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Difference between String replace() and replaceAll()
...ring 's replace() and replaceAll() methods,
other than later uses regex? For simple substitutions like, replace . with / ,
is there any difference?
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pandas read_csv and filter columns with usecols
...s.read_csv when I filter the columns with usecols and use multiple indexes.
5 Answers
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How to check if all of the following items are in a list?
...d, that there is related question, about how to find if at least one item exists in a list:
How to check if one of the following items is in a list?
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Why use the 'ref' keyword when passing an object?
...eference to a reference. This allows you to do things as described in the example given above. But, when the parameter type is a primitive value (e.g. int), then if this parameter is assigned to within the method, the value of the argument that was passed in will be changed after the method returns:...
How do I change permissions for a folder and all of its subfolders and files in one step in Linux?
...of a folder and all its sub folders and files in one step (command) in Linux.
16 Answers
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iOS UIImagePickerController result image orientation after upload
...aw image data. There's a good chance that this flag is being saved to the exif data in the uploaded jpeg image, but the program you use to view it is not honoring that flag.
To rotate the UIImage to display properly when uploaded, you can use a category like this:
UIImage+fixOrientation.h
@interf...
Common xlabel/ylabel for matplotlib subplots
...this answer to your specific case:
import matplotlib.pyplot as plt
fig, ax = plt.subplots(nrows=3, ncols=3, sharex=True, sharey=True, figsize=(6, 6))
fig.text(0.5, 0.04, 'common X', ha='center')
fig.text(0.04, 0.5, 'common Y', va='center', rotation='vertical')
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Setting design time DataContext on a Window is giving a compiler error?
I have the following XAML below for the main window in my WPF application, I am trying to set the design time d:DataContext below, which I can successfully do for all my various UserControls, but it gives me this error when I try to do it on the window...
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Extracting text OpenCV
I am trying to find the bounding boxes of text in an image and am currently using this approach:
10 Answers
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How to use PrimeFaces p:fileUpload? Listener method is never invoked or UploadedFile is null / throw
...rm> needs to be set to multipart/form-data. When this is absent, the ajax upload may just work, but the general browser behavior is unspecified and dependent on form composition and webbrowser make/version. Just always specify it to be on the safe side.
When using mode="advanced" (i.e. ajax uploa...