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How many concurrent AJAX (XmlHttpRequest) requests are allowed in popular browsers?
... 6
var change = 0;
var simultanius = 0;
var que = 20; // number of tests
Array(que).join(0).split(0).forEach(function(a,i){
var xhr = new XMLHttpRequest;
xhr.open("GET", "/?"+i); // cacheBust
xhr.onreadystatechange = function() {
if(xhr.readyState == 2){
change++;
...
Are PHP functions case sensitive?
I was digging through some code, and I found some calls to mySQL_fetch_array . Is PHP case sensitive about function names? I recall reading this somewhere but can't seem to find any reference to it.
...
How to change MySQL data directory?
...dard install of Centos 7 OS with RAID 10 with 8x HDD but usually such disk array details are transparent to software.
– Volksman
May 12 at 23:36
...
Difference between id and name attributes in HTML
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Name tag for fields - This is unique per form -- unless you are doing an array which you want to pass to PHP/server-side processing. You can access it via Javascript by name, but I think that it does not appear as a node in the DOM or some restrictions may apply (you cannot use .innerHTML, for exa...
How can I include a YAML file inside another?
...nserted inside B, either spliced into the existing data structure, like an array, or as a child of an element, like the value for a certain hash key.
...
What are the differences between JSON and JSONP?
...om any language or database, that is representable as name-value pairs and arrays. And additional conventions are required to accurately round-trip any JS object - see JSON: Unsupported native data types. Notably, JS Date comes back at far end as a string. weblog.west-wind.com/posts/2014/jan/06/…
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Check if all elements in a list are identical
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Don't forget memory usage analysis for very large arrays, a native solution which optimizes away calls to obj.__eq__ when lhs is rhs, and out-of-order optimizations to allow short circuiting sorted lists more quickly.
– Glenn Maynard
Oc...
What do the plus and minus signs mean in Objective-C next to a method?
... for an instance method.
E.g.
// Not actually Apple's code.
@interface NSArray : NSObject {
}
+ (NSArray *)array;
- (id)objectAtIndex:(NSUInteger)index;
@end
// somewhere else:
id myArray = [NSArray array]; // see how the message is sent to NSArray?
id obj = [myArray objectAtIndex:4]; ...
In Python, how do I iterate over a dictionary in sorted key order?
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@frank -- Short Answer: No. A dict is an array with the actual key being a hash of the value of the supplied key. Although some implementations may be fairly predictable, and some may even make this contract, I count on nothing when it comes to hash ordering. See th...
How to save a PNG image server-side, from a base64 data string
...',') + 1);
$type = strtolower($type[1]); // jpg, png, gif
if (!in_array($type, [ 'jpg', 'jpeg', 'gif', 'png' ])) {
throw new \Exception('invalid image type');
}
$data = str_replace( ' ', '+', $data );
$data = base64_decode($data);
if ($data === false) {
thro...