I would like to do the following:
class MyClass {
public:
MyClass() : arr({1,2,3,4,5,6,7,8}) {}
private:
uint32_t arr[8];
};
but it doesn't work (compiler: expected primary expression before '}' token.). I've looked at other SO questions and people were passing around things like std::initializer_list
, and trying interesting things like placing the array initializer in double braces like so:
MyClass() : arr( {{1,2,3,4,5,6,7,8}} ) {}
but I'm unfamiliar with the purpose of std::initializer_list
and also I'm not quite sure why there's double braces in the above code (though it doesn't work anyway, so I'm not sure why it matters).
Is there a normal way to achieve initialization of my arr
variable in a constructor initializer list?
Your syntax is correct. Alternatively, you can say
arr{1,2,3,...}
.Most likely is that your compiler just doesn't support this construction yet. GCC 4.4.3 and 4.6.1 both do (with
-std=c++0x
).Works perfectly on GCC 4.5.2 with -std=gnu++0x. I get a warning and a freeze with -std=c++98.