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49 lines
1.5 KiB
Plaintext
49 lines
1.5 KiB
Plaintext
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/*****************************************************************
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* Functions to help treat arrays in a uniform manner. These were
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* inspired by a thread on comp.lang.c++.moderated, started by Dietmar
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* Kuehl and contributed to by the rest of the entire planet.
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*
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* beginof (x), endof (x), lengthof (x) now accompany sizeof, where x
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* can be either a container (currently only sequences) or a builtin
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* array (/not/ a pointer). The beginof/endof are intended for use in
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* the algorithms library, and lengthof is a "sizing" function.
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*
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* Note example:
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* char an_array [17];
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* cerr << lengthof(an_array) << endl;
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* produces assembly code of
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* mov 17,register0
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* call ofstream_put
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* i.e., the template function inlining really does work; g++/egcs
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* requires -O3 (or -finline-functions) before it does this, though.
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*
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* pedwards 13Nov98
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*/
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// beginof
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template <class T>
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inline typename vector<T>::iterator beginof (vector<T> &v)
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{ return v.begin(); }
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template <class T, unsigned int sz>
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inline T* beginof (T (&array)[sz]) { return array; }
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// endof
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template <class T>
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inline typename vector<T>::iterator endof (vector<T> &v)
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{ return v.end(); }
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template <class T, unsigned int sz>
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inline T* endof (T (&array)[sz]) { return array + sz; }
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// lengthof
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template <class T>
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inline typename vector<T>::size_type lengthof (vector<T> &v)
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{ return v.size(); }
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template <class T, unsigned int sz>
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inline unsigned int lengthof (T (&)[sz]) { return sz; }
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