using System; public class MainClass { public static void Main() { double d = 2.9; Console.WriteLine((int)d); // double-->int; prints 2 Console.WriteLine((int)(-d)); // double-->int; prints -2 uint seconds = (uint)(24 * 60 * 60); // int-->uint double avgSecPerYear = 365.25 * seconds; // I uint-->double float f = seconds; // IL uint-->float long nationalDebt1 = 99999999999999; double perSecond = 99999.14; decimal perDay = seconds * (decimal)perSecond; // I uint-->decimal double nd2 = nationalDebt1 + (double)perDay; // decimal-->double long nd3 = (long)nd2; // double-->long float nd4 = (float)nd2; // double-->float } }
Software Development
software development notes, main category for Cs, Java, and other programming experiences.
Type convert
/* Type Can Safely Be Converted To Byte short, ushort, int, uint, long, ulong, float, double, decimal Sbyte short, int, long, float, double, decimal Short int, long, float, double, decimal Ushort int, uint, long, ulong, float, double, decimal Int long, float, double, decimal Uint long, ulong, float, double, decimal Long float, double, decimal Ulong float, double, decimal Float double Char ushort, int, uint, long, ulong, float, double, decimal */
Byte array Index Of
//GNU General Public License version 2 (GPLv2)
//http://walkmen.codeplex.com/license
using System;
using System.Collections.Generic;
using System.Text;
namespace Walkmen.Util
{
public sealed class ByteUtils
{
private ByteUtils()
{
}
public static int IndexOf(byte[] array, byte[] pattern, int offset)
{
int success = 0;
for (int i = offset; i < array.Length; i++)
{
if (array[i] == pattern[success])
{
success++;
}
else
{
success = 0;
}
if (pattern.Length == success)
{
return i - pattern.Length + 1;
}
}
return -1;
}
}
}
[/csharp]
Write int 32 to byte array
//http://walkmen.codeplex.com/license // License: GNU General Public License version 2 (GPLv2) using System; using System.Collections.Generic; using System.Text; namespace Walkmen.Util { public sealed class NumericUtils { private NumericUtils() { } public static byte[] WriteInt32(int value) { byte[] result = new byte[4]; result[0] = (byte)((value & 0xFF000000) >> 24); result[1] = (byte)((value & 0x00FF0000) >> 16); result[2] = (byte)((value & 0x0000FF00) >> 8); result[3] = (byte)((value & 0x000000FF)); return result; } } }
Read int 32 from byte array
//http://walkmen.codeplex.com/license
// License: GNU General Public License version 2 (GPLv2)
using System;
using System.Collections.Generic;
using System.Text;
namespace Walkmen.Util
{
public sealed class NumericUtils
{
private NumericUtils()
{
}
public static int ReadInt32(byte[] buffer, int offset)
{
return (buffer[offset + 0] << 24) + (buffer[offset + 1] << 16) + (buffer[offset + 2] << 8) + (buffer[offset + 3]);
}
}
}
[/csharp]
Read Int 24 from byte array
//http://walkmen.codeplex.com/license
// License: GNU General Public License version 2 (GPLv2)
using System;
using System.Collections.Generic;
using System.Text;
namespace Walkmen.Util
{
public sealed class NumericUtils
{
private NumericUtils()
{
}
public static int ReadInt24(byte[] buffer, int offset)
{
return (buffer[offset + 0] << 16) + (buffer[offset + 1] << 8) + (buffer[offset + 2]);
}
}
}
[/csharp]
Write short value to byte array
//http://walkmen.codeplex.com/license // License: GNU General Public License version 2 (GPLv2) using System; using System.Collections.Generic; using System.Text; namespace Walkmen.Util { public sealed class NumericUtils { private NumericUtils() { } public static byte[] WriteShort(short value) { byte[] result = new byte[2]; result[0] = (byte)((value & 0xFF00) >> 8); result[1] = (byte)((value & 0x00FF)); return result; } } }