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Simple explanation of MapReduce?
...you want them summed up, you'd write a loop like this
A = [7, 8, 9]
sum = 0
foreach (item in A) sum = sum + A[item]
But, if you have access to a reduce function, you could write it like this
A = [7, 8, 9]
sum = A.reduce( 0, (x, y) => x + y )
Now it's a little confusing why there are 2 argum...
JQuery to check for duplicate ids in a DOM
...{
var ids = $('[id="'+this.id+'"]');
if(ids.length>1 && ids[0]==this)
console.warn('Multiple IDs #'+this.id);
});
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How do you connect to multiple MySQL databases on a single webpage?
... : mysql_xx functions are deprecated since php 5.5 and removed since php 7.0 (see http://php.net/manual/intro.mysql.php), use mysqli_xx functions or see the answer below from @Troelskn
You can make multiple calls to mysql_connect(), but if the parameters are the same you need to pass true for the...
How to remove trailing whitespaces with sed?
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10 Answers
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How can I disable logging of asset pipeline (sprockets) messages in Ruby on Rails 3.1?
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edited Jun 1 at 15:10
Peter Mortensen
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Batch: Remove file extension
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edited Jan 30 at 10:07
answered Jul 9 '10 at 18:35
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How can you tell when a layout has been drawn?
...e Layout has not been drawn yet, and so layout.getMeasuredHeight() returns 0.
8 Answers
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Why are arrays of references illegal?
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answered Jul 22 '09 at 10:19
Kirill V. LyadvinskyKirill V. Lyadvinsky
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How to center an element horizontally and vertically
...ll Screen Example
In supported browsers (most of them), you can use top: 50%/left: 50% in combination with translateX(-50%) translateY(-50%) to dynamically vertically/horizontally center the element.
.container {
position: absolute;
top: 50%;
left: 50%;
-moz-transform: tr...
How to set the first option on a select box using jQuery?
...E/898/
$('#name2').change(function(){
$('#name').prop('selectedIndex',0);
});
$('#name').change(function(){
$('#name2').prop('selectedIndex',0);
});
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