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Why is it slower to iterate over a small string than a small list?
...hon2 -m timeit '[x for x in ["a", "b", "c"]]'
1000000 loops, best of 3: 0.212 usec per loop
Let's explain the difference between the versions. I'll examine the compiled code.
For Python 3:
import dis
def list_iterate():
[item for item in ["a", "b", "c"]]
dis.dis(list_iterate)
#>>>...
When should I use nil and NULL in Objective-C?
...e Programming Topics.
– Rob
Nov 17 '12 at 15:13
"The main difference is that you can send messages to nil" - you can s...
What does the property “Nonatomic” mean?
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Jesse RusakJesse Rusak
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How do I erase an element from std::vector by index?
...ector<int> vec;
vec.push_back(6);
vec.push_back(-17);
vec.push_back(12);
// Deletes the second element (vec[1])
vec.erase(vec.begin() + 1);
Or, to delete more than one element at once:
// Deletes the second through third elements (vec[1], vec[2])
vec.erase(vec.begin() + 1, vec.begin() + 3...
Greenlet Vs. Threads
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edited May 23 '17 at 12:34
Community♦
111 silver badge
answered Mar 24 '13 at 7:47
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Camera orientation issue in Android
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answered May 25 '11 at 12:21
ramzramz
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Check for installed packages before running install.packages() [duplicate]
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edited Feb 18 '12 at 14:02
Sacha Epskamp
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What is the difference between parseInt(string) and Number(string) in JavaScript? [duplicate]
...
parseInt("123qwe")
returns 123
Number("123qwe")
returns NaN
In other words parseInt() parses up to the first non-digit and returns whatever it had parsed. Number() wants to convert the entire string into a number, which can also ...
What is the single most influential book every programmer should read? [closed]
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share
edited Feb 21 '12 at 21:02
community wiki
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Input widths on Bootstrap 3
...ing 'col-lg-1', the logic you're employing is:
IF SCREEN WIDTH < 'lg' (1200px by default)
USE DEFAULT BLOCK BEHAVIOUR (width=100%)
ELSE
APPLY 'col-lg-1' (~95px)
See Bootstrap 3 grid system for more info. I hope I was clear otherwise let me know and I'd elaborate.
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