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How can I add a column that doesn't allow nulls in a Postgresql database?
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@allan.simon I've never used PostgreSQL before and I don't have it installed anywhere.
– Sean Bright
Oct 18 '15 at 19:50
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How do I get the key at a specific index from a Dictionary in Swift?
I have a Dictionary in Swift and I would like to get a key at a specific index.
10 Answers
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git ignore exception
I have a gitignore file that makes git ignore *.dll files, and that is actually the behavior I want. However, if I want an exception ( i.e. to be able to commit foo.dll ), how can I achieve this?
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Using Mockito to test abstract classes
...oNothing syntax instead of Mockito.when for stubbing the abstract methods, and if you stub any concrete calls, make sure stubbing the abstract calls comes first.
– Gonen I
Sep 6 '14 at 18:07
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find -exec a shell function in Linux?
...oesn't require exporting the function or messing around escaping arguments and is presumably more efficient since it's not spawning subshells to execute each function.
– Tom
May 30 '12 at 5:19
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Getting Python error “from: can't read /var/mail/Bio”
...xecute it as python script.py, otherwise the default shell will execute it and it will bail out at the from keyword. (Incidentally, from is the name of a command line utility which prints names of those who have sent mail to the given username, so that's why it tries to access the mailboxes).
Anoth...
Apply pandas function to column to create multiple new columns?
How to do this in pandas:
13 Answers
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how to get request path with express req object
I'm using express + node.js and I have a req object, the request in the browser is /account but when I log req.path I get '/' --- not '/account'.
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How do I fetch only one branch of a remote Git repository?
I'd like to grab a single branch (not all of them) of a remote repository and create a local tracking branch that can track further updates to that remote branch. The other branches in the remote repository are very big, so I'd like to avoid fetching them. How do I do this?
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How do I get the current line number?
...ose using .Net 4.5 or later, consider the CallerFilePath, CallerMethodName and CallerLineNumber attributes in the System.Runtime.CompilerServices namespace. For example:
public void TraceMessage(string message,
[CallerMemberName] string callingMethod = "",
[CallerFilePath] string ca...