By Stephen C. Dewhurst

It is a fairly unprofessional and poorly equipped tome. the writer is boastful and condescending and turns out to understand his reader as an fool. The gotchas frequently look schizophrenic and bounce far and wide. whereas there are a few nuggets betwixt the pages, it is so painful to learn, i could not suggest this to anyone.

Stick with potent C++ and remarkable C++. This ebook does not even come as regards to the readability and appropriateness in language and magnificence (particularly of potent C++).

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Extra resources for C++ Gotchas: Avoiding Common Problems in Coding and Design

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By the way, the same syntax problem can occur with a simple declaration as well but is usually easier to detect: int a[12]; // array of 12 ints int b(12); // an int initialized to 12 [ Team LiB ] [ Team LiB ] Gotcha #14: Evaluation Order Indecision C++'s C roots are nowhere more evident than in the evaluation order traps it lays for the unwary. This item looks at several manifestations of the same problem: the C and C++ languages permit a lot of leeway in how expressions are evaluated. This flexibility can result in highly optimized code, but it also requires careful attention on the part of the programmer to avoid unfounded assumptions about evaluation order.

12 = 13; // error! const int *ip2 = &ci; // OK ci = 13; // error! It's best to consider const, in the declaration ofip2 above, a restriction on how we may manipulateci through ip2 rather than on how ci may be manipulated in general. Consider declaring a pointer to a const: const int *ip3 = &i; i = 10; // OK *ip3 = 10; // error! Here, we have a pointer to a constant integer that refers to a non-constant integer. The use of const in this case is simply a restriction on how ip3 may be used. It doesn't imply thati won't change, only that we may not change it through ip3.

Likewise, many programmers are ignorant of the fact that the result of a conditional operator is an lvalue (see Gotcha #6) if both its potential results are lvalues. This ignorance necessitates code like the following: // version #1 if( a < b ) a = val(); else if( b < c ) b = val(); else c = val(); // version #2 a

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