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What is the difference between concurrency, parallelism and asynchronous methods?
...to do work away from the current application and we don't want to wait and block our application awaiting the response.
For example, getting data from a database could take time but we don't want to block our UI waiting for the data. The async call takes a call-back reference and returns execution...
JavaScript, Node.js: is Array.forEach asynchronous?
...
No, it is blocking. Have a look at the specification of the algorithm.
However a maybe easier to understand implementation is given on MDN:
if (!Array.prototype.forEach)
{
Array.prototype.forEach = function(fun /*, thisp */)
{
...
Replace input type=file by an image
...ame type of data as the input file ones do? I do not want to retest all my PHP done in the submit page. Cheers.
– Nicolas
May 18 '10 at 8:43
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Centering the pagination in bootstrap
...:
.pagination {text-align: center;}
It works because ul is using inline-block;
Fiddle: http://jsfiddle.net/praveenscience/5L8fu/
Or if you would like to use Bootstrap's class:
<div class="pagination pagination-centered">
<ul>
<li><a href="?p=0" data-original-...
Base64 length calculation?
...return (x + y - 1) / y;
}
public static int paddedBase64(int n) {
int blocks = ceilDiv(n, 3);
return blocks * 4;
}
public static int unpaddedBase64(int n) {
int bits = 8 * n;
return ceilDiv(bits, 6);
}
// test only
public static void main(String[] args) {
for (int n = 0; n <...
How to get CRON to call in the correct PATHs
...vironment Variables
0 9 * * * cd /var/www/vhosts/foo/crons/; bash -l -c 'php -f ./download.php'
0 9 * * * cd /var/www/vhosts/foo/crons/; bash -l -c download.sh
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Can you add new statements to Python's syntax?
...ntil:
static int
compiler_until(struct compiler *c, stmt_ty s)
{
basicblock *loop, *end, *anchor = NULL;
int constant = expr_constant(s->v.Until.test);
if (constant == 1) {
return 1;
}
loop = compiler_new_block(c);
end = compiler_new_block(c);
if (constant ==...
Handling specific errors in JavaScript (think exceptions)
...sdn: "You included a throw statement, but it was not enclosed within a try block, or there was no associated catch block to trap the error. Exceptions are thrown from within the try block using the throw statement, and caught outside the try block with a catch statement."
– Eug...
XPath: select text node
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Does this work in PHP? I'm trying to loop through only text nodes, even those in-between a set of tags. The problem is that is smashing the content of multiple text nodes together, regardless of tags. Using //*[text()] anyway. /html/text() doe...
Wait until file is unlocked in .NET
What's the simplest way of blocking a thread until a file has been unlocked and is accessible for reading and renaming? For example, is there a WaitOnFile() somewhere in the .NET Framework?
...