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How to send a “multipart/form-data” with requests in python?

...escribed in the section POST a Multipart-Encoded File in the requests quickstart: >>> url = 'http://httpbin.org/post' >>> files = {'file': ('report.xls', open('report.xls', 'rb'), 'application/vnd.ms-excel', {'Expires': '0'})} In the above, the tuple is composed as follows: (fi...
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Why should hash functions use a prime number modulus?

...ou can only do (bucket_count / stride) probes before you're back where you started. The case you most want to avoid is stride = 0, of course, which must be special-cased, but to avoid also special-casing bucket_count / stride equal to a small integer, you can just make the bucket_count prime and not...
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Git submodule head 'reference is not a tree' error

...mmit was pushed in A, but the actual commit was not pushed from B. So I'd start there. Less likely, there's a permissions problem, and the commit cannot be pulled (possible if you're using git+ssh). Make sure the submodule paths look ok in .git/config and .gitmodules. One last thing to try - ins...
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Using Java 8's Optional with Stream::flatMap

...tand.) However, sometimes things can be too clever. The modified code also starts off with an Optional<Other>. Then it calls Optional.map which is defined as follows: If a value is present, apply the provided mapping function to it, and if the result is non-null, return an Optional describ...
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How do you organize your version control repository?

... or directory within each project should be made via an absolute path that starts with a configurable root directory variable, e.g. ${basedir}/sub/dir/file.txt in Ant. – Rob Williams Jul 7 '09 at 17:46 ...
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Passing arrays as parameters in bash

...g off the [subscript]= part is short hand for a numerically indexed array, starting with the ordinal index of 0 and incrementing with each new value in the assignment statement. Therefore, ${array} should evaluate to the entire array, indexes and all. It should evaluate to the inverse of the assig...
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If strings are immutable in .NET, then why does Substring take O(n) time?

...ly changed from using the same base char[] (with different pointers to the start and end) to creating a new String. This clearly shows that the cost-benefit analysis must show a preference for the creation of a new String. – Phylogenesis Jul 1 '15 at 9:32 ...
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Capture Image from Camera and Display in Activity

...nt(android.provider.MediaStore.ACTION_IMAGE_CAPTURE); startActivityForResult(cameraIntent, CAMERA_REQUEST); } } }); } @Override public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[]...
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What is Hindley-Milner?

... McKenna's JavaScript implementation on bitbucket, which also helps to get started (worked for me). 'HTH, share | improve this answer | follow | ...
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Simple Digit Recognition OCR in OpenCV-Python

...ll the digits are of same kind and same size. But any way, this is a good start to go for beginners ( I hope so). share | improve this answer | follow | ...