大约有 4,000 项符合查询结果（耗时：0.0222秒） [XML]
What does 'stale file handle' in Linux mean?
Say I have a terminal open, and through that terminal I have cd 'ed to some directory. Through another terminal, I delete that directory and restore it back from an identical backup. When I try to vim a file from the first terminal, in the same directory, why do I get an error about a stale file ...
Add 10 seconds to a Date
...onds" and the most voted answer is wrong.
– Philipp Gächter
Jun 23 '14 at 7:32
2
...
Remove all elements contained in another array
...ound it, just awesome. Thank you very much!
– Tarvo Mäesepp
Sep 1 '19 at 18:58
add a comment
|
...
UITextField border color
....borderColor=[[UIColor redColor]CGColor];
textField.layer.borderWidth= 1.0f;
For reverting back to the original layout just set border color to clear color,
serverField.layer.borderColor=[[UIColor clearColor]CGColor];
in swift code
textField.layer.borderWidth = 1
textField.laye...
Converting strings to floats in a DataFrame
...rt say a complete string column
In [10]: df = DataFrame(dict(A = Series(['1.0','1']), B = Series(['1.0','foo'])))
In [11]: df
Out[11]:
A B
0 1.0 1.0
1 1 foo
In [12]: df.dtypes
Out[12]:
A object
B object
dtype: object
In [13]: df.convert_objects(convert_numeric=True)
Out[13]...
In which order should floats be added to get the most precise result?
...lt;cmath>
int main()
{
long billion = 1000000000;
double big = 1.0;
double small = 1e-9;
double expected = 2.0;
double sum = big;
for (long i = 0; i < billion; ++i)
sum += small;
std::cout << std::scientific << std::setprecision(1) << big...
Can I change the Android startActivity() transition animation?
...roid"
android:fillAfter="true">
<alpha android:fromAlpha="1.0"
android:toAlpha="0.0"
android:duration="500"/> //Time in milliseconds
</set>
In your finish-class
private void finishTask() {
if("blabbla".equals("blablabla"){
finish();
...
What characters do I need to escape in XML documents?
...ee characters ", ' and > needn't be escaped in text:
<?xml version="1.0"?>
<valid>"'></valid>
Attributes
The safe way is to escape all five characters in attributes. However, the > character needn't be escaped in attributes:
<?xml version="1.0"?>
<valid attri...
Multiprocessing: How to use Pool.map on a function defined in a class?
...or p in proc]
return [p.recv() for (p, c) in pipe]
if __name__ == '__main__':
print parmap(lambda x: x**x, range(1, 5))
share
|
improve this answer
|
follow
...
What is bootstrapping?
I keep seeing "bootstrapping" mentioned in discussions of application development. It seems both widespread and important, but I've yet to come across even a poor explanation of what bootstrapping actually is; rather, it seems as though everyone is just supposed to know what it means. I don't, tho...