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What does %~dp0 mean, and how does it work?
I find %~dp0 very useful, and I use it a lot to make my batch files more portable.
7 Answers
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List comprehension vs. lambda + filter
I happened to find myself having a basic filtering need: I have a list and I have to filter it by an attribute of the items.
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How do you do a limit query in JPQL or HQL?
In Hibernate 3, is there a way to do the equivalent of the following MySQL limit in HQL?
14 Answers
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Double not (!!) operator in PHP
What does the double not operator do in PHP?
6 Answers
6
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How to delete duplicate lines in a file without sorting it in Unix?
... line is found and then seen[$0] == 2, and so on.
Awk evaluates everything but 0 and "" (empty string) to true. If a duplicate line is placed in seen then !seen[$0] will evaluate to false and the line will not be written to the output.
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Split value from one field to two
I've got a table field membername which contains both the last name and the first name of users. Is it possible to split those into 2 fields memberfirst , memberlast ?
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Interface or an Abstract Class: which one to use?
...ase explain when I should use a PHP interface and when I should use an abstract class ?
11 Answers
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How do I copy an entire directory of files into an existing directory using Python?
Run the following code from a directory that contains a directory named bar (containing one or more files) and a directory named baz (also containing one or more files). Make sure there is not a directory named foo .
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How to compare two files not in repo using git
... use git to diff files where at least one of them is not in the repository by using --no-index:
git diff --no-index file1.txt file2.txt
It doesn't matter which one is tracked by git and which is not - one or both can be untracked, eg:
$ date > x
$ sleep 2
$ date > y
$ git diff --color-word...
Why do we need extern “C”{ #include } in C++?
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C and C++ are superficially similar, but each compiles into a very different set of code. When you include a header file with a C++ compiler, the compiler is expecting C++ code. If, however, it is a C header, then the compiler expects the data contained in the h...