},
item =>
{
cur_chunk.Add(item);
});
return chunks;
}
public static void Chunkify<T>(IEnumerable<T> items, int chunksize, System.Action create_chunk, System.Action<T> add_item)
{
if (items == null)
{
throw new System.ArgumentNullException("items");
}
if (chunksize < 1)
{
throw new System.ArgumentOutOfRangeException("chunksize");
}
int item_count = 0;
int curchunk_size = 0;
foreach (T item in items)
{
if ((item_count % chunksize) == 0)
{
create_chunk();
curchunk_size = 0;
}
add_item(item);
item_count++;
curchunk_size++;
}
}
}
public struct DoubleRange
{
public readonly double _Lower;
public readonly double _Upper;
public double Lower
{
get { return this._Lower; }
}
public double Upper
{
get { return this._Upper; }
}
private DoubleRange(double lower, double upper)
{
this._Lower = lower;
this._Upper = upper;
}
/// <summary>
/// Creates a range from the lower and upper values
/// </summary>
/// <example>
/// (0,0) -> [0]
/// (0,1) -> [0,1]
/// (0,5) -> [0,1,2,3,4,5]
/// (2,5) -> [2,3,4,5]
/// </example>
/// <param name="lower"></param>
/// <param name="upper"></param>
/// <returns></returns>
public static DoubleRange FromEndpoints(double lower, double upper)
{
return new DoubleRange(lower, upper);
}
public double Length
{
get { return this.Upper - this.Lower; }
}
public override string ToString()
{
var invariant_culture = System.Globalization.CultureInfo.InvariantCulture;
return string.Format(invariant_culture, "Range({0},{1})", this.Lower, this.Upper);
}
private static bool _intersects_exclusive(DoubleRange range1, DoubleRange range2)
{
bool val = (range1.Lower < range2.Lower) && (range1.Upper > range2.Lower);
return val;
}
private static bool _intersects_inclusive(DoubleRange range1, DoubleRange range2)
{
bool val = (range1.Lower <= range2.Lower) && (range1.Upper >= range2.Upper);
return val;
}
/// <summary>
/// Tests if this range interests with another
/// </summary>
/// <param name="range">the other range</param>
/// <returns>true if they intersect</returns>
public bool IntersectsExclusive(DoubleRange range)
{
bool val = _intersects_exclusive(this, range) || _intersects_exclusive(range, this);
return val;
}
public bool IntersectsInclusive(DoubleRange range)
{
bool val = _intersects_inclusive(this, range) || _intersects_inclusive(range, this);
return val;
}
private static bool _touches(DoubleRange range1, DoubleRange range2)
{
var val = (range1.Upper == range2.Lower);
return val;
}
/// <summary>
/// Tests if this range touches another. For example (1-2) touches (3,5) but (1,2) does not touch (4,5)
/// </summary>
/// <param name="range">the other range</param>
/// <returns>true if they touch</returns>
public bool Touches(DoubleRange range)
{
var val = _touches(this, range) || _touches(range, this);
return val;
}
/// <summary>
/// Tests if this range contains a specific double
/// </summary>
/// <param name="n">the double</param>
/// <returns>true if the number is contained</returns>
public bool Contains(double n)
{
return (this.Lower <= n) && (n <= this.Upper);
}
/// <summary>
/// Join this range with another and return a single range that contains them both. The ranges must either touch or interest.
