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CommandError: You must set settings.ALLOWED_HOSTS if DEBUG is False
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Try
ALLOWED_HOSTS = ['*']
Less secure if you're not firewalled off or on a public LAN, but it's what I use and it works.
EDIT: Interestingly enough I've been needing to add this to a few of my 1.8 projects even when DEBUG = True. Very unsure why.
EDIT: This is ...
Event listener for when element becomes visible?
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Javascript events deal with User Interaction, if your code is organised enough you should be able to call the initialising function in the same place where the visibility changes (i.e. you shouldn't change myElement.style.display on many places, instead, call a function/...
How to create a WPF UserControl with NAMED content
... }
public string Heading { get; set; }
}
then use a style to specify the contents
<Style TargetType="control:MyFunkyControl">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="control:MyFunkyContainer">
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Erasing elements from a vector
...in), vec.end());
What happens is that remove compacts the elements that differ from the value to be removed (number_in) in the beginning of the vector and returns the iterator to the first element after that range. Then erase removes these elements (whose value is unspecified).
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ZeroMQ实例-使用ZMQ(ZeroMQ)进行局域网内网络通信 - C/C++ - 清泛网 - 专注C/C++及内核技术
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//创建context，zmq的socket 需要在context上进行创建
if((pCtx = zmq_ctx_new()) == NULL)
{
return 0;
}
//创建zmq socket ，socket目前有6中属性 ，这里使用dealer方式
//具体使用方式请参考zmq官方文档（zmq手册）
if((p...
When to use the brace-enclosed initializer?
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I think the following could be a good guideline:
If the (single) value you are initializing with is intended to be the exact value of the object, use copy (=) initialization (because then in case of error, you'll never accidentally invoke an explicit constructor, which gene...
How do I make XAML DataGridColumns fill the entire DataGrid?
...in XAML (not Silverlight) with resizable columns, the DataGrid will expand if the user resizes the screen.
10 Answers
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What does LINQ return when the results are empty
... about LINQ query. Normally a query returns a IEnumerable<T> type. If the return is empty, not sure if it is null or not. I am not sure if the following ToList() will throw an exception or just a empty List<string> if nothing found in IEnumerable result?
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count vs length vs size in a collection
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Size() tends to refer to the size of the collection, often this can be different from the length in cases like vectors (or strings), there may be 10 characters in a string, but storage is reserved for 20. It also may refer to number of elements - check source/documentation.
Capacity() - used to ...
jQuery - If element has class do this
I need an jQuery script that will see if any element has an specific class and do an action like change position.
1 Answer
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