大约有 37,000 项符合查询结果（耗时：0.0579秒） [XML]
SQL to find the number of distinct values in a column
...
answered Sep 26 '08 at 19:54
Noah GoodrichNoah Goodrich
22.8k1212 gold badges6161 silver badges9191 bronze badges
...
How to amend a commit without changing commit message (reusing the previous one)?
...
1053
Since git 1.7.9 version you can also use git commit --amend --no-edit to get your result.
Not...
Usage of protocols as array types and function parameters in swift
...ustDarkDust
84k1616 gold badges175175 silver badges209209 bronze badges
1
...
Does Python optimize tail recursion?
...refers to be able to have proper tracebacks:
Tail Recursion Elimination (2009-04-22)
Final Words on Tail Calls (2009-04-27)
You can manually eliminate the recursion with a transformation like this:
>>> def trisum(n, csum):
... while True: # Change recursion to a ...
Removing “NUL” characters
...
105
This might help, I used to fi my files like this:
http://security102.blogspot.ru/2010/04/findre...
How to get the number of days of difference between two dates on mysql?
... the calculation
In your case, you'd use :
mysql> select datediff('2010-04-15', '2010-04-12');
+--------------------------------------+
| datediff('2010-04-15', '2010-04-12') |
+--------------------------------------+
| 3 |
+--------------------------------...
Get form data in ReactJS
...
jbaiterjbaiter
5,31044 gold badges2424 silver badges3434 bronze badges
...
How to insert element as a first child?
..."<div class='child-div'>some text</div>");
Demo
var i = 0;
$(document).ready(function () {
$('.add').on('click', function (event) {
var html = "<div class='child-div'>some text " + i++ + "</div>";
$("#parent-div").prepend(html);
});
});
&...
How to create relationships in MySQL
...
104
If the tables are innodb you can create it like this:
CREATE TABLE accounts(
account_id I...
Python threading.timer - repeat function every 'n' seconds
I want to fire off a function every 0.5 seconds and be able to start and stop and reset the timer. I'm not too knowledgeable of how Python threads work and am having difficulties with the python timer.
...