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Why does Dijkstra's algorithm use decrease-key?
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Adding 'serial' to existing column in Postgres
... in my Postgres 9.0 database with an integer ID field (the primary key) which currently contains unique sequential integers starting at 1, but which was not created using the 'serial' keyword.
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Skip a submodule during a Maven build
We have a need to be able to skip a submodule in certain environments.
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using gitignore to ignore (but not delete) files
I have a tmp directory in my git repo I'd like to still exist, but be ignored. I added it to .gitignore , but git status still tells me about changes to files in that directory. I tried git rm -r --cached , but that removes it from the remote repo. How can I stop tracking changes to this dire...
Python - write() versus writelines() and concatenated strings
...thon. I am going through the lessons and ran into a problem where I had to condense a great many target.write() into a single write() , while having a "\n" between each user input variable(the object of write() ).
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What's the difference between an exclusive lock and a shared lock?
According to wikipedia,
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What are “first class” objects?
When are objects or something else said to be "first class" in a given programming language, and why? In what do they differ from languages where they are not?
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What is a “context bound” in Scala?
One of the new features of Scala 2.8 are context bounds. What is a context bound and where is it useful?
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What's the longest possible worldwide phone number I should consider in SQL varchar(length) for phon
What's the longest possible worldwide phone number I should consider in SQL varchar(length) for phone.
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