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How can I add CGPoint objects to an NSArray the easy way?
I have about 50 CGPoint objects that describe something like a "path", and I want to add them to an NSArray. It's going to be a method that will just return the corresponding CGPoint for an given index. I don't want to create 50 variables like p1 = ...; p2 = ..., and so on. Is there an easy way that...
Bind TextBox on Enter-key press
The default databinding on TextBox is TwoWay and it commits the text to the property only when TextBox lost its focus.
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Django - filtering on foreign key properties
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This has been possible since the queryset-refactor branch landed pre-1.0. Ticket 4088 exposed the problem. This should work:
Asset.objects.filter(
desc__contains=filter,
project__name__contains="Foo").order_by("desc")
The Django Many-to-one documentation has this and oth...
Why can't we have static method in a (non-static) inner class?
... I know an inner class is associated with an instance of its outer class and I know that it's kinda useless that we become able to declare static members within an inner class but I am still asking why not an inner class can declare static members?
– Kareem
S...
Diff two tabs in Vim
Scenario: I have opened Vim and pasted some text. I open a second tab with :tabe and paste some other text in there.
4 An...
How do I correctly clean up a Python object?
__del__(self) above fails with an AttributeError exception. I understand Python doesn't guarantee the existence of "global variables" (member data in this context?) when __del__() is invoked. If that is the case and this is the reason for the exception, how do I make sure the object destructs...
Why does csvwriter.writerow() put a comma after each character?
This code opens the url and appends the /names at the end and opens the page and prints the string to test1.csv :
3 Answ...
IIS7 Overrides customErrors when setting Response.StatusCode?
...Code to whatever is appropriate. For example, if I make a custom 404 page and name it 404.aspx, I could put <% Response.StatusCode = 404 %> in the contents in order to make it have a true 404 status header.
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How can I select the first day of a month in SQL?
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Here is an explanation on why and how this works.
– RubberDuck
Oct 15 '14 at 19:24
35
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What is lexical scope?
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I understand them through examples. :)
First, lexical scope (also called static scope), in C-like syntax:
void fun()
{
int x = 5;
void fun2()
{
printf("%d", x);
}
}
Every inner level can access its outer l...