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C语言结构体里的成员数组和指针 - c++1y / stl - 清泛IT社区，为创新赋能！
...de <stdio.h>
struct str{
int len;
char s[0];
};
struct foo {
struct str *a;
};
int main(int argc, char** argv) {
struct foo f={0};
if (f.a->s) {
printf( f.a->s);
...
How to set a stroke-width:1 on only certain sides of SVG shapes?
...tangle.
rect { fill: none; stroke: black; }
.top { stroke-dasharray: 0,50,150 }
.left { stroke-dasharray: 150,50 }
.bottom { stroke-dasharray: 100,50 }
.right { stroke-dasharray: 50,50,100 }
<svg height="300">
<rect x="0.5" y="0.5" width="50" height="50" class="top"/>
...
Getting a map() to return a list in Python 3.x
...
802
Do this:
list(map(chr,[66,53,0,94]))
In Python 3+, many processes that iterate over iterable...
python re.sub group: number after \number
...
330
The answer is:
re.sub(r'(foo)', r'\g<1>123', 'foobar')
Relevant excerpt from the docs:
...
Matplotlib plots: removing axis, legends and white spaces
...
406
I think that the command axis('off') takes care of one of the problems more succinctly than cha...
Javascript parseInt() with leading zeros
...
This is because if a number starts with a '0', it's treated as base 8 (octal).
You can force the base by passing the base as the 2nd parameter.
parseInt("09", 10) // 9
According to the docs, the 2nd parameter is optional, but it's not always assumed to be 10, as y...
What is the most efficient way to create a dictionary of two pandas Dataframe columns?
...Speed comparion (using Wouter's method)
In [6]: df = pd.DataFrame(randint(0,10,10000).reshape(5000,2),columns=list('AB'))
In [7]: %timeit dict(zip(df.A,df.B))
1000 loops, best of 3: 1.27 ms per loop
In [8]: %timeit pd.Series(df.A.values,index=df.B).to_dict()
1000 loops, best of 3: 987 us per loop...
scipy.misc module has no attribute imread?
...n.PngImageFile...
– Allan Ruin
Nov 10 '14 at 9:24
21
It should be Pillow instead of PIL now. Refe...
Adding iOS UITableView HeaderView (not section header)
...ht; }
– panthor314
Aug 26 '16 at 20:01
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show 2 more comments
...
How do I auto-hide placeholder text upon focus using css or jquery?
...|
edited Aug 17 '17 at 8:10
C.d.
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answered Mar 14...