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Remove unwanted parts from strings in a column
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5 13:00 110
With extract, it is necessary to specify at least one capture group. expand=False will return a Series with the captured items from the first capture group.
.str.split and .str.get
Splitting works assuming all your strings follow this consistent structure.
# df['result'...
How do I use Notepad++ (or other) with msysgit?
...010-2011:
zumalifeguard's solution (upvoted) is simpler than the original one, as it doesn't need anymore a shell wrapper script.
As I explain in "How can I set up an editor to work with Git on Windows?", I prefer a wrapper, as it is easier to try and switch editors, or change the path of one edit...
Visual Studio or Resharper functionality for placement of using directives
...st scope
I'm not sure whether R#'s code cleanup will reorder the existing ones for you though.
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Best way to write to the console in PowerShell
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The middle one writes to the pipeline. Write-Host and Out-Host writes to the console. 'echo' is an alias for Write-Output which writes to the pipeline as well. The best way to write to the console would be using the Write-Host cmdlet.
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How do browser cookie domains work?
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very late follow up question to this one. My own experience and this: webmasters.stackexchange.com/questions/55790/… suggest that the domain of example.com will not be available to www.example.com, but this example suggests otherwise. Is this example wrong, ...
What does the WPF star do (Width=“100*”)
...widths with * (proportional) widths; in that case the * columns are apportioned to the remainder after the auto-fit and fixed widths have been calculated -
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto" /> <!-- Auto-fit to content, 'Hi' -->
<ColumnDefinition ...
Find where java class is loaded from
Does anyone know how to programmaticly find out where the java classloader actually loads the class from?
11 Answers
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Liquibase lock - reasons?
...e scripts will not run because they expect the lock to exist. If you have done this already you can add an empty lock to fix the issue INSERT INTO yourdb.DATABASECHANGELOGLOCK VALUES (1, 0, null, null);
– Rudi Kershaw
Nov 28 '17 at 11:39
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What is stack unwinding?
...hen the scope is exited (here the scope is of the function func.) This is done by the compiler inserting calls to destructors of automatic (stack) variables.
Now this is a very powerful concept leading to the technique called RAII, that is Resource Acquisition Is Initialization, that helps us manag...
How can I use optional parameters in a T-SQL stored procedure?
...arches based on the given parameters is a complicated subject and doing it one way over another, even with only a very slight difference, can have massive performance implications. The key is to use an index, ignore compact code, ignore worrying about repeating code, you must make a good query exec...