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How to get all subsets of a set? (powerset)
...3,) (1,2) (1,3) (2,3) (1,2,3)"
s = list(iterable)
return chain.from_iterable(combinations(s, r) for r in range(len(s)+1))
Output:
>>> list(powerset("abcd"))
[(), ('a',), ('b',), ('c',), ('d',), ('a', 'b'), ('a', 'c'), ('a', 'd'), ('b', 'c'), ('b', 'd'), ('c', 'd'), ('a', 'b', 'c'...
How to remove “index.php” in codeigniter's path
...ase.
– Sean Vieira
Jan 10 '15 at 18:05
add a comment
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simple HTTP server in Java using only Java SE API
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If you're using Eclipse and get an error like "Access restriction: The type HttpExchange is not accessible due to restriction on required library ...", stackoverflow.com/a/10642163 tells how to disable that access check.
– Samuli Pahaoja
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pandas resample documentation
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edited May 31 '19 at 10:05
answered Jun 8 '13 at 16:20
Ma...
How to make System.out.println() shorter
...stance will provide methods for different messages like info(), warn() and error().
Homemade methods
or simply make a println method of your own and call it:
void println(Object line) {
System.out.println(line);
}
println("Hello World");
IDE keyboard shortcuts
IntelliJ IDEA and NetBeans:
you t...
What is the closest thing Windows has to fork()?
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Note that most of the error checking is missing - e.g. ZwCreateThread returns an NTSTATUS value which can be checked using the SUCCEEDED and FAILED macros.
– BCran
Oct 11 '13 at 9:27
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Can't connect to local MySQL server through socket '/tmp/mysql.sock' (2)
I have installed MySQL server and trying to connect to it, but getting the error:
18 Answers
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Import SQL dump into PostgreSQL database
...ve tried that psql mydatabase < C:\database\db-backup.sql but i get the error Invalid command \database. I also tried with " " around it.
– dazz
Jul 27 '11 at 10:05
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How do I get the path of the Python script I am running in? [duplicate]
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Not so sure about that, here a result from OSX 10.6 NameError: global name '__file__' is not defined
– sorin
Apr 13 '10 at 15:40
17
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Count occurrences of a char in plain text file
... 1100000 occurences of the searched character:
real 0m0.089s
user 0m0.057s
sys 0m0.027s
Time for Vereb answer with echo, cat, tr and bc for the same file:
real 0m0.168s
user 0m0.059s
sys 0m0.115s
Time for Rob Hruska answer with tr, sed and wc for the same file:
real 0m0.465s
u...