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How do you connect to multiple MySQL databases on a single webpage?
...b->prepare("select * from tablename where id = :id");
$stmt->execute(array(':id' => 42));
$row = $stmt->fetch();
If you need multiple connections open at once, you can simply create multiple instances of PDO:
try {
$db1 = new PDO('mysql:dbname=databas1;host=127.0.0.1', 'username', '...
Why doesn't await on Task.WhenAll throw an AggregateException?
...ion to be unwrapped, but all exceptions are indeed still available via the array of Tasks.
– nuclearpidgeon
Jan 2 '19 at 1:18
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Check if a string is a date value
...SO_8601, true).isValid(); // true
And you can use multiple formats as an array:
var formats = [
moment.ISO_8601,
"MM/DD/YYYY :) HH*mm*ss"
];
moment("2015-06-22T13:17:21+0000", formats, true).isValid(); // true
moment("06/22/2015 :) 13*17*21", formats, true).isValid(); // true
moment("...
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++;
...
What does the 'L' in front a string mean in C++?
...
It means it's an array of wide characters (wchar_t) instead of narrow characters (char).
It's a just a string of a different kind of character, not necessarily a Unicode string.
...
Local file access with JavaScript
...e, file size, MIME type, and a reference to the file handle.
FileList - an array-like sequence of File objects. (Think <input type="file" multiple> or dragging a directory of files from the desktop).
Blob - Allows for slicing a file into byte ranges.
See Paul D. Waite's comment below.
...
Best way of returning a random boolean value
...
A declarative snippet using Array#sample:
random_boolean = [true, false].sample
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How to call C from Swift?
...ingMemoryBound(to: UInt8.self), count: numberBytesRead)
let results = Array<UInt8>(unsafeBufferPointer)
free(unsafeMutableRawPointer)
return results
}
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How can I get selector from jQuery object
... BODY > DIV#main'
// If there are multiple matches then an array will be returned
$('body > div').getSelector(); // => ['HTML > BODY > DIV#main', 'HTML > BODY > DIV#sidebar']
// Passing true to the method will cause it to return the sel...
Is there any reason for using WebGL instead of 2D Canvas for 2D games/apps?
...API, the Canvas 2D API itself doesn't offer programmable shaders or vertex array buffers. It's a "chatty" API (one JavaScript-to-Native call per element drawn), whereas WebGL's API allows bulk data loading and GPU-based custom processing.
– emackey
Oct 30 '17 ...