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Determine font color based on background color
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Javascript [ES2015]
const hexToLuma = (colour) => {
const hex = colour.replace(/#/, '');
const r = parseInt(hex.substr(0, 2), 16);
const g = parseInt(hex.substr(2, 2), 16);
const b = parseInt(hex.substr(4, 2), 16);
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Max length for client ip address [duplicate]
... to 32 bits of IPv4 addresses). They are usually written as 8 groups of 4 hex digits separated by colons: 2001:0db8:85a3:0000:0000:8a2e:0370:7334. 39 characters is appropriate to store IPv6 addresses in this format.
Edit: However, there is a caveat, see @Deepak's answer for details about IPv4-map...
Fatal error in launcher: Unable to create process using “”C:\Program Files (x86)\Python33\python.exe
...th in the executable pip.exe when it is installed.
Edit this file using a hex editor or WordPad (you have to save it as plain text then to retain binary data), change the path to Python with quotes and spaces like this:
#!"C:\Program Files (x86)\Python33\python.exe"
to an escaped path without sp...
Looking for ALT+LeftArrowKey solution in zsh
...b-tab and enter the following:
Move cursor one word left
⌥+← Send Hex Codes: 0x1b 0x62
Move cursor one word right
⌥+→ Send Hex Codes: 0x1b 0x66
And that should give you the desired behavior not just in ZSH, but also if you SSH into a server running BASH, irb/pry, node etc.
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How to use ADB to send touch events to device using sendevent command?
...s telling you that a key was pressed (button down) at position 2f5, 69e in hex which is 757 and 1694 in decimal.
If you now want to generate the same event, you can use the input tap command at the same position:
adb shell input tap 757 1694
More info can be found at:
https://source.android.com...
How do you Encrypt and Decrypt a PHP String?
...pat.
Unless you're using an AEAD construct, ALWAYS encrypt then MAC!
bin2hex(), base64_encode(), etc. may leak information about your encryption keys via cache timing. Avoid them if possible.
Even if you follow the advice given here, a lot can go wrong with cryptography. Always have a cryptograph...
What is the string length of a GUID?
...-1234-1234-123456789abc)
Guid.NewGuid().ToString("X") => 68 characters (Hexadecimal)
outputs: {0x12345678,0x1234,0x1234,{0x12,0x34,0x12,0x34,0x56,0x78,0x9a,0xbc}}
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How do I enter RGB values into Interface Builder?
How can I enter RGB or Hex color values for backgrounds in Interface Builder? I can select predefined colors but I would like to manually enter in RGB values. Where can I do this?
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What do numbers using 0x notation mean?
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Literals that start with 0x are hexadecimal integers. (base 16)
The number 0x6400 is 25600.
6 * 16^3 + 4 * 16^2 = 25600
For an example including letters (also used in hexadecimal notation where A = 10, B = 11 ... F = 15)
The number 0x6BF0 is 27632.
6 ...
Hexadecimal To Decimal in Shell Script
Can someone help me to convert a hexadecimal number to decimal number in a shell script?
6 Answers
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