大约有 47,000 项符合查询结果（耗时：0.0458秒） [XML]
Why do all browsers' user agents start with “Mozilla/”?
...
298
It is a long and sad story.
In summary:
Mozilla browser gets released, with User-Agent Mozil...
Filtering a list based on a list of booleans
...i for (i, v) in zip(list_a, fil) if v] #winner
100000 loops, best of 3: 1.98 us per loop
>>> list_a = [1, 2, 4, 6]*100
>>> fil = [True, False, True, False]*100
>>> %timeit list(compress(list_a, fil)) #winner
10000 loops, best of 3: 24.3 us per loop
>>&...
Rotating a two-dimensional array in Python
...
98
Consider the following two-dimensional list:
original = [[1, 2],
[3, 4]]
Lets br...
Which is the preferred way to concatenate a string in Python?
... out = bytearray()
for i in source:
out += i
# 10000 loops, best of 3: 98.5 µs per loop
%%timeit out = ""
for i in source:
out += i
# 10000 loops, best of 3: 161 µs per loop
## Repeat the tests with a larger list, containing
## strings that are bigger than the small string caching
## do...
Colspan all columns
...
Mark AmeryMark Amery
98.8k4848 gold badges336336 silver badges379379 bronze badges
...
What is the purpose of class methods?
... Brandon RhodesBrandon Rhodes
64.6k1515 gold badges9898 silver badges133133 bronze badges
...
In C/C++ what's the simplest way to reverse the order of bits in a byte?
...0,
0x08, 0x88, 0x48, 0xc8, 0x28, 0xa8, 0x68, 0xe8,
0x18, 0x98, 0x58, 0xd8, 0x38, 0xb8, 0x78, 0xf8,
0x04, 0x84, 0x44, 0xc4, 0x24, 0xa4, 0x64, 0xe4,
0x14, 0x94, 0x54, 0xd4, 0x34, 0xb4, 0x74, 0xf4,
0x0c, 0x8c, 0x4c, 0xcc, 0x2c, 0xac, 0x6c, 0xec,
0x1c, 0x9...
Difference between framework vs Library vs IDE vs API vs SDK vs Toolkits? [closed]
...
98
The Car Analogy
IDE: The MS Office of Programming. It's where you type your code, plus some ...
Inverse dictionary lookup in Python
...
98
Your list comprehension goes through all the dict's items finding all the matches, then just re...
Associative arrays in Shell scripts
...
98
Another non-bash 4 way.
#!/bin/bash
# A pretend Python dictionary with bash 3
ARRAY=( "cow:m...