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Why use def main()? [duplicate]
...ll) passing custom parameters. This might be useful in unit tests, or when batch-processing. But remember that the code above will require parsing of argv, thus maybe it would be better to use a different call that pass parameters already parsed.
In an object-oriented application I've written, the c...
Get DOS path instead of Windows path
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If you're calling this from a batch script you have to escape the % signs: for %%I in ("C:\folder with spaces") do echo %%~sI
– Igor Popov
Feb 10 '15 at 13:18
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Convert SVG to image (JPEG, PNG, etc.) in the browser
...s%2FWgBMc4zDWF7YpqXGR/viewport_width=980&viewport_height=900&delay=5000&selector=%23canvas
Then you can display image with img tag:
<img src="data:image/png;base64, [base64 data]"/>
It works across browser.
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Query EC2 tags from within instance
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You can use a combination of the AWS metadata tool (to retrieve your instance ID) and the new Tag API to retrieve the tags for the current instance.
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How to display Toast in Android?
...();
Example.2
Toast.makeText(getApplicationContext(), "STRING MESSAGE", 5000).show();
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Is there a sleep function in JavaScript? [duplicate]
...rther points. The function assigned to the setTimeout is put onto an event queue. JavaScript is inherently single-threaded. If there’s at least one event on the queue that’s eligible to “fire” (like a 3000ms timeout that was set 4000ms ago), the "javascript VM" will pick one and call its han...
Skip first entry in for loop in python?
...er(iterable)
for x in itertools.islice(it, at_start):
pass
queue = collections.deque(itertools.islice(it, at_end))
for x in it:
queue.append(x)
yield queue.popleft()
Example usage:
>>> list(skip(range(10), at_start=2, at_end=2))
[2, 3, 4, 5, 6, 7]
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is there a post render callback for Angular JS directive?
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Think of the browser as queue'ing certain tasks such as "javascript execution" and "DOM rendering" separately, and what setTimeout(fn,0) does it push the currently running "javascript execution" to the back of the queue, after rendering.
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How to handle many-to-many relationships in a RESTful API?
...{ "Name": "Murray" } //=> 302 /players/5
// *client failure*
// *client retries naively*
POST /players { "Name": "Murray" } //=> 302 /players/6
POST /teams/1/players/6
Now we have an orphaned duplicate player in /players/5.
To fix this we might write custom recovery code that checks for orp...
Comparing two NumPy arrays for equality, element-wise
...mport time
exec_time0 = []
exec_time1 = []
exec_time2 = []
sizeOfArray = 5000
numOfIterations = 200
for i in xrange(numOfIterations):
A = np.random.randint(0,255,(sizeOfArray,sizeOfArray))
B = np.random.randint(0,255,(sizeOfArray,sizeOfArray))
a = time.clock()
res = (A==B).all(...