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How to increment a datetime by one day?

... All of the current answers are wrong in some cases as they do not consider that timezones change their offset relative to UTC. So in some cases adding 24h is different from adding a calendar day. Proposed solution The follo...
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How to make a PHP SOAP call using the SoapClient class

...ing) <?php // Create Contact class class Contact { public function __construct($id, $name) { $this->id = $id; $this->name = $name; } } // Initialize WS with the WSDL $client = new SoapClient("http://localhost:10139/Service1.asmx?wsdl"); // Create Contact obj ...
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Python circular importing?

... of it) for the first time, the code inside the module is executed sequentially like any other code; e.g., it is not treated any differently that the body of a function. An import is just a command like any other (assignment, a function call, def, class). Assuming your imports occur at the top of th...
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How does “cat

... This is called heredoc format to provide a string into stdin. See https://en.wikipedia.org/wiki/Here_document#Unix_shells for more details. From man bash: Here Documents This type of redirection instructs the shell to read...
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How to export/import PuTTy sessions list?

...utty-sessions.reg" HKEY_CURRENT_USER\Software\SimonTatham\PuTTY\Sessions All settings: regedit /e "%USERPROFILE%\Desktop\putty.reg" HKEY_CURRENT_USER\Software\SimonTatham Powershell: Only sessions: reg export HKCU\Software\SimonTatham\PuTTY\Sessions ([Environment]::GetFolderPath("Desktop") ...
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Linux command or script counting duplicated lines in a text file?

...3 } or you can use a simple one-liner: $ cat filename | python3 -c 'print(__import__("json").dumps(__import__("collections").Counter(map(str.strip, __import__("fileinput").input())), indent=2))' share | ...
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Add params to given URL in Python

... @florian : At least in python 2.7 you then need to call urlencode as urllib.urlencode(query, doseq=True). Otherwise, parameters that existed in the original url are not preserved correctly (because they are returned as tuples from @parse_qs@ – rluba ...
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Matplotlib: “Unknown projection '3d'” error

...e you using? (Try running: python -c 'import matplotlib; print matplotlib."__version__") I'm guessing you're running version 0.99, in which case you'll need to either use a slightly different syntax or update to a more recent version of matplotlib. If you're running version 0.99, try doing this in...
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Can you nest html forms?

... I agree with the answer, but to ask another, why not? Why does HTML not allow for nesting forms? To me, it appears to be a limitation that we would be better off without. There are many examples where using nested forms would be easier to program (i.e. using an upload photo form with a profile ed...
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is_null($x) vs $x === null in PHP [duplicate]

...someone strongly suggested that I use is_null() instead as it is specifically designed for the null-evaluation purpose. He also started talking about math or something. ...