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RegEx for matching UK Postcodes
... ^^
Problem 3 - Improper Character Set
See regex in use here.
^([Gg][Ii][Rr] 0[Aa]{2})|((([A-Za-z][0-9]{1,2})|(([A-Za-z][A-Ha-hJ-Yj-y][0-9]{1,2})|(([AZa-z][0-9][A-Za-z])|([A-Za-z][A-Ha-hJ-Yj-y][0-9]?[A-Za-z])))) [0-9][A-Za-z]{2})$
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c++ boost::multi_index composite keys efficiency - c++1y / stl - 清泛IT社区，为创新赋能！
...n false;
return v1.z<v2.z;
}
};
typedef std::set<element,element_cmp> set_t;composite_key automatically generates equivalent code to that in element_cmp::operator(), and additionally allows for lookup on just the first n keys, but the underlying data structure doe...
Loading and parsing a JSON file with multiple JSON objects
I am trying to load and parse a JSON file in Python . But I'm stuck trying to load the file:
3 Answers
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Import CSV to SQLite
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Why are you setting .mode? Isn't that only for output?
– Alan
Jun 3 '16 at 17:51
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LINQ Using Max() to select a single row
...> g.Key).First().First();
The first First() gets the first group (the set of rows with the largest status); the second First() gets the first row in that group.
If the status is always unqiue, you can replace the second First() with Single().
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React JSX: selecting “selected” on selected option
In a React component for a <select> menu, I need to set the selected attribute on the option that reflects the application state.
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Remove everything after a certain character
Is there a way to remove everything after a certain character or just choose everything up to that character? I'm getting the value from an href and up to the "?", and it's always going to be a different amount of characters.
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Timeout on a function call
...0). Case you have a blocking I/O for 10 processes, using join(10) you have set them to wait all of them max 10 for EACH process that has started. Use daemon flag like this example stackoverflow.com/a/27420072/2480481. Of course u can pass flag daemon=True directly to multiprocessing.Process() functi...
Java String to SHA1
... MessageDigest crypt = MessageDigest.getInstance("SHA-1");
crypt.reset();
crypt.update(password.getBytes("UTF-8"));
sha1 = byteToHex(crypt.digest());
}
catch(NoSuchAlgorithmException e)
{
e.printStackTrace();
}
catch(UnsupportedEncodingException e)...
Get file name from URL
In Java, given a java.net.URL or a String in the form of http://www.example.com/some/path/to/a/file.xml , what is the easiest way to get the file name, minus the extension? So, in this example, I'm looking for something that returns "file" .
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