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Concatenating two lists - difference between '+=' and extend()

I've seen there are actually two (maybe more) ways to concatenate lists in Python: One way is to use the extend() method: 9...
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How to get the name of enumeration value in Swift?

If I have an enumeration with raw Integer values: 12 Answers 12 ...
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`date` command on OS X doesn't have ISO 8601 `-I` option?

In a Bash script, I want to print the current datetime in ISO 8601 format (preferably UTC), and it seems that this should be as simple as date -I : ...
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Git search for string in a single file's history

So if I have a file called foo.rb and it is giving me an error for a missing method called bar , so I want to search the history of foo.rb for the string bar to see if it was ever defined in the past. ...
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Performing Inserts and Updates with Dapper

I am interested in using Dapper - but from what I can tell it only supports Query and Execute. I do not see that Dapper includes a way of Inserting and Updating objects. ...
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How to find a table having a specific column in postgresql

I'm using PostgreSQL 9.1. I have the column name of a table. Is it possible to find the table(s) that has/have this column? If so, how? ...
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Select random row from a sqlite table

I have a sqlite table with the following schema: 7 Answers 7 ...
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Storing C++ template function definitions in a .CPP file

I have some template code that I would prefer to have stored in a CPP file instead of inline in the header. I know this can be done as long as you know which template types will be used. For example: ...
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How do I initialize an empty array in C#?

Is it possible to create an empty array without specifying the size? 13 Answers 13 ...
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How can I get the intersection, union, and subset of arrays in Ruby?

... Utilizing the fact that you can do set operations on arrays by doing &(intersection), -(difference), and |(union). Obviously I didn't implement the MultiSet to spec, but this should get you started: class MultiSet attr_access...