/// for example (0,2) amd (3,7) will yield (0,7)
/// </summary>
/// <param name="range">the other range</param>
/// <returns>the merged range</returns>
public DoubleRange JoinWith(DoubleRange range)
{
if (this.IntersectsExclusive(range) || this.Touches(range))
{
double new_Upper = System.Math.Max(this.Upper, range.Upper);
double new_Lower = System.Math.Min(this.Lower, range.Lower);
return DoubleRange.FromEndpoints(new_Lower, new_Upper);
}
else
{
throw new System.ArgumentException("Ranges cannot be joined because they do not touch or overlap");
}
}
public IEnumerable<double> Values
{
get
{
double step = 1.0;
return this.GetValues(step);
}
}
public IEnumerable<double> GetValues(double step)
{
if (step <= 0.0)
{
throw new System.ArgumentOutOfRangeException("step", "must be positive");
}
double i = this.Lower;
while (i <= this.Upper)
{
yield return i;
i += step;
}
}
}
public class SparseDoubleRange
{
private List<DoubleRange> ranges;
public SparseDoubleRange()
{
this.clear();
}
public IEnumerable<DoubleRange> Ranges
{
get
{
foreach (var range in this.ranges)
{
yield return range;
}
}
}
public double Count
{
get
{
double length = this.ranges.Aggregate(0.0, (old, rng) => old + rng.Length);
return length;
}
}
private void clear()
{
this.ranges = new List<DoubleRange>();
}
public int RangeCount
{
get { return this.ranges.Count; }
}
public void AddInclusive(double lower, double upper)
{
var rng = DoubleRange.FromEndpoints(lower, upper);
this.Add(rng);
}
public void Add(DoubleRange range)
{
var left = new List<DoubleRange>();
var right = new List<DoubleRange>();
foreach (var rng in this.ranges)
{
if (range.IntersectsExclusive(rng) || range.Touches(rng))
{
range = range.JoinWith(rng);
}
else if (rng.Upper < range.Lower)
{
left.Add(rng);
}
else if (range.Upper < rng.Lower)
{
right.Add(rng);
}
else
{
throw new System.InvalidOperationException("Internal Error");
}
}
this.ranges = left.Concat(EnumerableUtil.Single(range)).Concat(right).ToList();
}
public double Lower
{
get
{
if (this.ranges.Count < 1)
{
throw new System.InvalidOperationException("empty");
}
return this.ranges[0].Lower;
}
}
public double Upper
{
get
{
if (this.ranges.Count < 1)
{
throw new System.InvalidOperationException("empty");
}
return this.ranges[this.ranges.Count - 1].Upper;
}
}
public void RemoveInclusive(int lower, int upper)
{
var rng = DoubleRange.FromEndpoints(lower, upper);
this.RemoveInclusive(rng);
}
public void RemoveExclusive(int lower, int upper)
{
if ((upper - lower) > (2 * double.Epsilon))
{
var rng = DoubleRange.FromEndpoints(lower + double.Epsilon, upper - double.Epsilon);
this.RemoveInclusive(rng);
}
}
public void RemoveInclusive(DoubleRange range)
{
// if the range doesn't intersect this collection do nothing
if (!range.IntersectsInclusive(DoubleRange.FromEndpoints(this.Lower, this.Upper)))
{
return;
}
var middle = new List<DoubleRange>();
foreach (var S in this.ranges)
{
if (!range.IntersectsInclusive(S))
{
middle.Add(S);
continue;
}
if ((range.Lower <= S.Lower) && (range.Upper >= S.Upper))
{
// disregard S completely
continue;
}
if (range.Lower > S.Lower)
{
if (S.Lower <= (range.Lower - double.Epsilon))
{
var X = DoubleRange.FromEndpoints(S.Lower, range.Lower);
middle.Add(X);
}
}
if (range.Upper <= S.Upper)
{
if ((range.Upper + double.Epsilon) <= S.Upper)
{
var X = DoubleRange.FromEndpoints(range.Upper, S.Upper);
middle.Add(X);
}
}
else
{
throw new System.InvalidOperationException("internal error");
}
}
this.ranges = middle;
}
public DoubleRange? FindRangeContainingNumber(double n)
{
foreach (var rng in this.ranges)
{
if (rng.Contains(n))
{
return rng;
}
}
return null;
}
public bool Contains(double n)
{
var rng = this.FindRangeContainingNumber(n);
return rng != null ? true : false;
}
public override string ToString()
{
var sb = new System.Text.StringBuilder();
sb.AppendFormat("{0}(", this.GetType().Name);
foreach (var rng in this.ranges)
{
sb.Append(rng.ToString());
}
sb.Append(")");
return sb.ToString();
}
public IEnumerable<double> Values
{
get
{
foreach (var rng in this.Ranges)
{
foreach (int i in rng.Values)
{
yield return i;
}
}
}
}
public IEnumerable<double> GetValues(double step)
{
foreach (var rng in this.Ranges)
{
foreach (double i in rng.GetValues(step))
{
yield return i;
}
}
}
}
}
ASP.NET & Csharp (C#)
ASP.NET & Csharp (C#) , Here you can find my posts about .NET c# .
