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How to install latest version of Node using Brew
... version it's going to install. It's set to 0.4.0 so I ended up installing from src anyway, but this is right. Thank you.
– PandaWood
Feb 20 '11 at 12:12
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Volatile boolean vs AtomicBoolean
...t you write code that is guaranteed to execute only once, even when called from multiple threads. For example:
final AtomicBoolean isJobDone = new AtomicBoolean(false);
...
if (isJobDone.compareAndSet(false, true)) {
listener.notifyJobDone();
}
Is guaranteed to only notify the listener once...
Java `final` method: what does it promise?
...partial customization.
There are a number of reasons to prevent something from being customizable, including:
Performance -- Some compilers can analyse and optimise the operation, especially the one without side-effects.
Obtain encapsulated data -- look at immutable Objects where their attributes...
Running a cron job on Linux every six hours
...out
0 */6 * * * /path/to/mycommand
This means every sixth hour starting from 0, i.e. at hour 0, 6, 12 and 18 which you could write as
0 0,6,12,18 * * * /path/to/mycommand
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How to extract the hostname portion of a URL in JavaScript
Is there a really easy way to start from a full URL:
13 Answers
13
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How to do multiple arguments to map function where one remains the same in python?
...able is consumed, so an infinite iterable is perfectly fine:
>>> from operator import add
>>> from itertools import repeat
>>> list(map(add, [1,2,3], repeat(4)))
[5, 6, 7]
In fact, this is equivalent to the example for repeat in the docs:
>>> list(map(pow, ran...
Rails respond_with: how does it work?
...into ActionController::Base, the class your ApplicationController inherits from. Then there is ActionController::Responder which provides the default behavior when using respond_with.
By default, the only behavior rails provides in the response is an implicit attempt to render a template with a n...
Convert an NSURL to an NSString
I have an app where the user can choose an image either from the built-in app images or from the iphone photo library. I use an object Occasion that has an NSString property to save the imagePath .
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Error handling in getJSON calls
...
Here's my addition.
From http://www.learnjavascript.co.uk/jq/reference/ajax/getjson.html and the official source
"The jqXHR.success(), jqXHR.error(), and jqXHR.complete() callback
methods introduced in jQuery 1.5 are deprecated as of jQuery 1.8...
Is a url query parameter valid if it has no value?
...
The isindex magic name from HTML5 allows sending a query string without key-value format stackoverflow.com/a/37579004/895245
– Ciro Santilli 郝海东冠状病六四事件法轮功
Jun 1 '16 at 21:23
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