Scott Meyers's Effective STL: 50 Specific Ways to Improve Your Use of the PDF

By Scott Meyers

Constantly been a problem. previously. during this e-book, best-selling writer Scott Meyers (Effective C++, and more advantageous C++) unearths the serious principles of thumb hired by means of the specialists - the issues they more often than not do or typically steer clear of doing - to get the main out of the library.Other books describe what is within the STL. potent STL indicates you the way to take advantage of it. all of the book's 50 instructions is sponsored by way of Meyers' mythical research and incisive examples, so you will research not just what to do, but in addition while to do it - and why.Highlights of powerful STL include:Advice on deciding on between typical STL boxes (like vector and list), nonstandard STL bins (like hash_set and hash_map), and non-STL bins (like bitset).Techniques to maximise the potency of the STL and the courses that use it.Insights into the habit of iterators, functionality items, and allocators, together with stuff you aren't do. suggestions for the right kind use of algorithms and member features whose names are an identical (e.g., find), yet whose activities fluctuate in sophisticated (but vital) ways.Discussions of capability portability difficulties, together with undemanding how one can steer clear of them. Like Meyers' prior books, powerful STL is stuffed with confirmed knowledge that comes purely from adventure. Its transparent, concise, penetrating kind makes it a vital source for each STL programmer.

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Read Online or Download Effective STL: 50 Specific Ways to Improve Your Use of the Standard Template Library (Addison-Wesley Professional Computing Series) PDF

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Extra resources for Effective STL: 50 Specific Ways to Improve Your Use of the Standard Template Library (Addison-Wesley Professional Computing Series)

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I can think of only one legitimate cause for concern in replacing dynamically allocated arrays with vectors or strings, and it applies only to strings. Many string implementations employ reference counting behind the scenes (see Item 15). a strategy that eliminates some unnecessary memory allocations and copying of characters and that can improve performance for many applications. In fact, the ability to optimize strings via reference counting was considered so important, the C++ Standardization Committee took specific steps to make sure it was a valid implementation.

And multimap). , containers based on data structures in which a new node is dynamically allocated each time a value is to be stored. In the case of list, the nodes are list nodes. In the case of the standard associative containers, the nodes are usually tree nodes, because the standard associative containers are typically implemented as balanced binary search trees. Think for a moment about how a list is likely to be implemented. The list itself will be made up of nodes, each of which holds a T object as well as pointers to the next and previous nodes in the list: template > // implementation class list{ private: Allocator alloc; // allocator for objects of type T struct ListNode{ T data: ListNode *prev; ListNode *next; }; … }; // nodes in the linked list When a new node is added to the list, we need to get memory for it from an allocator, but we don't need memory for a T.

On others, it will silently blunder forward, sometimes leaking resources and corrupting memory' as it goes. 3. You must make sure that delete is used exactly once. If an allocation is deleted more than once, results are again undefined. That's quite a set of responsibilities, and I can't understand why you'd want to adopt them if it wasn't necessary. Thanks to vector and string, it isn't necessary anywhere near as often as it used to be. e.. ]"), you should consider using a vector or a string instead.

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