大约有 38,000 项符合查询结果（耗时：0.0551秒） [XML]
Is it necessary to write HEAD, BODY and HTML tags?
...
|
show 5 more comments
80
...
Select top 10 records for each category
...rs WHERE Rank <= 10
If your RankCriteria has ties then you may return more than 10 rows and Matt's solution may be better for you.
share
|
improve this answer
|
follow
...
Why do Python's math.ceil() and math.floor() operations return floats instead of integers?
...'>
>>> type(math.ceil(3.1))
<class 'int'>
You can find more information in PEP 3141.
share
|
improve this answer
|
follow
|
...
Show or hide element in React
...ed reviewing. I went with the intended answer and that was neat and 'felt' more react like. However I was unable to set initial states and anything useful on an unmounted component. I am looking at using css to hide things instead. Listeners on unmounted components will silently fail this has caused...
How to change past commit to include a missed file?
...
|
show 4 more comments
275
...
Caveats of select/poll vs. epoll reactors in Twisted
...that's roughly twice as expensive as selecting on a single fd, 50. Adding more fds below the highest isn't quite free, so it's a little more complicated than this in practice, but this is a good first approximation for most implementations.
The cost of epoll is closer to the number of file descrip...
How to rename a file using Python
...rename structure we want:
p.rename(Path(p.parent, new_file_name + ext))
More shortly to showcase its simplicity:
Python 3.6+:
from pathlib import Path
p = Path(some_path)
p.rename(Path(p.parent, f"{p.stem}_1_{p.suffix}"))
Versions less than Python 3.6 use the string format method instead:
f...
C# Object Pooling Pattern implementation
...such as Newtonsoft.Json's JSON serializer. You can read this blog post for more information on how Newtonsoft.Json is doing this.
Object Pooling in Microsoft Roslyn C# Compiler
The new Microsoft Roslyn C# compiler contains the ObjectPool type, which is used to pool frequently used objects which wo...
What's the difference between VARCHAR and CHAR?
...
|
show 2 more comments
123
...
When should a class be Comparable and/or Comparator?
...
@mel3kings - Link is no more accessible.
– Gaurav
Nov 17 '18 at 7:15
add a comment
|
...