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How to convert char to int?
...
285
I'm surprised nobody has mentioned the static method built right into System.Char...
int val =...
JavaScript function similar to Python range()
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89
No, there is none, but you can make one.
JavaScript's implementation of Python's range()
Tryi...
Regular expression to check if password is “8 characters including 1 uppercase letter, 1 special cha
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answered Feb 28 '12 at 7:32
npintinpinti
49.3k55 gold badges6464 silver badges8989 bronze badges
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Rank function in MySQL
...erson VALUES (5, 'Nick', 22, 'M');
INSERT INTO person VALUES (6, 'Kathy', 18, 'F');
INSERT INTO person VALUES (7, 'Steve', 36, 'M');
INSERT INTO person VALUES (8, 'Anne', 25, 'F');
Result:
+------------+------+--------+------+
| first_name | age | gender | rank |
+------------+------+--------+--...
UTF-8: General? Bin? Unicode?
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In general, utf8_general_ci is faster than utf8_unicode_ci, but less correct.
Here is the difference:
For any Unicode character set, operations performed using the _general_ci collation are faster than those for the _unicode_ci collati...
Transpose list of lists
...
How about
map(list, zip(*l))
--> [[1, 4, 7], [2, 5, 8], [3, 6, 9]]
For python 3.x users can use
list(map(list, zip(*l)))
Explanation:
There are two things we need to know to understand what's going on:
The signature of zip: zip(*iterables) This means zip expects an arb...
efficient circular buffer?
... d.append(i)
...
>>> d
deque([10, 11, 12, 13, 14, 15, 16, 17, 18, 19], maxlen=10)
There is a recipe in the docs for deque that is similar to what you want. My assertion that it's the most efficient rests entirely on the fact that it's implemented in C by an incredibly skilled crew that...
How can I change Mac OS's default Java VM returned from /usr/libexec/java_home
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89
I think JAVA_HOME is the best you can do. The command-line tools like java and javac will resp...
Pandas index column title or name
...ex via its name property
In [7]: df.index.name
Out[7]: 'Index Title'
In [8]: df.index.name = 'foo'
In [9]: df.index.name
Out[9]: 'foo'
In [10]: df
Out[10]:
Column 1
foo
Apples 1
Oranges 2
Puppies 3
Ducks 4
...
SQL Server 2008: How to query all databases sizes?
I have MS SQL 2008 R2, 500 databases.
What is the most efficient, easiest and 'modern' way to query all databases sizes.
14...