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Getting the last element of a list
...ist[-1] gets the last element, some_list[-2] gets the second to last, etc, all the way down to some_list[-len(some_list)], which gives you the first element.
You can also set list elements in this way. For instance:
>>> some_list = [1, 2, 3]
>>> some_list[-1] = 5 # Set the last e...
Generate an integer that is not among four billion given ones
...many numbers there are in the input file with any given 16-bit prefix, for all possible 16-bit prefixes in one pass through the input file. At least one of the buckets will have be hit less than 216 times. Do a second pass to find of which of the possible numbers in that bucket are used already.
If...
remove all variables except functions
I have loaded in a R console different type of objects.
I can remove them all using
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Entity Framework - Start Over - Undo/Rollback All Migrations
...oint where I just want to start over, so is there a way to completely undo all migrations, erase the history, and delete the migration code, so I'm back to square one?
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In Xcode, how to suppress all warnings in specific source files?
...-click in the Compiler Flags column for that file and enter -w to turn off all warnings for that file.
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What is the difference between a port and a socket?
...because a connection is identified by both its local and remote endpoints, allowing traffic to be routed to a specific service instance.
There can only be one listener socket for a given address/port combination.
Exposition
This was an interesting question that forced me to re-examine a number of...
How to list of all the tables defined for the database when using active record?
How do I get a list of all the tables defined for the database when using active record?
5 Answers
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PowerShell says “execution of scripts is disabled on this system.”
I am trying to run a cmd file that calls a PowerShell script from cmd.exe , but I am getting this error:
32 Answers
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How to gzip all files in all sub-directories into one compressed file in bash
This post describes how to gzip each file individually within a directory structure. However, I need to do something slightly different. I need to produce one big gzip file for all files under a certain directory. I also need to be able to specify the output filename for the compressed file (e.g., ...
Include all files in a folder in a single bundle
When using BundleConfig is it possible to include all files of a folder including all the files of the childfolders (and their childfolders etc.)?
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