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In Python, what is the difference between “.append()” and “+= []”?
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The performance tests here are not correct:
You shouldn't run the profile only once.
If comparing append vs. += [] number of times you should declare append as a local function.
time results are different on different python versions: 64 a...
How do you get the list of targets in a makefile?
... database
-Rr suppresses inclusion of built-in rules and variables
-q only tests the up-to-date-status of a target (without remaking anything), but that by itself doesn't prevent execution of recipe commands in all cases; hence:
-f $(lastword $(MAKEFILE_LIST)) ensures that the same makefile is targe...
How to print Unicode character in Python?
... the screen.
Print a unicode character from a python script:
Put this in test.py:
#!/usr/bin/python
print("here is your checkmark: " + u'\u2713');
Run it like this:
el@apollo:~$ python test.py
here is your checkmark: ✓
If it doesn't show a checkmark for you, then the problem could be elsew...
No generic implementation of OrderedDictionary?
...Entry; } }
}
}
And no implementation would be complete without a few tests (but tragically, SO won't let me post that much code in one post), so I'll have to leave you to write your tests. But, I left a few of them in so that you could get an idea of how it works:
// http://unlicense.org
usi...
Benefit of using Parcelable instead of serializing object
...lippe Breault made a nice article about this, and also added a performance test. developerphil.com/parcelable-vs-serializable
– WonderCsabo
Jul 5 '13 at 16:35
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How to find the statistical mode?
... the pun/ambiguity) "character" not "numeric". And, of course, the need to test for multi-modal distribution would typically require the storing of the sorted table to avoid crunching it anew.
– mjv
Mar 30 '10 at 19:02
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Test whether a Ruby class is a subclass of another class
I would like to test whether a class inherits from another class, but there doesn't seem to exist a method for that.
2 Answ...
Create a pointer to two-dimensional array
...dimensional arrays to functions by reference:
int l_matrix[10][20];
void test(int matrix_ptr[static 10][20]) {
}
int main(void) {
test(l_matrix);
}
Unlike a plain pointer, this hints about array size, theoretically allowing compiler to warn about passing too-small array and spot obvious out...
Set cursor position on contentEditable
...ould work if dropped directly into the body of an html page if you want to test it quickly:
<div id="area" style="width:300px;height:300px;" onblur="onDivBlur();" onmousedown="return cancelEvent(event);" onclick="return cancelEvent(event);" contentEditable="true" onmouseup="saveSelection();" onk...
Difference between fprintf, printf and sprintf?
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You can also do very useful things with vsnprintf() function:
$ cat test.cc
#include <exception>
#include <stdarg.h>
#include <stdio.h>
struct exception_fmt : std::exception
{
exception_fmt(char const* fmt, ...) __attribute__ ((format(printf,2,3)));
char const* what...