Int Range
//http://isotopescreencapture.codeplex.com/
//The MIT License (MIT)
using System.Collections.Generic;
namespace Isotope.Collections.Ranges
{
public struct IntRange
{
public readonly int _Lower;
public readonly int _Length;
public int Lower
{
get { return this._Lower; }
}
public int Upper
{
get { return this.Lower + this.Length – 1; }
}
public int Length
{
get { return this._Length; }
}
private IntRange(int lower, int length)
{
this._Lower = lower;
this._Length = length;
if (this.Lower > this.Upper)
{
throw new System.OverflowException();
}
}
///
///
///
/// (0,0) -> [0]
/// (0,1) -> [0,1]
/// (0,5) -> [0,1,2,3,4,5]
/// (2,5) -> [2,3,4,5]
///
///
///
///
public static IntRange FromEndpoints(int lower, int upper)
{
return new IntRange(lower, upper – lower + 1);
}
///
///
///
///
public static IntRange FromInteger(int value)
{
return new IntRange(value, 1);
}
///
///
///
/// (2,0) -> []
/// (2,1) -> [2]
/// (2,2) -> [2,3]
/// (2,3) -> [2,3,4]
/// (2,4) -> [2,3,4,5]
///
///
///
///
public static IntRange FromLower(int lower, int length)
{
if (length < 0)
{
throw new System.ArgumentOutOfRangeException("length", "must be >= 0″);
}
return new IntRange(lower, length);
}
public override string ToString()
{
var invariant_culture = System.Globalization.CultureInfo.InvariantCulture;
return string.Format(invariant_culture, “Range({0},{1})”, this.Lower, this.Upper);
}
private static bool _intersects(IntRange range1, IntRange range2)
{
return ((range1.Lower <= range2.Lower) && (range1.Upper >= range2.Lower));
}
///
///
/// the other range
///
public bool Intersects(IntRange range)
{
return (_intersects(this, range) || _intersects(range, this));
}
private static int Delta = 1;
private static bool _touches(IntRange range1, IntRange range2)
{
var val = (range1.Upper + Delta) == range2.Lower;
return val;
}
///
///
/// the other range
///
public bool Touches(IntRange range)
{
var val = _touches(this, range) || _touches(range, this);
return val;
}
///
///
/// the integet
///
public bool Contains(int n)
{
return ((this.Lower <= n) && (n <= this.Upper));
}
///
/// for example (0,2) amd (3,7) will yield (0,7)
///
/// the other range
///
public IntRange JoinWith(IntRange range)
{
if (this.Intersects(range) || this.Touches(range))
{
int new_Upper = System.Math.Max(this.Upper, range.Upper);
int new_Lower = System.Math.Min(this.Lower, range.Lower);
return IntRange.FromEndpoints(new_Lower, new_Upper);
}
else
{
throw new System.ArgumentException();
}
}
///
///
///
public IEnumerable
{
get
{
for (int i = this.Lower; i <= this.Upper; i++)
{
yield return i;
}
}
}
}
}
[/csharp]
Double Range
//http://isotopescreencapture.codeplex.com/
//The MIT License (MIT)
using System.Collections.Generic;
namespace Isotope.Collections.Ranges
{
public struct DoubleRange
{
public readonly double _Lower;
public readonly double _Upper;
public double Lower
{
get { return this._Lower; }
}
public double Upper
{
get { return this._Upper; }
}
private DoubleRange(double lower, double upper)
{
this._Lower = lower;
this._Upper = upper;
}
///
///
///
/// (0,0) -> [0]
/// (0,1) -> [0,1]
/// (0,5) -> [0,1,2,3,4,5]
/// (2,5) -> [2,3,4,5]
///
///
///
///
public static DoubleRange FromEndpoints(double lower, double upper)
{
return new DoubleRange(lower, upper);
}
public double Length
{
get { return this.Upper – this.Lower; }
}
public override string ToString()
{
var invariant_culture = System.Globalization.CultureInfo.InvariantCulture;
return string.Format(invariant_culture, “Range({0},{1})”, this.Lower, this.Upper);
}
private static bool _intersects_exclusive(DoubleRange range1, DoubleRange range2)
{
bool val = (range1.Lower < range2.Lower) && (range1.Upper > range2.Lower);
