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What is the difference between syntax and semantics in programming languages?
What is the difference between syntax and semantics in programming languages (like C, C++)?
10 Answers
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Select every Nth element in CSS
...ddition to constant numbers. You can perform addition (+), subtraction (-) and coefficient multiplication (an where a is an integer, including positive numbers, negative numbers and zero).
Here's how you would rewrite the above selector list:
div:nth-child(4n)
For an explanation on how these ari...
Change Twitter Bootstrap Tooltip content on click
...ce code. So $.tooltip(string) calls any function within the Tooltip class. And if you look at Tooltip.fixTitle, it fetches the data-original-title attribute and replaces the title value with it.
So we simply do:
$(element).tooltip('hide')
.attr('data-original-title', newValue)
...
What's the difference between an exclusive lock and a shared lock?
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I wrote this answer down because I thought this would be a fun (and fitting) analogy:
Think of a lockable object as a blackboard (lockable) in a class room containing a teacher (writer) and many students (readers).
While a teacher is writing something (exclusive lock) on the board:
No...
NSUserDefaults - How to tell if a key exists
I'm working on a small iPhone app, and I am using NSUserDefaults as my data persistence. It only has to keep track of a few things, such as some names and some numbers so I figure I might as well keep it simple.
...
Custom UITableViewCell from nib in Swift
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With Swift 5 and iOS 12.2, you should try the following code in order to solve your problem:
CustomCell.swift
import UIKit
class CustomCell: UITableViewCell {
// Link those IBOutlets with the UILabels in your .XIB file
@IBOutl...
How to create hyperlink to call phone number on mobile devices?
...ng prefix, also known as "exit code". This code varies by region, country, and sometimes a single country can use multiple codes, depending on the carrier. Fortunately, when it is a local call, dialing it with the international format will still work.
Using your example number, when calling from Ch...
Format number to always show 2 decimal places
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@Kooilnc: OP wants 1 to display as 1.00, and 1.341 to display as 1.34.
– drudge
May 26 '11 at 16:59
54
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How to terminate the script in JavaScript?
... function (e) {e.preventDefault();e.stopPropagation();}, false);
var handlers = [
'copy', 'cut', 'paste',
'beforeunload', 'blur', 'change', 'click', 'contextmenu', 'dblclick', 'focus', 'keydown', 'keypress', 'keyup', 'mousedown', 'mousemove', 'mouseout', 'mouseover', 'mouseup', ...
How to disable XDebug
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Find your php.ini and look for XDebug.
Set xdebug autostart to false
xdebug.remote_autostart=0
xdebug.remote_enable=0
Disable your profiler
xdebug.profiler_enable=0
Note that there can be a performance loss even with xdebug disabled b...