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How to parse float with two decimal places in javascript?
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If you need performance (like in games):
Math.round(number * 100) / 100
It's about 100 times as fast as parseFloat(number.toFixed(2))
http://jsperf.com/parsefloat-tofixed-vs-math-round
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How to install Xcode Command Line Tools
...will be automatically updated using Software Update. OS X 10.9 is required for this feature. For earlier versions, continue to use the in-app download in Xcode.
Running the command in terminal produces the following GUI:
Inside Xcode (5.0)
Xcode includes a new "Downloads" preference pane to insta...
How to hide “Showing 1 of N Entries” with the dataTables.js library
...hat is when using the javascript library dataTables? I think I was looking for something along these lines...
5 Answers
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How to prevent IFRAME from redirecting top-level window
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Try using the onbeforeunload property, which will let the user choose whether he wants to navigate away from the page.
Example: https://developer.mozilla.org/en-US/docs/Web/API/Window.onbeforeunload
In HTML5 you can use sandbox property. Ple...
If threads share the same PID, how can they be identified?
..._| pid=42 |_
_/ | tgid=42 | \_ (new thread) _
_ (fork) _/ +---------+ \
/ +---------+
+---------+ | process |
| process | | pid=44 |
| pid=...
Force SSL/https using .htaccess and mod_rewrite
How can I force to SSL/https using .htaccess and mod_rewrite page specific in PHP.
9 Answers
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Django queries - id vs pk
...lash with the id() function (everywhere except variable names). The reason for this is that pk is a property which is 7 times slower than id since it takes time looking up pk attribute name in meta.
%timeit obj.id
46 ns ± 0.187 ns per loop (mean ± std. dev. of 7 runs, 10000000 loops each)
%timeit...
Is it possible to await an event instead of another async method?
...ew SemaphoreSlim(0, 1);
// set signal in event
signal.Release();
// wait for signal somewhere else
await signal.WaitAsync();
Alternatively, you can use an instance of the TaskCompletionSource<T> Class to create a Task<T> that represents the result of the button click:
private Task...
C# pattern to prevent an event handler hooked twice [duplicate]
...plement the event and check the invocation list. You'll also need to check for null:
using System.Linq; // Required for the .Contains call below:
...
private EventHandler foo;
public event EventHandler Foo
{
add
{
if (foo == null || !foo.GetInvocationList().Contains(value))
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remove objects from array by object property
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I assume you used splice something like this?
for (var i = 0; i < arrayOfObjects.length; i++) {
var obj = arrayOfObjects[i];
if (listToDelete.indexOf(obj.id) !== -1) {
arrayOfObjects.splice(i, 1);
}
}
All you need to do to fix the bug is decreme...