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Forward declaration of nested types/classes in C++
...:Nested; // But this doesn't work.
My workaround was:
class IDontControl_Nested; // Forward reference to distinct name.
Later when I could use the full definition:
#include <idontcontrol.h>
// I defined the forward ref like this:
class IDontControl_Nested : public IDontControl::Nested
{...
Start may not be called on a promise-style task. exception is coming
...s already started the task before giving it to you. You should only ever call Start on a task that you create by calling its constructor, and you shouldn't even do that unless you have a compelling reason to not start the task when you create it; if you want it started right away you should use Tas...
How do I set the value property in AngularJS' ng-options?
...ck by obj.value">
</select>
How to remember this ugly stuff
To all the people who are having hard time to remember this syntax form: I agree this isn't the most easiest or beautiful syntax. This syntax is kind of an extended version of Python's list comprehensions and knowing that helps ...
Group by with multiple columns using lambda
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var query = source.GroupBy(x => new { x.Column1, x.Column2 });
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Why am I getting an OPTIONS request instead of a GET request?
it does an OPTIONS request to that URL, and then the callback is never called with anything.
10 Answers
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AngularJs event to call after content is loaded
I have a function which I want to call after page content is loaded. I read about $viewContentLoaded and it doesn't work for me. I am looking for something like
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ReactJS render string with non-breaking spaces
... contain characters such as &.
It also contains spaces. I want to replace all spaces with &nbsp; .
6 Answers
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Swift class introspection & generics
...RROR :(
let my_obj = MyClassRef()
Hmm… the error says:
Playground execution failed: error: :16:1: error: constructing an object of class type 'X' with a metatype value requires an '@required' initializer
Y().me()
^
<REPL>:3:7: note: selected implicit initializer with type '()'
cla...
custom listview adapter getView method being called multiple times, and in no coherent order
... there is absolutely no guarantee on the order in which getView() will be called nor how many times. In your particular case you are doing the worst thing possible with a ListView by giving it a height=wrap_content. This forces ListView to measure a few children out of the adapter at layout time, to...
How can I check if multiplying two numbers in Java will cause an overflow?
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This is really nice. For those wondering, the reason this works is that for integer n, n > x is the same as n > floor(x). For positive integers division does an implicit floor. (For negative numbers it rounds up instead)
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