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Fast permutation -> number -> permutation mapping algorithms
...y the number of different permutations. So you can see our encoded numbers completely specify all possible permutations.
Decoding from variable-base
Decoding is similar to converting to binary or decimal. The common algorithm is this:
int number = 42;
int base = 2;
int[] bits = new int[n];
for (...
String isNullOrEmpty in Java? [duplicate]
...str)
StringUtils.isBlank(str) or StringUtils.isNotBlank(str)
from Apache commons-lang.
The difference between empty and blank is : a string consisted of whitespaces only is blank but isn't empty.
I generally prefer using apache-commons if possible, instead of writing my own utility methods, alth...
Regular expression to match balanced parentheses
... edited May 23 '17 at 12:10
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answered Feb 13 '09 at 15:55
FrankFrank
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Parse JSON in TSQL
...e routine for all your JSON. Anyway, i've done it for you here simple-talk.com/sql/t-sql-programming/…
– Phil Factor
Nov 15 '10 at 18:04
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How to get a DOM Element from a JQuery Selector
...urning the DOM element, something is wrong. See the docs here: docs.jquery.com/Core/get#index
– Sixten Otto
Nov 5 '09 at 2:27
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git - Server host key not cached
... when doing a push to github but I can ssh to github and I do have github.com in my known_hosts file.
– Magnus Lindhe
Nov 10 '11 at 20:09
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What does the “@” symbol do in Powershell?
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PowerShell will actually treat any comma-separated list as an array:
"server1","server2"
So the @ is optional in those cases. However, for associative arrays, the @ is required:
@{"Key"="Value";"Key2"="Value2"}
Officially, @ is the "array operator." You ...
How to grab substring before a specified character jQuery or JavaScript
I am trying to extract everything before the ',' comma. How do I do this in JavaScript or jQuery? I tried this and not working..
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Xcode is not currently available from the Software Update server
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You can download the command line tools for OS X Mavericks manually from here:
https://developer.apple.com/downloads/index.action?name=for%20Xcode
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Configuring user and password with Git Bash
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