You can give to_s a base other than 10: 10.to_s(16) #=> “a” Note that in ruby 2.4 FixNum and BigNum were unified in the Integer class. If you are using an older ruby check the documentation of FixNum#to_s and BigNum#to_s
xxd -p file Or if you want it all on a single line: xxd -p file | tr -d ‘\n’
Android uses hexadecimal ARGB values, which are formatted as #AARRGGBB. That first pair of letters, the AA, represent the alpha channel. You must convert your decimal opacity values to a hexadecimal value. Here are the steps: Alpha Hex Value Process Take your opacity as a decimal value and multiply it by 255. So, if you … Read more
The mask makes sure you only get RRGGBB, and the %06X gives you zero-padded hex (always 6 chars long): String hexColor = String.format(“#%06X”, (0xFFFFFF & intColor));
The # part gives you a 0x in the output string. The 0 and the x count against your “8” characters listed in the 08 part. You need to ask for 10 characters if you want it to be the same. int i = 7; printf(“%#010x\n”, i); // gives 0x00000007 printf(“0x%08x\n”, i); // gives 0x00000007 … Read more
You are looking for the chr function. You seem to be mixing decimal representations of integers and hex representations of integers, so it’s not entirely clear what you need. Based on the description you gave, I think one of these snippets shows what you want. >>> chr(0x65) == ‘\x65’ True >>> hex(65) ‘0x41’ >>> chr(65) … Read more
Here’s a nice fun LINQ example. public static byte[] StringToByteArray(string hex) { return Enumerable.Range(0, hex.Length) .Where(x => x % 2 == 0) .Select(x => Convert.ToByte(hex.Substring(x, 2), 16)) .ToArray(); }
Since Python 3.5 this is finally no longer awkward: >>> b’\xde\xad\xbe\xef’.hex() ‘deadbeef’ and reverse: >>> bytes.fromhex(‘deadbeef’) b’\xde\xad\xbe\xef’ works also with the mutable bytearray type. Reference: https://docs.python.org/3/library/stdtypes.html#bytes.hex
Try Color class method: public static int parseColor (String colorString) From Android documentation: Supported formats are: #RRGGBB #AARRGGBB ‘red’, ‘blue’, ‘green’, ‘black’, ‘white’, ‘gray’, ‘cyan’, ‘magenta’, ‘yellow’, ‘lightgray’, ‘darkgray’ AndroidX: String.toColorInt()
There is a built in method for this: byte[] data = { 1, 2, 4, 8, 16, 32 }; string hex = BitConverter.ToString(data); Result: 01-02-04-08-10-20 If you want it without the dashes, just remove them: string hex = BitConverter.ToString(data).Replace(“-“, string.Empty); Result: 010204081020 If you want a more compact representation, you can use Base64: string base64 … Read more