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how to use ng-option to set default value of select element
... your array of objects are complex like:
$scope.friends = [{ name: John , uuid: 1234}, {name: Joe, uuid, 5678}];
And your current model was set to something like:
$scope.user.friend = {name:John, uuid: 1234};
It helped to use the track by function on uuid (or any unique field), as long as the ...
Boost.Asio的简单使用(Timer,Thread,Io_service类) - C/C++ - 清泛网 - 专注C/C++及内核技术
...造出void(const boost::asio::error&)形式的函数.
注意,这里没有指定boost::asio::placeholders::error占位符,因为这个print成员函数没有接受一个error对象作为参数.
timer_.async_wait(boost::bind(&printer::print, this));
在类的折构函数中我们输出最后一...
How to speed up insertion performance in PostgreSQL
...
If you happend to insert colums with UUIDs (which is not exactly your case) and to add to @Dennis answer (I can't comment yet), be advise than using gen_random_uuid() (requires PG 9.4 and pgcrypto module) is (a lot) faster than uuid_generate_v4()
=# explain anal...
Vsphere 6 集群上 安装 oracle rac 遇到的共享磁盘故障 - 数据库(内核) - ...
...示 不能访问物理存储
第一次死机
对比互联网上搜索到的方法对比 发现SCSI总线不一样。
参考文档http://www.doc88.com/p-5416264066182.html
按照网上的方法，修改SCSI 控制1的总线为LSI Logic 并行。修改好后，开启虚拟机的电源...
Rails 4: List of available datatypes
...
For Postgres there is additionally a uuid type which can be used as normal field like t.uuid :name... or as primary key like create_table :users, id: :uuid do... or e.g. t.primary_key :id, :uuid, :default => 'uuid_generate_v1()'
– TNT
...
从源代码剖析Mahout推荐引擎 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...考的用户。
近邻算法分为2种：
NearestNUserNeighborhood:指定N的个数，比如，选出前10最相似的用户。
ThresholdUserNeighborhood:指定比例，比如，选择前10%最相似的用户。
6. 推荐算法工具集
推荐算法是以Recommender作为基础的父类...
eclipse cdt 运行程序时添加依赖库路径 - C/C++ - 清泛网 - 专注C/C++及内核技术
...库和可执行文件在同一目录下，如果不使用 LD_LIBRARY_PATH 指定库路径（即当前目录）的话，仍然会报加载不到依赖库的错误。那么Eclipse CDT也是类似，可 我们知道Linux即使依赖库和可执行文件在同一目录下，如果不使用 LD_LIBRARY_...
Mocking static methods with Mockito
...ception occurred while fetching localhost address", e);
return UUID.randomUUID().toString();
}
}
}
My test class:
@RunWith(PowerMockRunner.class)
@PrepareForTest(SmokeRouteBuilder.class)
public class SmokeRouteBuilderTest {
@Test
public void testSmokeMessageId_exce...
MFC 的SetWindowPos 用法 - C/C++ - 清泛网 - 专注C/C++及内核技术
...cx、cy分别是窗口的x和y坐标、宽和高度。hWndInsertAfter用来指定窗口的Z位置（或称Z顺序）。如果你经常接触3D方面的软件，你就知道Z代表深度。这个参数接受5种值：HWND_BOTTOM、 HWND_NOTOPMOST、HWND_TOP、HWND_TOPMOST或者另一个窗口的句...
Add a reference column migration in Rails 4
...cument if someone has the same problem...
In my situation I've been using :uuid fields, and the above answers does not work to my case, because rails 5 are creating a column using :bigint instead :uuid:
add_reference :uploads, :user, index: true, type: :uuid
Reference: Active Record Postgresql UUID...