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Convert a list to a dictionary in Python
...), which would normally be a code smell.
b = {a[i]: a[i+1] for i in range(0, len(a), 2)}
So the iter()/izip() method is still probably the most Pythonic in Python 3, although as EOL notes in a comment, zip() is already lazy in Python 3 so you don't need izip().
i = iter(a)
b = dict(zip(i, i))
...
Changing image sizes proportionally using CSS?
...on (in my example the width), when telling the image to have the width at 100%, it will make it the full width of the container. The auto at the height will make the image have the height proportional to the new width.
Ex:
HTML:
<div class="container">
<img src="something.png" />
<...
Array Length in Java
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It contains the allocated size, 10. The unassigned indexes will contain the default value which is 0 for int.
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How to get the error message from the error code returned by GetLastError()?
...any.
DWORD errorMessageID = ::GetLastError();
if(errorMessageID == 0)
return std::string(); //No error message has been recorded
LPSTR messageBuffer = nullptr;
size_t size = FormatMessageA(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_IN...
Pycharm does not show plot
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103
Just use
plt.show()
This command tells the system to draw the plot in Pycharm.
Example:
plt.im...
How do you query for “is not null” in Mongo?
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10 Answers
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How to remove all MySQL tables from the command-line without DROP database permissions? [duplicate]
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309
You can generate statement like this: DROP TABLE t1, t2, t3, ... and then use prepared statemen...
Reverting a single file to a previous version in git [duplicate]
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910
Let's start with a qualitative description of what we want to do (much of this is said in Ben St...
HTML text input allow only numeric input
...rowsers don't support the step, min and max attributes.
Chrome (version 71.0.3578.98) still allows the user to enter the characters e and E into the field. Also see this question.
Firefox (version 64.0) and Edge (EdgeHTML version 17.17134) still allow the user to enter any text into the field.
Try...
Android - How to get application name? (Not package name)
...nfo();
int stringId = applicationInfo.labelRes;
return stringId == 0 ? applicationInfo.nonLocalizedLabel.toString() : context.getString(stringId);
}
Hope this helps.
Edit
In light of the comment from Snicolas, I've modified the above so that it doesn't try to resolve the id if it is 0. I...