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python multithreading wait till all threads finished
...all to join blocks until thread finishes execution. You will have to wait for all of the threads anyway. If t1 finishes first you will start waiting on t2 (which might be finished already and you will immediately proceed to wait for t3). If t1 took the longest to execute, when you return from it bot...
What are best practices for validating email addresses on iOS 2.0
...in great detail that the grammar specified in RFC 5322 is too complicated for primitive regular expressions.
I recommend a real parser approach like MKEmailAddress.
As quick regular expressions solution see this modification of DHValidation:
- (BOOL) validateEmail: (NSString *) candidate {
...
variable === undefined vs. typeof variable === “undefined”
The jQuery Core Style Guidelines suggest two different ways to check whether a variable is defined.
8 Answers
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What's the 'environment' task in Rake?
According to " Custom Rake Tasks ":
3 Answers
3
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PHP abstract properties
...only declare properties because they are containers of data reserved in memory on initialization.
A function on the other hand can be declared (types, name, parameters) without being defined (function body missing) and thus, can be made abstract.
"Abstract" only indicates that something was decla...
A CORS POST request works from plain JavaScript, but why not with jQuery?
I'm trying to make a Cross Origin post request, and I got it working in plain JavaScript like this:
5 Answers
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What's Go's equivalent of argv[0]?
...
import "os"
os.Args[0] // name of the command that it is running as
os.Args[1] // first command line parameter, ...
Arguments are exposed in the os package http://golang.org/pkg/os/#Variables
If you're going to do argument ha...
How to round a number to significant figures in Python
...
Thus if you need only most significant digit:
>>> from math import log10, floor
>>> def round_to_1(x):
... return round(x, -int(floor(log10(abs(x)))))
...
>>> round_to_1(0.0232)
0.02
>>> round_to_1(1234243)
1000000.0
>>> round_to_1(13)
10.0
>>...
How to upgrade Git to latest version on macOS?
...manually set our path to the local git distro instead of the Apple one.
export PATH=/usr/local/bin:$PATH
git --version
IF YOU DON'T HAVE HOMEBREW, FOLLOW THESE STEPS
Check version
$ git --version
Backup (or remove) Apple git (Optional)
$ sudo mv /usr/bin/git /usr/bin/git-apple
Install Homebrew if y...
Static classes and methods in coffeescript
...ine class methods by prefixing them with @:
class Box2DUtility
constructor: () ->
@drawWorld: (world, context) -> alert 'World drawn!'
# And then draw your world...
Box2DUtility.drawWorld()
Demo: http://jsfiddle.net/ambiguous/5yPh7/
And if you want your drawWorld to act like a constru...