new thoughts over function pointers

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Previous works do not relate to function pointers, but reading some documents reading and learning STL functions lets me know the pointer of functions is broadly used in functions such as XXX_if(). I don‘t think it‘s really that difficult, but it really confused me at the beginning point that why do we have to include such a useless characteristic in our nicely-organized language..

Functions lists:

count_if

find_if

remove_if

remove_copy_if

replace_if

replace_copy_if

new thoughts over function pointers

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原文地址：http://www.cnblogs.com/sansna/p/5577142.html