Benchmark of D against other languages

[bearophile via Digitalmars-d]

weaselcat:

>>> was it a conscious decision to make the AA [] operator not 
>>> work like map/etc in C++?
>>
>> What do you mean?
>
> accessing a non-existing element in C++'s map/unordered_map 
> inserts the default instead of raising an exception
>
> int main(int argc, char *argv[])
> {
>     std::unordered_map<std::string, int> test;
>     std::cout << test["hello"] << std::endl;
>     return 0;
> }
>
> prints 0
>
> void main()
> {
>     int[string] test;
>     writeln(test["hello"]);
> }
>
> core.exception.RangeError at source/main.d(9): Range violation

Yes, it was a conscious decision, because here C++ behaves in a 
very bug-prone way. Sometimes C++ is a bad example to follow 
(like with permutations generations, that currently is not a 
Range in Phobos for the wrong reasons).

Bye,
bearophile