大约有 46,000 项符合查询结果(耗时:0.0421秒) [XML]
How to unstash only certain files?
...
481
As mentioned below, and detailed in "How would I extract a single file (or changes to a file) fr...
Count with IF condition in MySQL query
...
SELECT
ccc_news . * ,
SUM(if(ccc_news_comments.id = 'approved', 1, 0)) AS comments
FROM
ccc_news
LEFT JOIN
ccc_news_comments
ON
ccc_news_comments.news_id = ccc_news.news_id
WHERE
`ccc_news`.`category` = 'news_layer2'
AND `ccc_news`.`status` = 'Active'
G...
How do I retrieve the number of columns in a Pandas data frame?
...
312
Like so:
import pandas as pd
df = pd.DataFrame({"pear": [1,2,3], "apple": [2,3,4], "orange": [...
Pip freeze vs. pip list
...
111
When you are using a virtualenv, you can specify a requirements.txt file to install all the de...
SVG gradient using CSS
...ape-rendering: crispEdges;
fill: url(#MyGradient);
}
<svg width="100" height="50" version="1.1" xmlns="http://www.w3.org/2000/svg">
<style type="text/css">
rect{fill:url(#MyGradient)}
</style>
<defs>
<linearGradient id="MyGradi...
How to get the name of the calling method?
...
213
puts caller[0]
or perhaps...
puts caller[0][/`.*'/][1..-2]
...
Why does ~True result in -2?
...
int(True) is 1.
1 is:
00000001
and ~1 is:
11111110
Which is -2 in Two's complement1
1 Flip all the bits, add 1 to the resulting number and interpret the result as a binary representation of the magnitude and add a negative sign (s...
What is AssemblyInfo.cs used for?
... http://social.msdn.microsoft.com/Forums/en/csharpgeneral/thread/8955449f-71ac-448e-9ee6-5329fceecd3c
share
|
improve this answer
|
follow
|
...