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How to set time zone of a java.util.Date?
...) actually uses a Calendar to interpret this millisecond time. So printing out a Date makes it appear to have a (default) timezone, leading to understandable questions about how to set that timezone.
– David Carboni
Jul 11 '12 at 13:41
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Keyboard shortcuts with jQuery
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What about jQuery Hotkeys?
jQuery Hotkeys lets you watch for keyboard events anywhere in your code supporting almost any key combination.
To bind Ctrl+c to a function (f), for example:
$(document).bind('keydown', 'ctrl+c', f)...
What is the equivalent to a JavaScript setInterval/setTimeout in Android/Java?
Can anyone tell me if an equivalent for setInterval/setTimeout exists for Android? Does anybody have any example about how to do it?
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Efficiency of premature return in a function
...n I encounter frequently as an inexperienced programmer and am wondering about particularly for an ambitious, speed-intensive project of mine I'm trying to optimize. For the major C-like languages (C, objC, C++, Java, C#, etc) and their usual compilers, will these two functions run just as efficien...
Get a random boolean in python?
...a boolean instead of a long then
bool(random.getrandbits(1))
is still about twice as fast as random.choice([True, False])
Both solutions need to import random
If utmost speed isn't to priority then random.choice definitely reads better
$ python -m timeit -s "import random" "random.choice([True...
Entity Attribute Value Database vs. strict Relational Model Ecommerce
...benefit of having all the data for one record in one place. The metadata about those columns needs to be stored somewhere, however, and this is where the cost creeps in. Sure, we can cache the metadata in ram, but it still costs more than having the domain modelled directly in application code. Cert...
Get the client's IP address in socket.io
...up needing to parse through some commit logs on git hub to figure this one out, but the following code does actually work for me now:
var io = require('socket.io').listen(server);
io.sockets.on('connection', function (socket) {
var address = socket.handshake.address;
console.log('New connectio...
CSS margin terror; Margin adds space outside parent element [duplicate]
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Add overflow:auto to your #page div.
jsFiddle example
And check out collapsing margins while you're at it.
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Detecting arrow key presses in JavaScript
...ow do I detect when one of the arrow keys are pressed? I used this to find out:
21 Answers
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Conversion of System.Array to List
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Hard to say without knowing the real dataset size (List internally uses arrays that must be able to expand. Arrays are immutable.) If you know the List size upfront this way could improve performance slightly… but the gain is going to be...