sequence ireplace_first_copy (input, search, format, local);
void ireplace_first (input, search, format, local);
sequence ireplace_first_copy (input, search, format, local);
void ireplace_first (input, search, format, local);
把input中搜索到的第一个search替换成format。
outputiterator replace_last_copy (outputiterator, input, search, format);
sequence replace_last_copy (input, search, format);
void replace_last (input, search, format);
outputiterator ireplace_last_copy (outputiterator, input, search, format, local);
sequence ireplace_last_copy (input, search, format, local);
void ireplace_last (input, search, format, local);