大约有 43,000 项符合查询结果（耗时：0.0399秒） [XML]
How to select rows that have current day's timestamp?
...estamp` datetime --- index timestamp
, data VARCHAR(100) NOT NULL
DEFAULT 'Sample data'
, PRIMARY KEY (id)
, INDEX t_IX (`timestamp`, id)
) ;
INSERT INTO test
(`timestamp`)
VALUES
('2013-02-08 00:01:12'),
--- ...
Purge Kafka Topic
...t;zkhost>:2181 --alter --topic <topic name> --config retention.ms=1000
And in newer Kafka releases, you can also do it with kafka-configs --entity-type topics
kafka-configs.sh --zookeeper <zkhost>:2181 --entity-type topics --alter --entity-name <topic name> --add-config reten...
Draw Circle using css alone [duplicate]
...
use a polyfille for ie8 css3pie.com and use border-radius:100%; for responsive circle use padding-bottom:40%; width:40%; height:0; overflow:visible;
– fearis
Jun 29 '15 at 17:20
...
How do I round to the nearest 0.5?
...est 10 = 110
// 105.5 up to nearest 7 = 112
// 105.5 up to nearest 100 = 200
// 105.5 up to nearest 0.2 = 105.6
// 105.5 up to nearest 0.3 = 105.6
//if no rounto then just pass original number back
if (roundto == 0)
{
return passednumber;
}
else
{
...
Vim: faster way to select blocks of text in visual mode
...ge. Many commands are verbs, and vim also has objects and prepositions.
V100G
V100gg
This means "select the current line up to and including line 100."
Text objects are where a lot of the power is at. They introduce more objects with prepositions.
Vap
This means "select around the current p...
How to vertically align elements in ?
...olbar ul li
{
display: table-cell;
height: 100px;
list-style-type: none;
margin: 10px;
vertical-align: middle;
}
.toolbar ul li a {
display:table-cell;
vertical-align: middle;
heig...
One line if statement not working
...
a = <condition> ? <a> : <b>
example:
a = true ? 10 : 100 # a = 10
a = false ? 10 : 100 # a = 100
I hope it helps.
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Array.size() vs Array.length
...ily the number of items in the array:
var a = ['car1', 'car2', 'car3'];
a[100] = 'car100';
a.length; // 101
The length of the array is one more than the highest index.
As stated before Array.size() is not a valid method.
More information
...
What does the clearfix class do in css? [duplicate]
... of the layout". For instance, when an empty container contains a floating 100px x 100px <div>, the <div> will not impart 100px in height to the container.
Unlike position:absolute, it affects the content that surrounds it. Content after the floated element will "wrap" around the elemen...
Simulate limited bandwidth from within Chrome?
...nux, the following command is really useful for this:
trickle -s -d 50 -w 100 firefox
The -s tells the command to run standalone, the -d 50 tells it to limit bandwidth to 50 KB/s, the -w 100 set the peak detection window size to 100 KB. firefox tells the command to start firefox with all of this ...