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How to migrate back from initial migration in Django 1.7?
...lt;app> zero
This clears <app> from migration history and drops all tables of <app>
See django docs for more info.
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Python: access class property from string [duplicate]
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answered Oct 10 '16 at 4:01
YasYas
2,9642626 silver badges2020 bronze badges
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App Inventor 2 EV3超声波传感器教程 · App Inventor 2 中文网
...接.Click() {
蓝牙客户端1.Secure = true
蓝牙客户端1.Connect(10)
}
when 蓝牙客户端1.Connect(设备名, 地址) {
if textContains(设备名, "EV3") {
标签_状态.Text = "✅ 已连接EV3"
EV3超声波传感器1.BluetoothClient = 蓝牙客户端1
EV3超声波传感器...
Why does Eclipse automatically add appcompat v7 library support whenever I create a new project?
Why does Eclipse automatically add appcompat v7 library support whenever I create a new project?
10 Answers
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When is std::weak_ptr useful?
...want to keep them in memory, so you hold a strong pointer to them. Periodically, you scan the cache and decide which objects have not been accessed recently. You don't need to keep those in memory, so you get rid of the strong pointer.
But what if that object is in use and some other code holds a s...
Code coverage with Mocha
...ul is. Try the following, after you get your mocha tests to pass:
npm install nyc
Now, simply place the command nyc in front of your existing test command, for example:
{
"scripts": {
"test": "nyc mocha"
}
}
sha...
How do you determine the size of a file in C?
...out since the question didn't specify an OS.
– Drew Hall
Aug 2 '10 at 21:54
1
You could probably ...
Get encoding of a file in Windows
This isn't really a programming question, is there a command line or Windows tool (Windows 7) to get the current encoding of a text file? Sure I can write a little C# app but I wanted to know if there is something already built in?
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How to open a new window on form submit
...indow.aspx"
onsubmit="window.open('about:blank','print_popup','width=1000,height=800');">
The trick is to match the target attribute on the <form> tag with the second argument in the window.open call in the onsubmit handler.
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How to replace multiple strings in a file using PowerShell
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answered Aug 4 '10 at 7:10
dahlbykdahlbyk
63.7k88 gold badges9494 silver badges119119 bronze badges
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