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How do I change column default value in PostgreSQL?
How do I change column default value in PostgreSQL?
2 Answers
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Scala: join an iterable of strings
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How about mkString ?
theStrings.mkString(",")
A variant exists in which you can specify a prefix and suffix too.
See here for an implementation using foldLeft, which is much more verbose, but perhaps worth looking at for education'...
Can I add comments to a pip requirements file?
I'd like to add comments for a few packages in a pip requirements file. (Just to explain why that package is on the list.) Can I do this?
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Precedence and bitmask operations
I've come across a (seemingly) very strange case.
1 Answer
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A regex to match a substring that isn't followed by a certain other substring
I need a regex that will match blahfooblah but not blahfoobarblah
5 Answers
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Android SQLite: nullColumnHack parameter in insert/replace methods
The Android SDK has some convenience methods for manipulating data with SQLite. However both the insert and replace methods use some nullColumnHack parameter which usage I don't understand.
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logger configuration to log to file and print to stdout
I'm using Python's logging module to log some debug strings to a file which works pretty well. Now in addition, I'd like to use this module to also print the strings out to stdout. How do I do this? In order to log my strings to a file I use following code:
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GIT repository layout for server with multiple projects
... I like about the way I have Subversion set up is that I can have a single main repository with multiple projects. When I want to work on a project I can check out just that project. Like this
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regex to match a single character that is anything but a space
I need to match a single character that is anything but a space but I don't know how to do that with regex.
2 Answers
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Java time-based map/cache with expiring keys [closed]
Do any of you know of a Java Map or similar standard data store that automatically purges entries after a given timeout? This means aging, where the old expired entries “age-out” automatically.
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