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What's the difference between VARCHAR and CHAR?
...xed-width. MySQL gains advantage calculating the space requirements and offset of rows in that kind of table.
– Marco Demaio
Oct 17 '17 at 16:42
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How do I select an element in jQuery by using a variable for the ID?
...(and HTML compliant as per Paolo's answer), especially if you have another set of data that needs to be named as well.
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How do I turn off the unlimited whitespace in IntelliJ editor?
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File menu -> Settings -> Editor -> General -> Virtual Space and uncheck 'Allow placement of caret after end of line' . You may also uncheck the other options in the Virtual Space panel.
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JavaScript closure inside loops – simple practical example
...ning values (DOM references, objects, whatever), and the problem arises of setting up callbacks specific to each element, you can do this:
var someArray = [ /* whatever */ ];
// ...
someArray.forEach(function(arrayElement) {
// ... code code code for this one element
someAsynchronousFunction(arr...
How to find whether or not a variable is empty in Bash
...fic situation not directly mentioned in the question: if the variable is unset and the set -u option has been activated, this test will fail with unbound variable. In this case, you might prefer @alexli's solution.
– anol
May 26 '15 at 16:34
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Redirect Windows cmd stdout and stderr to a single file
...igbgotiz 2>&1 means 'redirect stream 2 to stream 1'. So you need to set up stream 1 first
– FrinkTheBrave
Aug 4 '14 at 8:31
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Quickly create a large file on a Linux system
How can I quickly create a large file on a Linux ( Red Hat Linux ) system?
14 Answers
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What are best practices for validating email addresses on iOS 2.0
...o validate an email address explains in great detail that the grammar specified in RFC 5322 is too complicated for primitive regular expressions.
I recommend a real parser approach like MKEmailAddress.
As quick regular expressions solution see this modification of DHValidation:
- (BOOL) validat...
Detect Click into Iframe using JavaScript
...this keeps overiFrame at -1 when no iFrames are hovered, or the 'bannerid' set in the wrapping div when an iframe is hovered. All you have to do is check if 'overiFrame' is set when the window blurs, like so:
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$(window).blur( function() {
if( overiFrame != -1 )
$.post('lo...
How to create an instance of anonymous class of abstract class in Kotlin?
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