大约有 47,000 项符合查询结果(耗时:0.0437秒) [XML]
ERROR: permission denied for sequence cities_id_seq using Postgres
...
384
Since PostgreSQL 8.2 you have to use:
GRANT USAGE, SELECT ON SEQUENCE cities_id_seq TO www;
...
Node JS Error: ENOENT
...
89
"/tmp/test.jpg" is not the correct path – this path starts with / which is the root directory...
Copy all files with a certain extension from all subdirectories
... |
edited Jun 4 '15 at 8:23
answered Mar 25 '13 at 14:10
...
Nested JSON objects - do I have to use arrays for everything?
...sSLaks
771k161161 gold badges17711771 silver badges18631863 bronze badges
add a comment
|
...
How do I create an average from a Ruby array?
...
Try this:
arr = [5, 6, 7, 8]
arr.inject{ |sum, el| sum + el }.to_f / arr.size
=> 6.5
Note the .to_f, which you'll want for avoiding any problems from integer division. You can also do:
arr = [5, 6, 7, 8]
arr.inject(0.0) { |sum, el| sum + el } / ...
How to loop through all but the last item of a list?
... |
edited Sep 23 '15 at 8:47
slhck
29.1k2323 gold badges121121 silver badges162162 bronze badges
answe...
How do I return rows with a specific value first?
...d me in MsSQL
– Rexxo
Sep 12 '13 at 8:46
That actually works in any SQL database (and is a much cleaner solution than ...
What is Data URI support like in major email client software?
...binary data in HTML, and browser support is well documented on the web. (IE8 was the first version of IE to support Data URI, with a max 32 KB size per URI; other major browsers have supported it even longer.)
...
Adjust UIButton font size to width
...
Albert Renshaw
14.7k1717 gold badges8787 silver badges169169 bronze badges
answered May 30 '11 at 17:07
elibudelibud
...
How to view the Folder and Files in GAC?
...
answered Feb 29 '12 at 11:28
sllsll
55.4k1919 gold badges9797 silver badges147147 bronze badges
...