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How do I validate a date string format in python?
I have a python method which accepts a date input as a string .
5 Answers
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How do I capture the output into a variable from an external process in PowerShell?
...apture it's command output to a variable in PowerShell. I'm currently using this:
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How can I maintain fragment state when added to the back stack?
I've written up a dummy activity that switches between two fragments. When you go from FragmentA to FragmentB, FragmentA gets added to the back stack. However, when I return to FragmentA (by pressing back), a totally new FragmentA is created and the state it was in is lost. I get the feeling I'm ...
How to move files from one git repo to another (not a clone), preserving history
Our Git repositories started out as parts of a single monster SVN repository where the individual projects each had their own tree like so:
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What does middleware and app.use actually mean in Expressjs?
...ion of what middleware actually is and what the app.use statement is doing. Even the express docs themselves are a bit vague on this. Can you explain these concepts for me please?
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Appending a vector to a vector [duplicate]
Assuming I have 2 standard vectors:
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Why is there “data” and “newtype” in Haskell? [duplicate]
...pe definition is just a data definition that obeys some restrictions (e.g., only one constructor), and that due to these restrictions the runtime system can handle newtype s more efficiently. And the handling of pattern matching for undefined values is slightly different.
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Calling C++ class methods via a function pointer
...MyClass */
};
pt2ConstMember = &TMyClass::DoIt; // note: <pt2Member> may also legally point to &DoMore
// Calling Function using Function Pointer
(*this.*pt2ConstMember)(12, 'a', 'b');
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What's the difference between disabled=“disabled” and readonly=“readonly” for HTML form input fields
I have read a bit on this, but I can't seem to find anything solid about how different browsers treat things.
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How to sort in-place using the merge sort algorithm?
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Knuth left this as an exercise (Vol 3, 5.2.5). There do exist in-place merge sorts. They must be implemented carefully.
First, naive in-place merge such as described here isn't the right solution. It downgrades the performance to O(N2).
The idea is to sort part of the array while using the rest a...