大约有 40,000 项符合查询结果（耗时：0.0569秒） [XML]
Better way to set distance between flexbox items
To set the minimal distance between flexbox items I'm using margin: 0 5px on .item and margin: 0 -5px on container. For me it seems like a hack, but I can't find any better way to do this.
...
Sort points in clockwise order?
...
if the set of points is known a priori it only takes O(n*log n) comparisons. If you want to add points in the meantime then you need to keep them in a sorted set such as a balanced binary search tree. In such a case adding a new poi...
How line ending conversions work with git core.autocrlf between different operating systems
...n Stack Overflow as well as git documentation on how the core.autocrlf setting works.
7 Answers
...
Python idiom to return first item or None
I'm sure there's a simpler way of doing this that's just not occurring to me.
23 Answers
...
When should I use Struct vs. OpenStruct?
...s are sloooooow and memory intensive , and don't scale well for large data sets
Creating 1 Mio OpenStructs is ~100x slower than creating 1 Mio Hashes.
start = Time.now
collection = (1..10**6).collect do |i|
{:name => "User" , :age => 21}
end; 1
stop = Time.now
puts "#{stop - start} seco...
CMake unable to determine linker language with C++
...o determine the language of the code correctly you can use the following:
set_target_properties(hello PROPERTIES LINKER_LANGUAGE CXX)
The accepted answer that suggests appending the language to the project() statement simply adds more strict checking for what language is used (according to the do...
Execute a terminal command from a Cocoa app
... There's a small glitch in your answer. NSPipe has a buffer (set at the OS level), which is flushed when it's read. If the buffer fills up, NSTask will hang, and your app will hang too, indefinitely. No error message will appear. This can happen if the NSTask returns a lot of info. The...
Rename Pandas DataFrame Index
...))
In [2]: df
Out[2]:
A B C
0 1 2 3
1 4 5 6
In [3]: df1 = df.set_index('A')
In [4]: df1
Out[4]:
B C
A
1 2 3
4 5 6
You can see the rename on the index, which can change the value 1:
In [5]: df1.rename(index={1: 'a'})
Out[5]:
B C
A
a 2 3
4 5 6
In [6]: d...
Is SHA-1 secure for password storage?
Conclusion: SHA-1 is as safe as anything against preimage attacks, however it is easy to compute, which means it is easier to mount a bruteforce or dictionary attack. (The same is true for successors like SHA-256.) Depending on the circumstances, a hash function which was designed to be computation...
What parameters should I use in a Google Maps URL to go to a lat-lon?
...ly only useful if query is a business or suchlike.
z=
Zoom level. Can be set 19 normally, but in certain cases can go up to 23.
ll=
Latitude and longitude of the map centre point. Must be in that order.
Requires decimal format. Interestingly, you can use this without q, in
which case...