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How to get all possible combinations of a list’s elements?
I have a list with 15 numbers in, and I need to write some code that produces all 32,768 combinations of those numbers.
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Is there a regular expression to detect a valid regular expression?
...group start
(?:
(?:[^?+*{}()[\]\\|]+ # literals and ^, $
| \\. # escaped characters
| \[ (?: \^?\\. | \^[^\\] | [^\\^] ) # character classes
(?: [^\]\\]+ | \\. )* \]
| \( (?:\?[:=!]|\?<[=!]|\?>)? (?1)?? ...
How can I perform a culture-sensitive “starts-with” operation from the middle of a string?
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I'll consider the problem of many<->one/many casemappings first and separately from handling different Normalization forms.
For example:
x heiße y
^--- cursor
Matches heisse but then moves cursor 1 too much. And:
x heisse y
^--- cursor
Matches heiße but then moves cursor 1 to...
How does Google calculate my location on a desktop?
... Maps, when clicked (without being logged into my Google Account) using standard Wi Fi to my own personal router and a normal internet connection to my ISP, it somehow manages to pinpoint my exact location with a 100% accuracy (at this moment in time).
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Coding Katas for practicing the refactoring of legacy code
...ecent months. I believe they are a great way to hone my programming skills and improve the quality of the code I write on the job.
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Regular expression \p{L} and \p{N}
I am new to regular expressions and have been given the following regular expression:
2 Answers
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Is C++14 adding new keywords to C++?
The C++ Standards Committee tends to shy away from adding new keywords to the language, yet with C++11 that was not the case. Some examples:
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Installing Python packages from local file system folder to virtualenv with pip
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It do help. And we can use -i option of pip to treat it as a local PyPI.
– diabloneo
Jun 12 '15 at 7:37
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When are you truly forced to use UUID as part of the design?
...ur major UUID versions:
Version 4 UUIDs are essentially just 16 bytes of randomness pulled from a cryptographically secure random number generator, with some bit-twiddling to identify the UUID version and variant. These are extremely unlikely to collide, but it could happen if a PRNG is used or if ...
How to escape braces (curly brackets) in a format string in .NET
...";
string v = String.Format(" foo {{{0}}}", t);
To output a { you use {{ and to output a } you use }}.
or Now, you can also use c# string interpolation like this (feature available in C# 6.0)
Escaping Brackets: String Interpolation $(""). it is new feature in C# 6.0
var inVal = "1, 2, 3";
var o...