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How do I remove objects from a JavaScript associative array?
...se Array#splice or Array#pop.
Note that the delete operator in JavaScript does not directly free memory. Its purpose is to remove properties from objects. Of course, if a property being deleted holds the only remaining reference to an object o, then o will subsequently be garbage collected in the n...
Identify user in a Bash script called by sudo
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$SUDO_USER doesn't work if you are using sudo su -.
It also requires multiple checks - if $USER == 'root' then get $SUDO_USER.
Instead of the command whoami use who am i. This runs the who command filtered for the current session. It...
How to round the corners of a button
... Just me or is the information in the answer incomplete? It doesn't really work. Update: it works as long as I do not specify borderColor. But then it always uses black for the borderColor.
– Jonny
Jan 17 '16 at 13:34
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How to implement a binary tree?
...mplementation. I'm just here to point out some style stuff. python usually does node is not None instead of your (node!=None). Also, you can use the __str__ function instead of the printTree method.
– Jeff Mandell
Oct 18 '15 at 2:30
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JavaScript closures vs. anonymous functions
...e closure F.
Now let's use this to figure out who uses closures and who doesn't (for the sake of explanation I have named the functions):
Case 1: Your Friend's Program
for (var i = 0; i < 10; i++) {
(function f() {
var i2 = i;
setTimeout(function g() {
console...
CGContextDrawImage draws image upside down when passed UIImage.CGImage
Does anyone know why CGContextDrawImage would be drawing my image upside down? I am loading an image in from my application:
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Repeater, ListView, DataList, DataGrid, GridView … Which to choose?
... specific guidance (expanding upon WebDude's excellent answer above) ...
Does your design fit into a natural spreadsheet or grid view of the data? GridView.
Do you need to display a list or other formatted view of data, possibly with headers and footers, and probably with specific controls and/or...
How do I retrieve an HTML element's actual width and height?
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Under what circumstances does it return 0?
– Cheetah
Feb 22 '12 at 23:22
47
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Is Java a Compiled or an Interpreted programming language ?
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Hence the term 'Hotspot' :) It does it to what is running often, to gain an optimisation.
– Noon Silk
Aug 25 '09 at 4:53
4
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What is thread safe or non-thread safe in PHP?
....
Needed background on how PHP "integrates" with web servers:
PHP itself does not respond to the actual HTTP requests -- this is the job of the web server. So we configure the web server to forward requests to PHP for processing, then receive the result and send it back to the user. There are mult...