Hidden Features of C++? -

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no c++ love when comes "hidden features of" line of questions? figured throw out there. of hidden features of c++?

most c++ programmers familiar ternary operator:

x = (y < 0) ? 10 : 20;

however, don't realize can used lvalue:

(a == 0 ? : b) = 1;

which shorthand for

if (a == 0)     = 1; else     b = 1;

use caution :-)


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