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When should I use @classmethod and when def method(self)?
...e_static = staticmethod(lambda x: x+1)
In [7]: Foo.some_static(1)
Out[7]: 2
In [8]: Foo().some_static(1)
Out[8]: 2
In [9]: class Bar(Foo): some_static = staticmethod(lambda x: x*2)
In [10]: Bar.some_static(1)
Out[10]: 2
In [11]: Bar().some_static(1)
Out[11]: 2
The main use I've found for it i...
What is the difference between ndarray and array in numpy?
...
232
numpy.array is just a convenience function to create an ndarray; it is not a class itself.
...
Count lines of code in all java classes in Android Studio
...
245
Go to
https://plugins.jetbrains.com/idea/plugin/4509-statistic
and install the latest version
...
Is MATLAB OOP slow or am I doing something wrong?
...
224
I've been working with OO MATLAB for a while, and ended up looking at similar performance issu...
Why does direction of index matter in MongoDB?
... ascending the index might look something like this:
Row A B
1 1 1
2 2 6
3 2 7
4 3 4
5 3 5
6 3 6
7 5 1
A query for A ascending B descending will need to jump around the index out of order to return the rows and will be slower. For example it will return Row 1, 3, 2...
Python module os.chmod(file, 664) does not change the permission to rw-rw-r— but -w--wx----
...ve the same result.
What you are doing is passing 664 which in octal is 1230
In your case you would need
os.chmod("/tmp/test_file", 436)
[Update] Note, for Python 3 you have prefix with 0o (zero oh). E.G, 0o666
sha...
Is there a difference between using a dict literal and a dict constructor?
...
answered Jul 7 '11 at 12:43
John La RooyJohn La Rooy
249k4646 gold badges326326 silver badges469469 bronze badges
...
What is the format specifier for unsigned short int?
...the "%h" modifier:
scanf("%hu", &length);
^
ISO/IEC 9899:201x - 7.21.6.1-7
Specifies that a following d , i , o , u , x , X , or n conversion
specifier applies to an argument with type pointer to short or
unsigned short.
...
conditional unique constraint
...Status = 1 and Count > 0.
http://msdn.microsoft.com/en-us/library/ms188258.aspx
CREATE TABLE CheckConstraint
(
Id TINYINT,
Name VARCHAR(50),
RecordStatus TINYINT
)
GO
CREATE FUNCTION CheckActiveCount(
@Id INT
) RETURNS INT AS BEGIN
DECLARE @ret INT;
SELECT @ret = COUNT(*) FROM Che...
In Maven 2, how do I know from which dependency comes a transitive dependency?
...
132
To add to @David Crow, here's a dependency:tree example from the Maven site:
mvn dependency:tre...