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Rotating a two-dimensional array in Python
...tual list. So:
rotated = list(reversed(list(zip(*original))))
We can simplify that a bit by using the "Martian smiley" slice rather than reversed()... then we don't need the outer list():
rotated = list(zip(*original))[::-1]
Of course, you could also simply rotate the list clockwise three times. :...
What is an abstract class in PHP?
...nd non-abstract methods, but it must contain at least one abstract method. If a class has at least one abstract method, then the class must be declared abstract.
Note: Traits support the use of abstract methods in order to impose requirements upon the exhibiting class.
Example below :
class ...
pandas resample documentation
...and a section about resampling.
Note that there isn't a list of all the different how options, because it can be any NumPy array function and any function that is available via groupby dispatching can be passed to how by name.
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When should static_cast, dynamic_cast, const_cast and reinterpret_cast be used?
...se. That is without the examples, I was still unsure, but with them, I am now sure about what the other answers mean.
– Solx
Apr 29 '14 at 14:41
1
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Setting Vim whitespace preferences by filetype
...ndent based on the size of tabstop, and then spaces after that. Of course, if expandtab is on, all the tabs that get inserted are converted to spaces. stackoverflow.com/questions/1562336/… might help further. Without expand tab, Peter's answer would insert tabs that are 2 chars wide, not spaces.
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Is there a difference between single and double quotes in Java?
Is there a difference between single and double quotes in Java?
4 Answers
4
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Rails 4: before_filter vs. before_action
...action not before_filter . It seems to do the same thing. So what's the difference between these two?
5 Answers
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schema builder laravel migrations unique on two columns
...e generated index names are in the format table_column1_column2...n_unique if anyone is unsure. Dropping the unique constraint would then be referencing that in $table->dropUnique('table_column1_column2...n_unique');
– Jonathan
May 5 '17 at 13:26
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How to convert std::string to lower case?
...no way to know whether the character is lowercase or uppercase otherwise.
If you really hate tolower(), here's a specialized ASCII-only alternative that I don't recommend you use:
char asciitolower(char in) {
if (in <= 'Z' && in >= 'A')
return in - ('Z' - 'z');
return...
Set folder browser dialog start location
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This is however not the same as setting RootFolder. If RootFolder is set, only the specified folder and any subfolders that are beneath it will appear in the dialog box. SelectedPath merely pre-selects the given path.
– Jan Gassen
Jul 31 ...