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Hour from DateTime? in 24 hours format

...in 24 hours format. For example: If the hour is 2:20:23 p.m. i want to convert it to 14:20 and that's it. 5 Answers ...
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Deleting folders in python recursively

... delete a file, if it is read only. therefore, one can use - import os, sys import stat def del_evenReadonly(action, name, exc): os.chmod(name, stat.S_IWRITE) os.remove(name) if os.path.exists("test/qt_env"): shutil.rmtree('test/qt_env',onerror=del_evenReadonly) ...
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What's the best way to check if a file exists in C?

...y test for write permission, since the access function does not take DACLs into account. access( fname, W_OK ) may return 0 (success) because the file does not have the read-only attribute set, but you still may not have permission to write to the file. ...
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Hidden Features of C#? [closed]

...'ve always wondered why he does that because I feel it's more "natural" to convert to lowercase first. After reading the book now I know why. share answered Aug 15 '08 at 11:0...
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What does if __name__ == “__main__”: do?

... foo2.py on the command-line? Why? # Suppose this is foo2.py. import os, sys; sys.path.insert(0, os.path.dirname(__file__)) # needed for some interpreters def functionA(): print("a1") from foo2 import functionB print("a2") functionB() print("a3") def functionB(): print("b...
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How do I drop table variables in SQL-Server? Should I even do this?

... @JNKs point about them being unaffected by transactions is important, you can use table variables to hold data and write to a log table after an error causes a rollback. – HLGEM Apr 13 '11 at 18...
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How to find current transaction level?

...alizable' WHEN 5 THEN 'Snapshot' END AS TRANSACTION_ISOLATION_LEVEL FROM sys.dm_exec_sessions where session_id = @@SPID docs.microsoft.com reference for the constant values. share | improve thi...
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Async/await vs BackgroundWorker

...e DoWork, RunWorkerCompleted, and ProgressChanged event handlers. If you "converted" that to async/await, you'd do something like: IProgress<int> progress = new Progress<int>(); progress.ProgressChanged += ( s, e ) => { // TODO: do something with e.Prog...
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Parsing JSON Object in Java [duplicate]

... will simply return the default value if it is not present and even try to convert value to int if it is of string type and vice-versa so Simply No null or NumberFormat exceptions at all in case of missing key or value From docs Get an optional string associated with a key. It returns the de...
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C++ SFINAE examples?

... No = !Yes }; }; When IsClassT<int>::Yes is evaluated, 0 cannot be converted to int int::* because int is not a class, so it can't have a member pointer. If SFINAE didn't exist, then you would get a compiler error, something like '0 cannot be converted to member pointer for non-class type in...