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Is errno thread-safe?
...umber by several library functions. If a macro definition is suppressed in order to access an actual object, or a program defines an identifier with the name errno, the behavior is undefined. [...continued...]
– Jonathan Leffler
Aug 25 '14 at 16:26
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Django - filtering on foreign key properties
...ects.filter(
desc__contains=filter,
project__name__contains="Foo").order_by("desc")
The Django Many-to-one documentation has this and other examples of following Foreign Keys using the Model API.
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How do you get a list of the names of all files present in a directory in Node.js?
... @user3705055 unless you're using gulp to read in a directory of source order dependant files and compile them into a single executable.
– r3wt
Apr 7 '16 at 20:59
3
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Length of generator output [duplicate]
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I have a filtered list I expect to be on the order of 2000000000 elements. I can't just use a regular list; I need to use a generator. Now, because of how these elements are being sourced, I can actually run through them pretty efficiently -- I just can't store them bec...
How to read a file into a variable in shell?
... all.
My approach now uses read along with the printf builtin's -v flag in order to read the contents of stdin directly into a variable.
# Reads stdin into a variable, accounting for trailing newlines. Avoids
# needing a subshell or command substitution.
# Note that NUL bytes are still unsupported, ...
SQL Server: Filter output of sp_who2
....dbo.sysprocesses sp
JOIN master.dbo.sysdatabases sd ON sp.dbid = sd.dbid
ORDER BY spid
Now you can easily add any ORDER BY or WHERE clauses you like to get meaningful output.
Alternatively, you might consider using Activity Monitor in SSMS (Ctrl + Alt + A) as well
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How are feature_importances in RandomForestClassifier determined?
...s a list of DecisionTreeClassifier (as mentioned in the documentation). In order to compute the feature_importances_ for the RandomForestClassifier, in scikit-learn's source code, it averages over all estimator's (all DecisionTreeClassifer's) feature_importances_ attributes in the ensemble.
In Deci...
Grep and Sed Equivalent for XML Command Line Processing
When doing shell scripting, typically data will be in files of single line records like csv. It's really simple to handle this data with grep and sed . But I have to deal with XML often, so I'd really like a way to script access to that XML data via the command line. What are the best tools?
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How do I expand the output display to see more columns of a pandas DataFrame?
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In order to set no limits, None can be used (instead of 999, etc.).
– Eric O Lebigot
Sep 14 '17 at 19:27
5
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The best way to remove duplicate values from NSMutableArray in Objective-C?
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Your NSSet approach is the best if you're not worried about the order of the objects, but then again, if you're not worried about the order, then why aren't you storing them in an NSSet to begin with?
I wrote the answer below in 2009; in 2011, Apple added NSOrderedSet to iOS 5 and Mac OS...