return val;
}
private static bool _intersects_inclusive(DoubleRange range1, DoubleRange range2)
{
bool val = (range1.Lower <= range2.Lower) && (range1.Upper >= range2.Upper);
return val;
}
///
///
/// the other range
///
public bool IntersectsExclusive(DoubleRange range)
{
bool val = _intersects_exclusive(this, range) || _intersects_exclusive(range, this);
return val;
}
public bool IntersectsInclusive(DoubleRange range)
{
bool val = _intersects_inclusive(this, range) || _intersects_inclusive(range, this);
return val;
}
private static bool _touches(DoubleRange range1, DoubleRange range2)
{
var val = (range1.Upper == range2.Lower);
return val;
}
///
///
/// the other range
///
public bool Touches(DoubleRange range)
{
var val = _touches(this, range) || _touches(range, this);
return val;
}
///
///
/// the double
///
public bool Contains(double n)
{
return (this.Lower <= n) && (n <= this.Upper);
}
///
/// for example (0,2) amd (3,7) will yield (0,7)
///
/// the other range
///
public DoubleRange JoinWith(DoubleRange range)
{
if (this.IntersectsExclusive(range) || this.Touches(range))
{
double new_Upper = System.Math.Max(this.Upper, range.Upper);
double new_Lower = System.Math.Min(this.Lower, range.Lower);
return DoubleRange.FromEndpoints(new_Lower, new_Upper);
}
else
{
throw new System.ArgumentException(“Ranges cannot be joined because they do not touch or overlap”);
}
}
public IEnumerable
{
get
{
double step = 1.0;
return this.GetValues(step);
}
}
public IEnumerable
{
if (step <= 0.0)
{
throw new System.ArgumentOutOfRangeException("step", "must be positive");
}
double i = this.Lower;
while (i <= this.Upper)
{
yield return i;
i += step;
}
}
}
}
[/csharp]
Number calculation utils
#region License
/*
* Copyright 2002-2005 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#endregion
#region Imports
using System;
using System.ComponentModel;
#endregion
namespace Spring.Util
{
/// <summary>
/// Various utility methods relating to numbers.
/// </summary>
/// <remarks>
/// <p>
/// Mainly for internal use within the framework.
/// </p>
/// </remarks>
/// <author>Aleksandar Seovic</author>
public sealed class NumberUtils
{
/// <summary>
/// Determines whether the supplied <paramref name="number"/> is an integer.
/// </summary>
/// <param name="number">The object to check.</param>
/// <returns>
/// <see lang="true"/> if the supplied <paramref name="number"/> is an integer.
/// </returns>
public static bool IsInteger(object number)
{
return (number is Int32 || number is Int16 || number is Int64 || number is UInt32
|| number is UInt16 || number is UInt64 || number is Byte || number is SByte);
}
/// <summary>
/// Determines whether the supplied <paramref name="number"/> is a decimal number.
/// </summary>
/// <param name="number">The object to check.</param>
/// <returns>
/// <see lang="true"/> if the supplied <paramref name="number"/> is a decimal number.
/// </returns>
public static bool IsDecimal(object number)
{
return (number is Single || number is Double || number is Decimal);
}
/// <summary>
/// Determines whether the supplied <paramref name="number"/> is of numeric type.
/// </summary>
/// <param name="number">The object to check.</param>
/// <returns>
/// <c>true</c> if the specified object is of numeric type; otherwise, <c>false</c>.
/// </returns>
public static bool IsNumber(object number)
{
return (IsInteger(number) || IsDecimal(number));
}
/// <summary>
/// Determines whether the supplied <paramref name="number"/> can be converted to an integer.
/// </summary>
/// <param name="number">The object to check.</param>
/// <returns>
/// <see lang="true"/> if the supplied <paramref name="number"/> can be converted to an integer.
