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What are “named tuples” in Python?
...n 3.0, although there is a recipe for implementation in Python 2.4.
For example, it is common to represent a point as a tuple (x, y). This leads to code like the following:
pt1 = (1.0, 5.0)
pt2 = (2.5, 1.5)
from math import sqrt
line_length = sqrt((pt1[0]-pt2[0])**2 + (pt1[1]-pt2[1])**2)
Using...
Google Chrome Printing Page Breaks
..."display: block;position: relative;page-break-before:always">Grade <?php echo $grade;?></h7>
– Gavin Simpson
Feb 8 '15 at 7:05
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How to display request headers with command line curl
...Apache
Set-Cookie: UID=b8c37e33defde51cf91e1e03e51657da
Location: noaccess.php
Content-Type: text/html
HTTP/1.1 200 OK
Date: Sat, 29 Dec 2012 15:22:13 GMT
Server: Apache
Content-Type: text/html
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What are copy elision and return value optimization?
...pplied even if copying/moving the object has side-effects.
The following example taken from Wikipedia:
struct C {
C() {}
C(const C&) { std::cout << "A copy was made.\n"; }
};
C f() {
return C();
}
int main() {
std::cout << "Hello World!\n";
C obj = f();
}
Depending on ...
What does functools.wraps do?
... def with_logging(*args, **kwargs):
print(func.__name__ + " was called")
return func(*args, **kwargs)
return with_logging
then when you say
@logged
def f(x):
"""does some math"""
return x + x * x
it's exactly the same as saying
def f(x):
"""does some math"""
...
Are there benefits of passing by pointer over passing by reference in C++?
... func2 passes "by pointer" - no need to look up function definition
func2(&mySprite);
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What does %5B and %5D in POST requests stand for?
...
Not least important is why these symbols occur in url.
See https://www.php.net/manual/en/function.parse-str.php#76792, specifically:
parse_str('foo[]=1&foo[]=2&foo[]=3', $bar);
the above produces:
$bar = ['foo' => ['1', '2', '3'] ];
and what is THE method to separate query vars ...
Portable way to get file size (in bytes) in shell?
... One would guess the portable ls -ln FILE | { read _ _ _ _ size _ && echo "$size"; } needs not fork for the second step of the pipeline, as it uses just built-ins, but Bash 4.2.37 on Linux forks twice (still only one execve, though).
– Palec
Jul...
Get most recent file in a directory on Linux
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@Josir This can be modified to include the datestamp with ls -tl | head -n 1, and it doesn't have to push the whole table through the pipe the way mine does.
– dmckee --- ex-moderator kitten
Nov 14 '14 at 17:23
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Best way to iterate through a Perl array
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@ikegami True to your champion style - great answer :)
– skeetastax
Aug 22 at 1:37
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