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Array.sort() doesn't sort numbers correctly [duplicate]
...ript:
https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/sort
array.sort([compareFunction])
Parameters
compareFunction
Specifies a function that defines the sort order. If omitted, the array is sorted lexicographically (in dictionary order) according to the string conversio...
Get value from SimpleXMLElement Object
...
For me its easier to use arrays than objects,
So, I convert an Xml-Object,
$xml = simplexml_load_file('xml_file.xml');
$json_string = json_encode($xml);
$result_array = json_decode($json_string, TRUE);
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Should one use < or
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Remember, if you loop on an array's Length using <, the JIT optimizes array access (removes bound checks). So it should be faster that using <=. I haven't checked it though
– configurator
Jan 15 '10 at 5:36
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Understanding FFT output
... imaginative part of a complex number (that what's your real and imaginary array is). Instead you want to look for the magnitude of the frequency which is defined as sqrt (real * real + imag * imag). This number will always be positive. Now all you have to search is for the maximum value (ignore the...
Cartesian product of multiple arrays in JavaScript
How would you implement the Cartesian product of multiple arrays in JavaScript?
30 Answers
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What's the fastest way to loop through an array in JavaScript?
...y obvious).
A standard for-loop with length caching
var i = 0, len = myArray.length;
while (i < len) {
// your code
i++
}
I would say, this is definitely a case where I applaud JavaScript engine developers. A runtime should be optimized for clarity, not cleverness.
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Finding duplicates in O(n) time and O(1) space
Input: Given an array of n elements which contains elements from 0 to n-1, with any of these numbers appearing any number of times.
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In C, do braces act as a stack frame?
...ther auxiliary storage location, or be optimized away entirely.
So, the d array, in theory, could consume memory for the entire function. However, the compiler may optimize it away, or share its memory with other local variables whose usage lifetimes do not overlap.
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JavaScript, Node.js: is Array.forEach asynchronous?
I have a question regarding the native Array.forEach implementation of JavaScript: Does it behave asynchronously?
For example, if I call:
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“var” or no “var” in JavaScript's “for-in” loop?
...bsolutely sure that that's what you want to do. For iterating through real arrays (which is pretty common), you should always use a loop with a numeric index:
for (var i = 0; i < array.length; ++i) {
var element = array[i];
// ...
}
Iterating through a plain array with "for ... in" can hav...