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How to check if object (variable) is defined in R?
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460
You want exists():
R> exists("somethingUnknown")
[1] FALSE
R> somethingUnknown <- 42...
Difference between Visibility.Collapsed and Visibility.Hidden
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433
The difference is that Visibility.Hidden hides the control, but reserves the space it occupies...
Difference between CC, gcc and g++?
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edited Oct 4 '09 at 15:49
answered Oct 4 '09 at 15:24
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With Git, how do I turn off the “LF will be replaced by CRLF” warning
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answered Jun 28 '11 at 4:46
Adam DymitrukAdam Dymitruk
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How to unpack and pack pkg file?
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abarnertabarnert
297k3232 gold badges472472 silver badges564564 bronze badges
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Why is Python 3.x's super() magic?
...class Foo(Bar):
def baz(self):
return super(Foo, self).baz() + 42
Spam = Foo
Foo = something_else()
Spam().baz() # liable to blow up
The same applies to using class decorators where the decorator returns a new object, which rebinds the class name:
@class_decorator_returning_new_cla...
What is the difference (if any) between Html.Partial(view, model) and Html.RenderPartial(view,model)
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40
no, the difference is the return type, as SLaks said. This is non-trivial. Performance-wise, it's been claimed that rendering directly to...
Are static class instances unique to a request or a server in ASP.NET?
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149
Your static classes and static instance fields are shared between all requests to the applicati...
Is effective C++ still effective?
...ctor parameter-independent code out of
templates? (Items 13, 22, 35, and 44.) Yes, yes, yes, yes! My goal has
always been for Effective C++'s table of contents to summarize the
advice in the book, and that summary remains just as applicable to
C++0x development as to “traditional” C++ de...