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In Java, how do I convert a byte array to a string of hex digits while keeping leading zeros? [dupli

... 106 A simple approach would be to check how many digits are output by Integer.toHexString() and add...
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Best way to iterate through a Perl array

... answered May 7 '12 at 20:00 ikegamiikegami 308k1414 gold badges212212 silver badges451451 bronze badges ...
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Why can't I center with margin: 0 auto?

I have a #header div that is 100% width and within that div I have an unordered list. I have applied margin: 0 auto to the unordered list but it won't center it within the header div. ...
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PostgreSQL LIKE query performance variations

...to a particular table in my database. Sometimes I will get results within 200-400 ms (very acceptable) but other times it might take as much as 30 seconds to return results. ...
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RegEx - Match Numbers of Variable Length

... {[0-9]+:[0-9]+} try adding plus(es) share | improve this answer | follow | ...
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How to detect IE11?

...) { var ua = navigator.userAgent; var re = new RegExp("MSIE ([0-9]{1,}[\\.0-9]{0,})"); if (re.exec(ua) != null) rv = parseFloat( RegExp.$1 ); } else if (navigator.appName == 'Netscape') { var ua = navigator.userAgent; var re = new RegExp("Trident/.*rv:([0...
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How to create UILabel programmatically using Swift?

...wDidLoad() { super.viewDidLoad() var label = UILabel(frame: CGRectMake(0, 0, 200, 21)) label.center = CGPointMake(160, 284) label.textAlignment = NSTextAlignment.Center label.text = "I'm a test label" self.view.addSubview(label) } Swift 3.0+ Update: let label = UILabel(frame: CGRect...
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An example of how to use getopts in bash

... #!/bin/bash usage() { echo "Usage: $0 [-s <45|90>] [-p <string>]" 1>&2; exit 1; } while getopts ":s:p:" o; do case "${o}" in s) s=${OPTARG} ((s == 45 || s == 90)) || usage ;; p) ...
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How do I properly compare strings in C?

...ngs using != or ==, you need to use strcmp: while (strcmp(check,input) != 0) The reason for this is because != and == will only compare the base addresses of those strings. Not the contents of the strings themselves. shar...
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How can I test that a value is “greater than or equal to” in Jasmine?

I want to confirm that a value is a decimal (or 0), so the number should be greater than or equal to zero and less than 1. ...