大约有 47,000 项符合查询结果（耗时：0.0537秒） [XML]
List of tuples to dictionary
...
Boris
4,70255 gold badges4242 silver badges5252 bronze badges
answered Jun 29 '11 at 14:36
Sven MarnachSven Ma...
int value under 10 convert to string two digit number
...
i.ToString("00")
or
i.ToString("000")
depending on what you want
Look at the MSDN article on custom numeric format strings for more options: http://msdn.microsoft.com/en-us/library/0c899ak8(VS.71).aspx
...
How to handle exceptions in a list comprehensions?
...
101
There is no built-in expression in Python that lets you ignore an exception (or return alternat...
Can I set max_retries for requests.request?
... this pull request). Currently (requests 1.1), the retries count is set to 0. If you really want to set it to a higher value, you'll have to set this globally:
import requests
requests.adapters.DEFAULT_RETRIES = 5
This constant is not documented; use it at your own peril as future releases could...
Rails mapping array of hashes onto single hash
...g a method call between each element of it.
For example [1, 2, 3].reduce(0, :+) is like saying 0 + 1 + 2 + 3 and gives 6.
In our case we do something similar, but with the merge function, which merges two hashes.
[{:a => 1}, {:b => 2}, {:c => 3}].reduce({}, :merge)
is {}.merge({:a =&g...
How to limit depth for recursive file list?
...
509
Checkout the -maxdepth flag of find
find . -maxdepth 1 -type d -exec ls -ld "{}" \;
Here I u...
Java 8 stream reverse order
...ect[] temp = input.toArray();
return (Stream<T>) IntStream.range(0, temp.length)
.mapToObj(i -> temp[temp.length - i - 1]);
}
Another technique uses collectors to accumulate the items into a reversed list. This does lots of insertions at the front of Ar...
Adding a new array element to a JSON object
...
answered Sep 19 '13 at 1:20
Paul S.Paul S.
55.3k77 gold badges9797 silver badges114114 bronze badges
...
delete map[key] in go?
...
coolaj86
60.2k1414 gold badges8383 silver badges101101 bronze badges
answered Nov 15 '09 at 1:22
user181548user...
Automatically plot different colored lines
...f colors. For example:
cc=hsv(12);
figure;
hold on;
for i=1:12
plot([0 1],[0 i],'color',cc(i,:));
end
MATLAB has 13 different named colormaps ('doc colormap' lists them all).
Another option for plotting lines in different colors is to use the LineStyleOrder property; see Defining the Color...