大约有 47,000 项符合查询结果（耗时：0.0635秒） [XML]
【BLE技术内幕】BLE技术揭秘 - 创客硬件开发 - 清泛IT论坛，有思想、有深度
...
BLE是低功耗蓝牙的英文缩写（Bluetooth Low Energy），是蓝牙4.0版本起开始支持的新的、低功耗版本的蓝牙技术规范。蓝牙技术联盟（Bluetooth SIG）在2010年发布了跨时代的蓝牙4.0，它并不是蓝牙3.0的简单升级版本，而是全新的技术架...
MySQL - Make an existing Field Unique
...
ALTER IGNORE TABLE mytbl ADD UNIQUE (columnName);
For MySQL 5.7.4 or later:
ALTER TABLE mytbl ADD UNIQUE (columnName);
As of MySQL 5.7.4, the IGNORE clause for ALTER TABLE is removed and
its use produces an error.
So, make sure to remove duplicate entries first as IGNORE keyword...
Keep overflow div scrolled to bottom unless user scrolls up
...
146
This might help you:
var element = document.getElementById("yourDivID");
element.scrollTop = e...
Problems with lib-icu dependency when installing Symfony 2.3.x via Composer
... aptitude install php5-intl // i.e. ubuntu
brew install icu4c // osx
check the extension is enabled and properly configured in php.ini aswell.
( hint: php-cli sometimes uses a different php.ini )
php.ini
extension=intl.so ; *nix
extension=php_...
Convert a number range to another range, maintaining ratio
... |
edited May 11 '14 at 5:14
answered May 30 '09 at 5:52
...
Why doesn't JavaScript have a last method? [closed]
...
TriptychTriptych
180k3131 gold badges140140 silver badges167167 bronze badges
20
...
Get Substring between two characters using javascript
...
453
You can try this
var mySubString = str.substring(
str.lastIndexOf(":") + 1,
str.last...
What is the leading LINQ for JavaScript library? [closed]
...
– Daniel Earwicker
Mar 23 '10 at 8:24
25
I hate that this is the accepted answer. Yeah, sure, it'...
What's the difference between a temp table and table variable in SQL Server?
...If you don't have a unique column, you can use an identity column.) SQL 2014 has non-unique indexes too.
Table variables don't participate in transactions and SELECTs are implicitly with NOLOCK. The transaction behaviour can be very helpful, for instance if you want to ROLLBACK midway through a proc...
Can I get JSON to load into an OrderedDict?
... object_pairs_hook=OrderedDict)
>>> print json.dumps(data, indent=4)
{
"foo": 1,
"bar": 2
}
>>>
Using json.load is done in the same way:
>>> data = json.load(open('config.json'), object_pairs_hook=OrderedDict)
...