STL set and map question - 未名空间MITBBS历史存档

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STL set and map question

STL set and map question# Programming - 葵花宝典

vi2005-11-01 08:11

1 楼

It feels like whereever you need a map, it can be done by a set,
by defining the key of the map as the key for the set, and have
the value of the map as regular data members.
What's the rational to make the difference between the two? Thanks.

c*r2005-11-01 08:11

2 楼

How would you associate the "regular data members" with the keys?

【在 vi 的大作中提到】

: It feels like whereever you need a map, it can be done by a set,
: by defining the key of the map as the key for the set, and have
: the value of the map as regular data members.
: What's the rational to make the difference between the two? Thanks.

vi2005-11-01 08:11

3 楼

If a map has the key T and Value V, then let's make a set with key {T, N},
where T = *(set::iterator).

【在 c*r 的大作中提到】

:
: How would you associate the "regular data members" with the keys?