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Remove unwanted parts from strings in a column
...ings in a column?
6 years after the original question was posted, pandas now has a good number of "vectorised" string functions that can succinctly perform these string manipulation operations.
This answer will explore some of these string functions, suggest faster alternatives, and go into a ti...
Cartesian product of x and y array points into single array of 2D points
... following sections, I include some tests of other alternatives. These are now somewhat out of date, but rather than duplicate effort, I've decided to leave them here out of historical interest. For up-to-date tests, see Panzer's answer, as well as Nico Schlömer's.
Tests against alternatives
Here...
What are valid values for the id attribute in HTML?
...ill never wonder "was it firstName or FirstName?" because you will always know that you should type first_name. Prefer camel case? Then limit yourself to that, no hyphens or underscores, and always, consistently use either upper-case or lower-case for the first character, don't mix them.
A now ve...
Is there a way to detach matplotlib plots so that the computation can continue?
...
print 'yay'
print 'computation continues...'
print 'that rocks.'
print 'Now lets wait for the graph be closed to continue...:'
p.join()
That has the overhead of launching a new process, and is sometimes harder to debug on complex scenarios, so I'd prefer the other solution (using matplotlib's n...
What is the difference between exit and return? [duplicate]
... _Exit from #include <stdlib.h>) terminates the process immediately.
Now there are also issues that are specific to C++.
C++ performs much more work than C when it is exiting from functions (return-ing). Specifically it calls destructors of local objects going out of scope. In most cases progr...
Removing colors from output
...ou're not trying to match a pipe character. But that's not important right now.)
If you switch that final match in your command to [mGK] or (m|G|K), you should be able to catch that extra control sequence.
./somescript | sed -r "s/\x1B\[([0-9]{1,3}(;[0-9]{1,2})?)?[mGK]//g"
...
How can I create a unique constraint on my column (SQL Server 2008 R2)?
... PK__Customer__3213E83FCC4A1DFA (n/a) (n/a) (n/a) (n/a) id
---- now adding the unique constraint
ALTER TABLE Customer ADD CONSTRAINT U_Name UNIQUE(Name)
-- Commands completed successfully.
sp_help Customer
---> index
---index_name index_description index_keys
---PK__Customer__3...
Getting distance between two points based on latitude/longitude
...("Result:", distance)
print("Should be:", 278.546, "km")
The distance is now returning the correct value of 278.545589351 km.
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git command to move a folder inside another
... don't see old git history in my project. At least my project is not lost. Now I have my project in newFolderName, but without the history (
Just want to warn, be carefull using advice of "Andres Jaan Tack", if you dont want to lose your git hsitory.
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Optional query string parameters in ASP.NET Web API
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This issue has been fixed in the regular release of MVC4.
Now you can do:
public string GetFindBooks(string author="", string title="", string isbn="", string somethingelse="", DateTime? date= null)
{
// ...
}
and everything will work out of the box.
...