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理解和配置 Linux 下的 OOM Killer - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...还有位客户抱怨 VPS 经常死机，登陆到终端看了一下，都是常见的 Out of memory 问题。这通常是因为某时刻应用程序大量请求 最近有位 VPS 客户抱怨 MySQL 无缘无故挂掉，还有位客户抱怨 VPS 经常死机，登陆到终端看了一下，都是...
Clear the entire history stack and start a new activity on Android
...fest
Example:
<activity android:name=".activities.A"
android:label="@string/A_title"
android:launchMode="singleTask"/>
<activity android:name=".activities.B"
android:label="@string/B_title"
android:launchMode="singleTask"/>
Extend Application wh...
大数据能否拯救中国足球？ - 资讯 - 清泛网 - 专注C/C++及内核技术
...已达到2亿元。然而，相比此次融资消息，我们更关心的是：创冰这样的公司能否借助大数据帮助中国足球乃至其他体育项目大跨步提升？
当体育遇上大数据
剧创冰科技CEO刘震向第一财经记者表示：“我们是国内唯一拥有独立...
Why doesn't String switch statement support a null case?
...11 has the following note:
The prohibition against using null as a switch label prevents one from writing code that can never be executed. If the switch expression is of a reference type, that is, String or a boxed primitive type or an enum type, then a run-time error will occur if the expression e...
How to place div side by side
...tuation left me with a div going past the border on the bottom because the labels generated are dynamic. The labels are spans cuz that's how ASP renders them. Not having the float:left made only 3 of the divs on the same row. And a using a table is out of the question. Thank you!
...
How to use Morgan logger?
...ndleExceptions: true,
json: false,
level: 'silly',
label: 'default',
},
file: {
filename: 'some/path/where/the/log/file/reside/default.log',
level: 'silly',
json: false,
handleExceptions: true,
},
});
//
// setup logger for categor...
Usage of forceLayout(), requestLayout() and invalidate()
...ate().
invalidate();
requestLayout();
An example of this is when a custom label has its text property changed. The label would change size and thus need to be remeasured and redrawn.
forceLayout()
When there is a requestLayout() that is called on a parent view group, it does not necessary need to r...
What is the difference between Debug and Release in Visual Studio?
...
"Debug" and "Release" are actually just two labels for a whole slew of settings that can affect your build and debugging.
In "Debug" mode you usually have the following:
Program Debug Database files, which allow you to follow the execution of the program quite closel...
使用App Inventor扩展实现多点触控：Rotation Detector · App Inventor 2 中文网
...nvas1, which contains an ImageSprite (ArrowSprite) that we want to rotate. Label1 will show the Arrow’s heading in text format. Heading 0 points to right. We also add a RotationDetector (MyRotationDetector1) as a non-visible component.
The first key part of using Rotation Detector is to associa...
Export specific rows from a PostgreSQL table as INSERT SQL script
..._ident(p_table) || '(';
selquery := 'SELECT array[';
<<label0>>
FOR colrec IN SELECT table_schema, table_name, column_name, data_type
FROM information_schema.columns
WHERE table_name = p_table and table_schema = p_schema
...