/// </returns>
public static bool CanConvertToInteger(object number)
{
TypeConverter converter = TypeDescriptor.GetConverter(number);
return (converter.CanConvertTo(typeof(Int32))
|| converter.CanConvertTo(typeof(Int16))
|| converter.CanConvertTo(typeof(Int64))
|| converter.CanConvertTo(typeof(UInt16))
|| converter.CanConvertTo(typeof(UInt64))
|| converter.CanConvertTo(typeof(Byte))
|| converter.CanConvertTo(typeof(SByte))
);
}
/// <summary>
/// Determines whether the supplied <paramref name="number"/> can be converted to an integer.
/// </summary>
/// <param name="number">The object to check.</param>
/// <returns>
/// <see lang="true"/> if the supplied <paramref name="number"/> can be converted to an integer.
/// </returns>
public static bool CanConvertToDecimal(object number)
{
TypeConverter converter = TypeDescriptor.GetConverter(number);
return (converter.CanConvertTo(typeof(Single))
|| converter.CanConvertTo(typeof(Double))
|| converter.CanConvertTo(typeof(Decimal))
);
}
/// <summary>
/// Determines whether the supplied <paramref name="number"/> can be converted to a number.
/// </summary>
/// <param name="number">The object to check.</param>
/// <returns>
/// <c>true</c> if the specified object is decimal number; otherwise, <c>false</c>.
/// </returns>
public static bool CanConvertToNumber(object number)
{
return (CanConvertToInteger(number) || CanConvertToDecimal(number));
}
/// <summary>
/// Is the supplied <paramref name="number"/> equal to zero (0)?
/// </summary>
/// <param name="number">The number to check.</param>
/// <returns>
/// <see lang="true"/> id the supplied <paramref name="number"/> is equal to zero (0).
/// </returns>
public static bool IsZero(object number)
{
if (number is Int32)
return ((Int32)number) == 0;
else if (number is Int16)
return ((Int16)number) == 0;
else if (number is Int64)
return ((Int64)number) == 0;
else if (number is UInt16)
return ((Int32)number) == 0;
else if (number is UInt32)
return ((Int64)number) == 0;
else if (number is UInt64)
return (Convert.ToDecimal(number) == 0);
else if (number is Byte)
return ((Int16)number) == 0;
else if (number is SByte)
return ((Int16)number) == 0;
else if (number is Single)
return ((Single)number) == 0f;
else if (number is Double)
return ((Double)number) == 0d;
else if (number is Decimal)
return ((Decimal)number) == 0m;
return false;
}
/// <summary>
/// Negates the supplied <paramref name="number"/>.
/// </summary>
/// <param name="number">The number to negate.</param>
/// <returns>The supplied <paramref name="number"/> negated.</returns>
/// <exception cref="System.ArgumentException">
/// If the supplied <paramref name="number"/> is not a supported numeric type.
/// </exception>
public static object Negate(object number)
{
if (number is Int32)
return -((Int32)number);
else if (number is Int16)
return -((Int16)number);
else if (number is Int64)
return -((Int64)number);
else if (number is UInt16)
return -((Int32)number);
else if (number is UInt32)
return -((Int64)number);
else if (number is UInt64)
return -(Convert.ToDecimal(number));
else if (number is Byte)
return -((Int16)number);
else if (number is SByte)
return -((Int16)number);
else if (number is Single)
return -((Single)number);
else if (number is Double)
return -((Double)number);
else if (number is Decimal)
return -((Decimal)number);
else
{
throw new ArgumentException(string.Format("'{0}' is not one of the supported numeric types.", number));
}
}
/// <summary>
/// Returns the bitwise not (~) of the supplied <paramref name="number"/>.
/// </summary>
/// <param name="number">The number.</param>
/// <returns>The value of ~<paramref name="number"/>.</returns>
/// <exception cref="System.ArgumentException">
/// If the supplied <paramref name="number"/> is not a supported numeric type.
