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Interface vs Abstract Class (general OO)
...ay accelerate shows the contract nature. what is contract nature? why this word contract introduced whenever we talk about interface?
– overexchange
Nov 11 '14 at 18:44
...
Is JavaScript an untyped language?
...o use "untyped" to describe a language whose formal specification uses the word "type" and says that it has seven types (Undefined, Null, Number, String, Boolean, Symbol, and Object) is really confusing. Most people do not want to distinguish this notion of type from the PLT def.
...
UIView frame, bounds and center
...nds of the receiver are not clipped. The default value is
NO.
In other words, if a view's frame is (0, 0, 100, 100) and its subview is (90, 90, 30, 30), you will see only a part of that subview. The latter won't exceed the bounds of the parent view.
masksToBounds is equivalent to clipsToBounds....
Why does NULL = NULL evaluate to false in SQL server
... caused me many errors. I do understand the IS NULL and IS NOT NULL keywords are the correct way to do it. But why does SQL server behave this way?
...
c# open a new form then close the current form?
... describes their types, the types are not given (Someone please correct my wording if need be). // Overall its just a tricky way to not have to declare an entire function (event handler) outside of the current one that handles Form2.Closed event.
– KDecker
Mar ...
In C, do braces act as a stack frame?
... p = d;
}
/* Can I access p[0] here? */
return;
}
(In other words: is the compiler allowed to deallocate d, even if in practice most don't?).
The answer is that the compiler is allowed to deallocate d, and accessing p[0] where the comment indicates is undefined behaviour (the program...
Vertically align text to top within a UILabel
... This answer is unnecessarily complicated and it is using a "word around". Please see suggestion below of simply changing the vertical content hugging priority. Doesn't require any code...
– beetree
Jan 23 '15 at 1:45
...
Why isn't sizeof for a struct equal to the sum of sizeof of each member?
...and padding so that the structure comes out to an even number of bytes (or words) on your platform. For example in C on Linux, the following 3 structures:
#include "stdio.h"
struct oneInt {
int x;
};
struct twoInts {
int x;
int y;
};
struct someBits {
int x:2;
int y:6;
};
int main ...
Python “raise from” usage
...hen use raise ... from None to set __suppress_context__ to True.
In other words, Python sets a context on exceptions so you can introspect where an exception was raised, letting you see if another exception was replaced by it. You can also add a cause to an exception, making the traceback explicit ...
Class method decorator with self arguments?
...d_output + "!"
return _impl
class Foo:
@wrapper
def bar(self, word):
return word
f = Foo()
result = f.bar("kitty")
print(result)
Which will print:
kitty!
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