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How does PHP 'foreach' actually work?
...es are not actually stored in this rather inefficient way. However, if you start iterating over an object, the packed representation that is normally used will be converted to a real dictionary. At that point, iteration of plain objects becomes very similar to iteration of arrays (which is why I'm n...
How can I know if a process is running?
... Also, you will get an InvalidOperationException if you did not invoke the Start() method or you invoked the close() method. I posted another Answer to account for these two situations.
– Aelphaeis
Jan 31 '14 at 14:52
...
Regular expression for matching latitude/longitude coordinates?
...?:\.[0-9]{1,10})?$
-? # accept negative values
^ # Start of string
[0-9]{1,3} # Match 1-3 digits (i. e. 0-999)
(?: # Try to match...
\. # a decimal point
[0-9]{1,10} # followed by one to 10 digits (i. e. 0-9999999999)
)? # ...optionally
$ ...
Drawing a connecting line between two elements [closed]
...ur_con = cur_ui_item.data('line');
connector.append(cur_con);
var start = cur_ui_item.position();
cur_con.attr('x1',start.left).attr('y1',start.top+1);
cur_con.attr('x2',start.left+1).attr('y2',start.top+1);
});
...
What is Node.js? [closed]
...ed exceptions will bring down the entire process, necessitating logic to restart failed workers (see cluster). Modules with buggy native code can hard-crash the process. Whenever a worker dies, any requests it was handling are dropped, so one buggy API can easily degrade service for other cohosted A...
Regex lookahead, lookbehind and atomic groups
...nsume any character - the matching for regex following them (if any), will start at the same cursor position.
Read regular-expression.info for more details.
Positive lookahead:
Syntax:
(?=REGEX_1)REGEX_2
Match only if REGEX_1 matches; after matching REGEX_1, the match is discarded and sea...
What is PostgreSQL explain telling me exactly?
...ECT (ie UPDATE, DELETE, and INSERT)". My biggest misunderstanding is what "startup" time means, and that's not explained anywhere in these ~30 slides.
– Mark E. Haase
Feb 19 '16 at 15:51
...
Android update activity UI from service
...w for my original answer - that pattern has worked well, but recently I've started using a different approach to Service/Activity communication:
Use a bound service which enables the Activity to get a direct
reference to the Service, thus allowing direct calls on it, rather
than using Intents.
Use...
How do I install ASP.NET MVC 5 in Visual Studio 2012?
...l Studio 2012 and Visual Studio 2012 Express for Web.
You can download and start using these features now.
The download link is to a Web Platform Installer that will allow you to start a new MVC5 project from VS2012.
share
...
What Does 'Then' Really Mean in CasperJS
...ple navigation scenario:
var casper = require('casper').create();
casper.start();
casper.then(function step1() {
this.echo('this is step one');
});
casper.then(function step2() {
this.echo('this is step two');
});
casper.thenOpen('http://google.com/', function step3() {
this.echo('t...