/// </exception>
public static object BitwiseNot(object number)
{
if (number is bool)
return !((bool)number);
else if (number is Int32)
return ~((Int32)number);
else if (number is Int16)
return ~((Int16)number);
else if (number is Int64)
return ~((Int64)number);
else if (number is UInt16)
return ~((UInt16)number);
else if (number is UInt32)
return ~((UInt32)number);
else if (number is UInt64)
return ~((UInt64)number);
else if (number is Byte)
return ~((Byte)number);
else if (number is SByte)
return ~((SByte)number);
else
{
throw new ArgumentException(string.Format("'{0}' is not one of the supported integer types.", number));
}
}
/// <summary>
/// Bitwise ANDs (&amp;) the specified integral values.
/// </summary>
/// <param name="m">The first number.</param>
/// <param name="n">The second number.</param>
/// <exception cref="System.ArgumentException">
/// If one of the supplied arguments is not a supported integral types.
/// </exception>
public static object BitwiseAnd(object m, object n)
{
CoerceTypes(ref m, ref n);
if (n is bool)
return (bool)m & (bool)n;
else if (n is Int32)
return (Int32)m & (Int32)n;
else if (n is Int16)
return (Int16)m & (Int16)n;
else if (n is Int64)
return (Int64)m & (Int64)n;
else if (n is UInt16)
return (UInt16)m & (UInt16)n;
else if (n is UInt32)
return (UInt32)m & (UInt32)n;
else if (n is UInt64)
return (UInt64)m & (UInt64)n;
else if (n is Byte)
return (Byte)m & (Byte)n;
else if (n is SByte)
return (SByte)m & (SByte)n;
else
{
throw new ArgumentException(string.Format("'{0}' and/or '{1}' are not one of the supported integral types.", m, n));
}
}
/// <summary>
/// Bitwise ORs (|) the specified integral values.
/// </summary>
/// <param name="m">The first number.</param>
/// <param name="n">The second number.</param>
/// <exception cref="System.ArgumentException">
/// If one of the supplied arguments is not a supported integral types.
/// </exception>
public static object BitwiseOr(object m, object n)
{
CoerceTypes(ref m, ref n);
if (n is bool)
return (bool)m | (bool)n;
else if (n is Int32)
return (Int32)m | (Int32)n;
#if NET_2_0
else if (n is Int16)
return (Int16)m | (Int16)n;
#endif
else if (n is Int64)
return (Int64)m | (Int64)n;
else if (n is UInt16)
return (UInt16)m | (UInt16)n;
else if (n is UInt32)
return (UInt32)m | (UInt32)n;
else if (n is UInt64)
return (UInt64)m | (UInt64)n;
else if (n is Byte)
return (Byte)m | (Byte)n;
#if NET_2_0
else if (n is SByte)
{
if (SystemUtils.MonoRuntime)
{
SByte x = (sbyte) n;
SByte y = (sbyte) m;
int result = (int) x | (int) y;
return SByte.Parse(result.ToString());
}
return (SByte) ((SByte) m | (SByte) n);
}
#endif
throw new ArgumentException(string.Format("'{0}' and/or '{1}' are not one of the supported integral types.", m, n));
}
/// <summary>
/// Bitwise XORs (^) the specified integral values.
/// </summary>
/// <param name="m">The first number.</param>
/// <param name="n">The second number.</param>
/// <exception cref="System.ArgumentException">
/// If one of the supplied arguments is not a supported integral types.
/// </exception>
public static object BitwiseXor(object m, object n)
{
CoerceTypes(ref m, ref n);
if (n is bool)
return (bool)m ^ (bool)n;
else if (n is Int32)
return (Int32)m ^ (Int32)n;
else if (n is Int16)
return (Int16)m ^ (Int16)n;
else if (n is Int64)
return (Int64)m ^ (Int64)n;
else if (n is UInt16)
return (UInt16)m ^ (UInt16)n;
else if (n is UInt32)
return (UInt32)m ^ (UInt32)n;
else if (n is UInt64)
return (UInt64)m ^ (UInt64)n;
else if (n is Byte)
return (Byte)m ^ (Byte)n;
else if (n is SByte)
return (SByte)m ^ (SByte)n;
else
{
throw new ArgumentException(string.Format("'{0}' and/or '{1}' are not one of the supported integral types.", m, n));
}
}
/// <summary>
/// Adds the specified numbers.
