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Rails migration: t.references with alternative name?
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I use Rails 5.1.4 but it doesn't work. When I specify a foreign_key option in the table creation like this ways, it raises an error saying the very table I'm creating doesn't exist... So I suspect it's not really supported by the official API.
– Quv
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What is the difference between Android margin start/end and right/left?
What is difference between Android margin start and right (or margin end and left)?
2 Answers
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How do I set a ViewModel on a window in XAML using DataContext property?
...other people provided (which are good, and correct), there is a way to specify the ViewModel in XAML, yet still separate the specific ViewModel from the View. Separating them is useful for when you want to write isolated test cases.
In App.xaml:
<Application
x:Class="BuildAssistantUI.App"
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Github: error cloning my private repository
... 1.7.2.3. You have to fix the path to bin/curl-ca-bundle.crt. I had to specify the absolute path, using back-slashes:
git config --system http.sslcainfo "C:\Program Files (x86)\git\bin\curl-ca-bundle.crt"
or — not really recommended — you may choose to switch off SSL checks completely by execu...
How do you specify the date format used when JAXB marshals xsd:dateTime?
...ect ( XMLGregorianCalendar ) into an xsd:dateTime element. How can you specify the format of the resulting XML?
5 Answers
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What does int argc, char *argv[] mean?
...argv (argument vector) by convention, but they can be given any valid identifier: int main(int num_args, char** arg_strings) is equally valid.
They can also be omitted entirely, yielding int main(), if you do not intend to process command line arguments.
Try the following program:
#include <io...
Ruby ampersand colon shortcut [duplicate]
In Ruby, I know that if I do:
2 Answers
2
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phpcms 启用手机门户（自动判断手机浏览器） - 更多技术 - 清泛网 - 专注C/...
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另外也可以在手机模板中添加如下js解决：
<script>
try{if(self.location='http://m.xx.com'){
top.location.href='http://m.xx.com/index.php';
}}catch(e){}
</script>
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上述这种，虽然开启了手机访问，...
What causes a java.lang.ArrayIndexOutOfBoundsException and how do I prevent it?
...; array.length; index++)
(That's assuming you need the index, of course. If you can use the enhanced for loop instead, do so.)
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Call a controller function from a directive without isolated scope in AngularJS
...nt scope from within a directive without using isolated scope. I know that if I use isolated scope I can just use "&" in the isolated to access the function on the parent scope, but using isolated scope when it isn't necessary has consequences. Consider the following HTML:
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