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what is the most efficient way of counting occurrences in pandas?
...].astype('str').stack().value_counts().sum() which equates to setting each selected column to str type, stacking all individual columns on top, forming basically one column and then doing the value_counts() and sum() on that one column. :) Stack is pretty useful, it might not be the most obvious cho...
PHP & mySQL: Year 2038 Bug: What is it? How to solve it?
...ything, I asked my backend (MSSQL) to do this job instead of PHP!
$qry = "select DATEADD(month, 1, :date) next_date ";
$rs_tmp = $pdo->prepare($qry);
$rs_tmp->bindValue(":date", '2038/01/15');
$rs_tmp->execute();
$row_tmp = $rs_tmp->fetch(PDO::FETCH_ASSOC);
echo $row_tmp['next_date'];
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Renaming or copying files and folder using NERDTree on Vim. Is it possible?
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Press m on the node you want to then select (m)ove the current node. Moving is the same as renaming.
NERDTree Menu. Use j/k/enter and the shortcuts indicated
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> (a)dd a childnode
(m)ove the curent n...
How fast is D compared to C++?
...out printing code and replaced writefln with writeln
Changed imports to be selective
Used pow operator (^^) instead of manual multiplication for final step of calculating average
Removed the size_type and replaced appropriately with the new index_type alias
...thus resulting in scalar2.cpp (pasteb...
How to get a ListBox ItemTemplate to stretch horizontally the full width of the ListBox?
...orizontalAlignment" not "HorizontalContentAlignment". It is pretty easy to select the the first suggestion, since both are using "Stretch".
– Jarle Bjørnbeth
Nov 20 '14 at 12:31
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Can I get a list of files marked --assume-unchanged?
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PowerShell solution, using Select-String \ sls
git ls-files -v | sls -pattern ^h -casesensitive
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Should I use AppDomain.CurrentDomain.BaseDirectory or System.Environment.CurrentDirectory?
...log in WinForms will change this value to the directory where the file was selected from.
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Shortcut to switch between design and text in Android Studio
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You can find it in Settings->KeyMap
"Select next Tab in multi-editor file" CRTL+SHIFT+RIGHT (it may depend by the platform).
You can change it.
Now you can check sequence of button in top right bar to switch between design, text and preview.
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App Inventor 2 CustomWebView 拓展：高级版Web浏览器，完美浏览现代Web前...
...ebView loads pages in overview mode
LongClickable
Returns whether text selection and context menu are enabled or not
OverScrollMode
Gets over scroll mode
PromptForPermission
Sets whether webview will prompt for permission and raise ‘OnPermissionRequest’ event or not else assume permi...
What are the differences between Deferred, Promise and Future in JavaScript?
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These answers, including the selected answer, are good for introducing promises
conceptually, but lacking in specifics of what exactly the differences are in
the terminology that arises when using libraries implementing them (and there
are important diff...