/// </summary>
/// <param name="m">The first number.</param>
/// <param name="n">The second number.</param>
public static object Add(object m, object n)
{
CoerceTypes(ref m, ref n);
if (n is Int32)
return (Int32)m + (Int32)n;
else if (n is Int16)
return (Int16)m + (Int16)n;
else if (n is Int64)
return (Int64)m + (Int64)n;
else if (n is UInt16)
return (UInt16)m + (UInt16)n;
else if (n is UInt32)
return (UInt32)m + (UInt32)n;
else if (n is UInt64)
return (UInt64)m + (UInt64)n;
else if (n is Byte)
return (Byte)m + (Byte)n;
else if (n is SByte)
return (SByte)m + (SByte)n;
else if (n is Single)
return (Single)m + (Single)n;
else if (n is Double)
return (Double)m + (Double)n;
else if (n is Decimal)
return (Decimal)m + (Decimal)n;
else
{
throw new ArgumentException(string.Format("'{0}' and/or '{1}' are not one of the supported numeric types.", m, n));
}
}
/// <summary>
/// Subtracts the specified numbers.
/// </summary>
/// <param name="m">The first number.</param>
/// <param name="n">The second number.</param>
public static object Subtract(object m, object n)
{
CoerceTypes(ref m, ref n);
if (n is Int32)
return (Int32)m - (Int32)n;
else if (n is Int16)
return (Int16)m - (Int16)n;
else if (n is Int64)
return (Int64)m - (Int64)n;
else if (n is UInt16)
return (UInt16)m - (UInt16)n;
else if (n is UInt32)
return (UInt32)m - (UInt32)n;
else if (n is UInt64)
return (UInt64)m - (UInt64)n;
else if (n is Byte)
return (Byte)m - (Byte)n;
else if (n is SByte)
return (SByte)m - (SByte)n;
else if (n is Single)
return (Single)m - (Single)n;
else if (n is Double)
return (Double)m - (Double)n;
else if (n is Decimal)
return (Decimal)m - (Decimal)n;
else
{
throw new ArgumentException(string.Format("'{0}' and/or '{1}' are not one of the supported numeric types.", m, n));
}
}
/// <summary>
/// Multiplies the specified numbers.
/// </summary>
/// <param name="m">The first number.</param>
/// <param name="n">The second number.</param>
public static object Multiply(object m, object n)
{
CoerceTypes(ref m, ref n);
if (n is Int32)
return (Int32)m * (Int32)n;
else if (n is Int16)
return (Int16)m * (Int16)n;
else if (n is Int64)
return (Int64)m * (Int64)n;
else if (n is UInt16)
return (UInt16)m * (UInt16)n;
else if (n is UInt32)
return (UInt32)m * (UInt32)n;
else if (n is UInt64)
return (UInt64)m * (UInt64)n;
else if (n is Byte)
return (Byte)m * (Byte)n;
else if (n is SByte)
return (SByte)m * (SByte)n;
else if (n is Single)
return (Single)m * (Single)n;
else if (n is Double)
return (Double)m * (Double)n;
else if (n is Decimal)
return (Decimal)m * (Decimal)n;
else
{
throw new ArgumentException(string.Format("'{0}' and/or '{1}' are not one of the supported numeric types.", m, n));
}
}
/// <summary>
/// Divides the specified numbers.
/// </summary>
/// <param name="m">The first number.</param>
/// <param name="n">The second number.</param>
public static object Divide(object m, object n)
{
CoerceTypes(ref m, ref n);
if (n is Int32)
return (Int32)m / (Int32)n;
else if (n is Int16)
return (Int16)m / (Int16)n;
else if (n is Int64)
return (Int64)m / (Int64)n;
else if (n is UInt16)
return (UInt16)m / (UInt16)n;
else if (n is UInt32)
return (UInt32)m / (UInt32)n;
else if (n is UInt64)
return (UInt64)m / (UInt64)n;
else if (n is Byte)
return (Byte)m / (Byte)n;
else if (n is SByte)
return (SByte)m / (SByte)n;
else if (n is Single)
return (Single)m / (Single)n;
else if (n is Double)
return (Double)m / (Double)n;
else if (n is Decimal)
return (Decimal)m / (Decimal)n;
else
{
throw new ArgumentException(string.Format("'{0}' and/or '{1}' are not one of the supported numeric types.", m, n));
}
}
/// <summary>
/// Calculates remainder for the specified numbers.
