Show Hexadecimal Numbers Of a File
Use the od command, od -t x1 filename
hex
Converting some hexadecimal string to a decimal integer
It looks like there’s an extra (leading) space character in your string (” 100a”). You can use trim() to remove leading and trailing whitespaces: temp1 = Integer.parseInt(display.getText().trim(), 16); Or if you think the presence of a space means there’s something else wrong, you’ll have to look into it yourself, since we don’t have the rest … Read more
How does hexadecimal color work?
Hexadecimal uses sixteen distinct symbols, in the case of css color the symbols 0–9 to represent values zero to nine (obviously), and A, B, C, D, E, F to represent values ten to fifteen. So, using one Hexadecimal character you can represent 16 values. With two Hexadecimal you can represent 256 (16*16) values. In RGB you have colours represented by … Read more
Oracle: How do I convert hex to decimal in Oracle SQL?
If you are using 8.1.5 and above you can use: To convert from hexadecimal to decimal: select to_number(‘AA’, ‘xx’) from dual; To convert from decimal to hexadecimal: select to_char(111, ‘xxxx’) from dual;
Convert RGBA to HEX
Since alpha value both attenuates the background color and the color value, something like this could do the trick: function rgba2rgb(RGB_background, RGBA_color) { var alpha = RGBA_color.a; return new Color( (1 – alpha) * RGB_background.r + alpha * RGBA_color.r, (1 – alpha) * RGB_background.g + alpha * RGBA_color.g, (1 – alpha) * RGB_background.b + alpha … Read more
Swift 5.4 hex to NSColor
you could try something like this: EDIT: included toHex(alpha:), from code I probably got from the net somewhere many years ago. EDIT3,4: included the case for #RRGGBBAA EDIT 5: stripping blank spaces in the hex string, to make NSColor (hex:” # 2196f380 “) work as well. extension NSColor { convenience init(hex: String) { let trimHex … Read more
How to convert a hexadecimal string to a binary string in C
It’s quite easy, really, because the translation goes digit-by-digit. 0 – 0000 1 – 0001 2 – 0010 3 – 0011 4 – 0100 5 – 0101 6 – 0110 7 – 0111 8 – 1000 9 – 1001 A – 1010 B – 1011 C – 1100 D – 1101 E – 1110 F … Read more
How to convert hex number to bin in Swift?
You can use NSScanner() from the Foundation framework: let scanner = NSScanner(string: str) var result : UInt32 = 0 if scanner.scanHexInt(&result) { println(result) // 37331519 } Or the BSD library function strtoul() let num = strtoul(str, nil, 16) println(num) // 37331519 As of Swift 2 (Xcode 7), all integer types have an public init?(_ text: … Read more
Why is Java able to store 0xff000000 as an int?
Just an addition to erickson’s answer: As he said, signed integers are stored as two’s complements to their respective positive value on most computer architectures. That is, the whole 2^32 possible values are split up into two sets: one for positive values starting with a 0-bit and one for negative values starting with a 1. … Read more
Verify if String is hexadecimal
Horrible abuse of exceptions. Don’t ever do this! (It’s not me, it’s Josh Bloch’s Effective Java). Anyway, I suggest private static final Pattern HEXADECIMAL_PATTERN = Pattern.compile(“\\p{XDigit}+”); private boolean isHexadecimal(String input) { final Matcher matcher = HEXADECIMAL_PATTERN.matcher(input); return matcher.matches(); }