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Why would a JavaScript variable start with a dollar sign? [duplicate]
...wish the jquery documentation used this notation as well... It is indeed really helpful.
– pedromanoel
Jan 28 '14 at 11:05
10
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(How) can I count the items in an enum?
...4, but the integer values of the enum values would be way out of the array index range. Using enum values for array indexing is not safe, you should consider other options.
edit: as requested, made the special entry stick out more.
...
Get all attributes of an element using jQuery
... $node ) {
var attrs = {};
$.each( $node[0].attributes, function ( index, attribute ) {
attrs[attribute.name] = attribute.value;
} );
return attrs;
}
Underscore
Also works for lodash.
function getAttributes ( node ) {
return _.reduce( node.attributes, function ( attr...
What is unit testing and how do you do it? [duplicate]
... site is a good introduction to the what and the how
http://www.nunit.org/index.php?p=quickStart&r=2.5
Is everything testable? Generally if it calculates something then yes. UI code is a whole other problem to deal with though, as simulating users clicking on buttons is tricky.
What should yo...
How to cancel/abort jQuery AJAX request?
...ct
return $def.promise();
}
// initiate first call
singleAjax('/ajax.php', {a: 1, b: 2})
.always(function(a,b,c) {console && console.log(a,b,c);});
// second call kills first one
singleAjax('/ajax.php', {a: 1, b: 2})
.always(function(a,b,c) {console && console.log(a,b,...
Ruby: How to turn a hash into HTTP parameters?
...127.0.0.1 at 2011-03-10 11:19:40 -0600 Processing by SitesController#index as HTML Parameters: {"a"=>"a", "b"=>["c", "d", "e"]}
– Gabe Martin-Dempesy
Mar 10 '11 at 17:21
...
Overriding class constants vs properties
... and always refers to the class it is being executed in. If you are using php5.3+ you might try static::TEST as static:: is inheritance-aware.
The difference is that static:: uses "late static binding". Find more information here:
http://php.net/manual/en/language.oop5.late-static-bindings.php
...
Equals(=) vs. LIKE
...ne of 3 million rows and one of 10 thousand rows.
When using a like on an index as below(no wildcards), it took about 30 seconds:
where login like '12345678'
using 'explain' I get:
When using an '=' on the same query, it took about 0.1 seconds:
where login ='12345678'
Using 'explain' I g...
Create a pointer to two-dimensional array
...e array, you cannot do as a shortcut
matrix_ptr[0][0][1] = ...;
Because indexing requires the element type's size to be known (indexing implies an addition of an integer to the pointer, so it won't work with incomplete types). Note that this only works in C, because T[] and T[N] are compatible ty...
In MySQL, how to copy the content of one table to another table within the same database?
...
+1 - although the new table won't have the index definitions from the first. The "create ... like ..." approach will copy index definitions too.
– Martin
Feb 28 '10 at 12:16
...