41–50 of 58 posts
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>The behavior of [] is from C -- it's not a bizarro C++ feature. I'd say that a feature of C++ is still a feature of C++ even if the same feature is in C.
The point was probably that it is not obscure; it's what you had to learn when using plain C in the first week.
Dark font on dark background. Unreadable.
The behavior of [] is from C -- it's not a bizarro C++ feature. The "redefining keywords" is the pre-processor. That's what it does. There isn't anything magic here. Strictly speaking it can be run entirely ahead of the C/C++ compiler, on any file you want. There's no requirement that it is C/C++ - you could use it on a python script (as long as you weren't using # comments anywhere :D )
Moreover, 3[a] appears to be supported solely for backwards compatibility with C since it works only for pointers - you can't do this with classes which define operator[](int).
For example, I could do:
class MyClass {int operator+(int a) { return a; }};
MyClass x;
x + 1; // Valid.
1 + x; // Type error.
= -> [] ()
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I see this as no different than being able to do for (int i = 0; i
Imagine my surprise, getting out of college and trying to use this at my job, when the compiler told me it was invalid! It wasn't obscure to me, but apparently was to the Sun Studio C++ compiler.
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Imagine my surprise, getting out of college and trying to use this at my job, when the compiler told me it was invalid! It wasn't obscure to me, but apparently was to the Sun Studio C++ compiler.
It was added in C99, I think.
Obscure? You may think so but sometimes these things buy you lots of time.
My favorite is that these are indeed "alternate operator tokens " an so you can use `compl` in place of ~ to name a destructor. Like, for explicit destruction: MyType* foo = ...; foo->compl MyType();
Bonus: Can you paste together the "compl" token with preprocessor macros?
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The point was probably that it is not obscure; it's what you had to learn when using plain C in the first week.
And the next week, and six months after that, again.