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Argparse: Required argument 'y' if 'x' is present
I have a requirement as follows:
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Why do C and C++ compilers allow array lengths in function signatures when they're never enforced?
This is what I found during my learning period:
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best way to preserve numpy arrays on disk
... am looking for a fast way to preserve large numpy arrays. I want to save them to the disk in a binary format, then read them back into memory relatively fastly. cPickle is not fast enough, unfortunately.
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Clean ways to write multiple 'for' loops
For an array with multiple dimensions, we usually need to write a for loop for each of its dimensions. For example:
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Can you change what a symlink points to after it is created?
Does any operating system provide a mechanism (system call — not command line program) to change the pathname referenced by a symbolic link (symlink) — other than by unlinking the old one and creating a new one?
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What is the default form HTTP method?
When an HTML form is submitted without specifying a method, what is the default HTTP method used? GET or POST?
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PHP Regex to check date is in YYYY-MM-DD format
I'm trying to check that dates entered by end users are in the YYYY-MM-DD. Regex has never been my strong point, I keep getting a false return value for the preg_match() I have setup.
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How exactly does the python any() function work?
In the python docs page for any , the equivalent code for the any() function is given as:
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Django ModelForm: What is save(commit=False) used for?
Why would I ever use save(commit=False) instead of just creating a form object from the ModelForm subclass and running is_valid() to validate both the form and model?
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CURL to access a page that requires a login from a different page
I have 2 pages: xyz.com/a and xyz.com/b . I can only access xyz.com/b if and only if I login to xyz.com/a first. If accessing xyz.com/b without going through the other, I simply get access denied (no redirect to login) via the browser. Once I login at xyz.com/a , I can access the other.
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