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How can I truncate a datetime in SQL Server?
...erver than a database server and even if that were false you don't pay $20,000+ per server license for IIS or apache.
The point I'm trying to make is that whenever possible you should do this work at the application level. The only time you should ever find yourself truncating a datetime on Sql ...
When should I use a struct instead of a class?
...as ref parameters whenever it's reasonable to do so. Pass a struct with 4,000 fields as a ref parameter to a method which changes one will be cheaper than passing a struct with 4 fields by value to a method which returns modified version.
– supercat
Jan 2 '13 ...
MySQL - ORDER BY values within IN()
...IELD(). We may have been using it incorrectly or on too big a dataset (~22,000 returned records) but just make sure you do your own benchmarking.
– Joshua Pinter
Sep 23 at 17:10
...
Test if a command outputs an empty string
...r larger outputs the difference may be significant:
$ time [ -z "$(seq 1 10000000)" ]
real 0m2.703s
user 0m2.485s
sys 0m0.347s
Compare it with:
$ time [ $(seq 1 10000000 | wc -c) -eq 0 ]
real 0m0.128s
user 0m0.081s
sys 0m0.105s
And even better:
$ time [ $(seq 1 10000000 | head -...
How to change checkbox's border style in CSS?
...: 0 0 2px #ccc;
}
label:hover span,
label:hover span
{
color: #000;
}
input[type="radio"] + span::before,
input[type="checkbox"] + span::before
{
content: "";
width: 12px;
height: 12px;
margin: 0 4px 0 0;
border: solid 1px #a8a8a8;
line-height: 14px;
...
Can vim monitor realtime changes to a file
... isn't moved by the user for the time specified in 'updatetime' (which is 4000 miliseconds by default) checktime is executed, which checks for changes from outside the file
- call feedkeys("lh"): the cursor is moved once, right and back left. and then nothing happens (... which means, that CursorHol...
Avoid trailing zeroes in printf()
... string based on that. The test harness main() shows this in action:
40.00000000000000000000 -> 40.000
359.01335000000000263753 -> 359.013
-359.00999000000001615263 -> -359.010
359.00999999999999090505 -> 359.010
3.01357000000000008200 -> 3.014
0.11111111099999999852 -> ...
“java.lang.OutOfMemoryError : unable to create new native Thread”
...to be able to control what happens in your application. Why do you have 32000 threads active at once?
– Thorbjørn Ravn Andersen
May 28 '13 at 10:44
...
转：postfix安装Q&A - 更多技术 - 清泛网 - 专注C/C++及内核技术
...E:
Q：
[root@localhost mysql]# mysql -u root password
ERROR 2002 (HY000): Can't connect to local MySQL server through socket /var/lib/mysql/mysql.sock' (2)
A:
在/etc/rc.conf中增加mysql_enable="YES"
QUOTE:
Q：
perl Makefile.PL
make installDBI connect('database=e...
Rails: convert UTC DateTime to another time zone
...use @date.to_time.to_datetime
> @date
=> Tue, 02 Sep 2014 23:59:59 +0000
> @date.class
=> DateTime
> @date.to_time
=> 2014-09-02 12:59:59 -1100
> @date.to_time.to_datetime
=> Tue, 02 Sep 2014 12:59:59 -1100
...