what's the difference of back_inserter and inserter in c++ - 未名空间MITBBS历史存档

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what's the difference of back_inserter and inserter in c++

what's the difference of back_inserter and inserter in c++# JobHunting - 待字闺中

s*n2012-03-30 07:03

1 楼

set_union (current_tree_indexes.begin(), current_tree_indexes.end(), tree_
indexes.begin(),tree_indexes.end(), inserter(tree_indexes, tree_indexes.end(
)));
is working.
But
set_union (current_tree_indexes.begin(), current_tree_indexes.end(), tree_
indexes.begin(),tree_indexes.end(), back_inserter(tree_indexes))
is not working...

f*n2012-03-30 07:03

2 楼

back_inserter requires a Back Insertion Sequence. I don't know what type "
tree_indexes" is, but if it is a set, set is not a Back Insertion Sequence. inserter just requires a Container.

s*n2012-03-30 07:03

3 楼

Thank you!
tree_indexes is a set

. inserter just requires a Container.

【在 f*******n 的大作中提到】

: back_inserter requires a Back Insertion Sequence. I don't know what type "
: tree_indexes" is, but if it is a set, set is not a Back Insertion Sequence. inserter just requires a Container.