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Black transparent overlay on image hover with only CSS?
...t black overlay to an image whenever the mouse is hovering over the image with only CSS. Is this possible? I tried this:
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How to write header row with csv.DictWriter?
Assume I have a csv.DictReader object and I want to write it out as a CSV file. How can I do this?
3 Answers
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How to create query parameters in Javascript?
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edited Oct 24 '18 at 16:37
Gibolt
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How can I use Python to get the system hostname?
I'm writing a chat program for a local network. I would like be able to identify computers and get the user-set computer name with Python.
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Keyboard shortcut to comment lines in Sublime Text 2
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edited Jul 28 '14 at 7:19
answered Jul 22 '12 at 8:44
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Preloading images with JavaScript
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edited Sep 16 '16 at 19:01
Alex M.
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Two submit buttons in one form
I have two submit buttons in a form. How do I determine which one was hit serverside?
19 Answers
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What is the proper way to comment functions in Python?
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The correct way to do it is to provide a docstring. That way, help(add) will also spit out your comment.
def add(self):
"""Create a new user.
Line 2 of comment...
And so on...
"""
That's three double quotes to open the comment ...
From ND to 1D arrays
... view) or np.ndarray.flatten (for a 1D copy) or np.ndarray.flat (for an 1D iterator):
In [12]: a = np.array([[1,2,3], [4,5,6]])
In [13]: b = a.ravel()
In [14]: b
Out[14]: array([1, 2, 3, 4, 5, 6])
Note that ravel() returns a view of a when possible. So modifying b also modifies a. ravel() retur...
How to validate an Email in PHP?
...he filter_var() function, which gives you a lot of handy validation and sanitization options.
filter_var($email, FILTER_VALIDATE_EMAIL)
PHP Manual filter_var()
Available in PHP >= 5.2.0
If you don't want to change your code that relied on your function, just do:
function isValidEmail($emai...