/// </summary>
/// <param name="m">The first number (dividend).</param>
/// <param name="n">The second number (divisor).</param>
public static object Modulus(object m, object n)
{
CoerceTypes(ref m, ref n);
if (n is Int32)
return (Int32)m % (Int32)n;
else if (n is Int16)
return (Int16)m % (Int16)n;
else if (n is Int64)
return (Int64)m % (Int64)n;
else if (n is UInt16)
return (UInt16)m % (UInt16)n;
else if (n is UInt32)
return (UInt32)m % (UInt32)n;
else if (n is UInt64)
return (UInt64)m % (UInt64)n;
else if (n is Byte)
return (Byte)m % (Byte)n;
else if (n is SByte)
return (SByte)m % (SByte)n;
else if (n is Single)
return (Single)m % (Single)n;
else if (n is Double)
return (Double)m % (Double)n;
else if (n is Decimal)
return (Decimal)m % (Decimal)n;
else
{
throw new ArgumentException(string.Format("'{0}' and/or '{1}' are not one of the supported numeric types.", m, n));
}
}
/// <summary>
/// Raises first number to the power of the second one.
/// </summary>
/// <param name="m">The first number.</param>
/// <param name="n">The second number.</param>
public static object Power(object m, object n)
{
return Math.Pow(Convert.ToDouble(m), Convert.ToDouble(n));
}
/// <summary>
/// Coerces the types so they can be compared.
/// </summary>
/// <param name="m">The right.</param>
/// <param name="n">The left.</param>
public static void CoerceTypes(ref object m, ref object n)
{
TypeCode leftTypeCode = Convert.GetTypeCode(m);
TypeCode rightTypeCode = Convert.GetTypeCode(n);
if (leftTypeCode > rightTypeCode)
{
n = Convert.ChangeType(n, leftTypeCode);
}
else
{
m = Convert.ChangeType(m, rightTypeCode);
}
}
#region Constructor (s) / Destructor
// CLOVER:OFF
/// <summary>
/// Creates a new instance of the <see cref="Spring.Util.NumberUtils"/> class.
/// </summary>
/// <remarks>
/// <p>
/// This is a utility class, and as such exposes no public constructors.
/// </p>
/// </remarks>
private NumberUtils()
{
}
// CLOVER:ON
#endregion
}
}
Numeric Parsing Demo
using System;
public class NumericParsing
{
public static void Main()
{
int value = Int32.Parse("99953");
double dval = Double.Parse("1.3433E+35");
Console.WriteLine("{0}", value);
Console.WriteLine("{0}", dval);
}
}
shows that using an instance of the System.Int32 stucture is the same as using the int keyword
/*
C# Programming Tips & Techniques
by Charles Wright, Kris Jamsa
Publisher: Osborne/McGraw-Hill (December 28, 2001)
ISBN: 0072193794
*/
//
// TestInt.cs -- shows that using an instance of the System.Int32 stucture
// is the same as using the int keyword.
//
// Compile this program with the following command line:
// C:>csc TestInt.cs
//
namespace nsTestInt
{
using System;
public class TestInt
{
static public void Main ()
{
System.Int32 x;
OutInt (out x);
Console.WriteLine ("The integer is " + x);
x = 42;
ShowInt (x);
ChangeInt (ref x);
Console.WriteLine ("The integer is " + x);
}
static void OutInt (out int val)
{
val = 42;
}
static void ShowInt (int val)
{
Console.WriteLine ("The value passed is " + val.ToString());
}
static void ChangeInt (ref System.Int32 val)
{
val *= 2;
}
}
}
Use int variable
/*
Mastering Visual C# .NET
by Jason Price, Mike Gunderloy
Publisher: Sybex;
ISBN: 0782129110
*/
public class Example2_1
{
public static void Main()
{
int count = 1;
System.Console.WriteLine("count = " + count);
}
}