大约有 43,200 项符合查询结果（耗时：0.0464秒） [XML]
Get the name of the currently executing method
... name as a string, call __method__.to_s instead.
Note: This requires Ruby 1.8.7.
share
|
improve this answer
|
follow
|
...
How to determine the Boost version on a system?
...
11 Answers
11
Active
...
jQuery deferreds and promises - .then() vs .done()
...
10 Answers
10
Active
...
Regex exactly n OR m times
...
91
There is no single quantifier that means "exactly m or n times". The way you are doing it is fin...
Twitter oAuth callbackUrl - localhost development
...bled recently. http://code.google.com/p/twitter-api/issues/detail?id=534#c1
17 Answers
...
SQL query to select dates between two dates
...
21 Answers
21
Active
...
Maintaining the final state at end of a CSS3 animation
...applied onClick, and, using keyframes, it changes the opacity from 0 to 1 (among other things).
4 Answers
...
Throw an error in a MySQL trigger
...
|
edited May 15 '19 at 1:15
Laurel
5,3621010 gold badges2323 silver badges4545 bronze badges
...
Does MySQL ignore null values on unique constraints?
...ws multiple NULLs in a column with a unique constraint.
CREATE TABLE table1 (x INT NULL UNIQUE);
INSERT table1 VALUES (1);
INSERT table1 VALUES (1); -- Duplicate entry '1' for key 'x'
INSERT table1 VALUES (NULL);
INSERT table1 VALUES (NULL);
SELECT * FROM table1;
Result:
x
NULL
NULL
1
This i...