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Safely override C++ virtual functions
...ake the compiler check if the function I declared in the derived class actually overrides a function in the base class? I would like to add some macro or something that ensures that I didn't accidentally declare a new function, instead of overriding the old one.
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MongoDB drop every database
..."dropping db " + db.getName() );
db.dropDatabase();
}
save it to dropall.js and then execute:
mongo dropall.js
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Java regex email
First of all, I know that using regex for email is not recommended but I gotta test this out.
20 Answers
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Using OR in SQLAlchemy
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From the tutorial:
from sqlalchemy import or_
filter(or_(User.name == 'ed', User.name == 'wendy'))
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How to open a new tab using Selenium WebDriver?
...ow. Obviously, you'd need to keep track of the window name(s) as normal to allow switching between them.
– Mark Rowlands
Jul 16 '13 at 15:42
1
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App Inventor 2 PopupMenu与列表选择器自定义教程 · App Inventor 2 中文网
...{
// 动态设置选项
var 动态列表 = 微数据库1.GetValue("menu_items", [])
列表选择器1.Elements = 动态列表
}
when 列表选择器1.AfterPicking {
标签_结果.Text = "你选择了：" + 列表选择器1.Selection
}
动态文字
ListPicker的元...
How to create a density plot in matplotlib?
...with R. This is because gaussian_kde tries to infer the bandwidth automatically. You can play with the bandwidth in a way by changing the function covariance_factor of the gaussian_kde class. First, here is what you get without changing that function:
However, if I use the following code:
import...
AngularJS and its use of Dollar Variables
...="n = { visible: 'foo', $ignore: 'bar' };">{{ n }}</div>
Additionally when adding an explicit watcher on a scope object, changes to properties with a leading dollar sign of this object will not trigger the watcher. See this updated fiddle.
angular.equals() ignores keys prefixed with $.
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串口通信器使用指导 · App Inventor 2 中文网
...计时启用：假，始终计时：假
按钮
按钮_打开、按钮_发送、按钮_关闭
标签
标签_状态、标签_发送、标签_接收
完整代码块
帧为 A5 + 01 + 两字节数值 1500 + SUM8，共 5 字节...
Can I set max_retries for requests.request?
..., predating the release of requests 1.2.1:
The requests library doesn't really make this configurable, nor does it intend to (see this pull request). Currently (requests 1.1), the retries count is set to 0. If you really want to set it to a higher value, you'll have to set this globally:
import re...