Date: 2008-07-04 10:08:29
I have written in my free time the "single_pass_search" C++ template function, which performs generic sequence searching similarly to the std::search STL algorithm. The most important quality of single_pass_search and its main advantage over std::search is its capability to search for a sub-sequence in a search-range that is accessed through a pair of single-pass (input) iterators, while std::search requires that the search-range must be accessed via forward iterators at least.
For example, single_pass_search can easily search a file directly through a pair of istream iterators, while std::search requires the interference of an intermediate container in order to obtain the file data via a pair of forward iterators at least. With data sources like istream, using single_pass_search instead of std::search is by far simpler, more efficient and less memory consuming as well, because the std::search algorithm additionally requires an intermediate container and some stream buffering logic.
For more information, I have uploaded in the "Boost File Vault" the following files:
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