[Cs3] Class question, erase in maps by key value(s)

[Mikhail Nesterenko]

> so for a given map could you erase by range not by iterators but by
> key values.  ex: employees. erase(111 ,555) to remove all employees
> with 111 < Key < 555 or with an iterator to a key value.

There is a solution to this question using lower_bound() and upper_bound()

map::lower_bound(X) returns an iterator to the element with a key no
		    greater than X
map::upper_bound(X) returns an iterator to the element with a key
		    (strictly) greater than X

Note the asymmetry in the operation of the two functions: they are
designed to obtain a half-open range.

I came up with example usage:

http://www.cs.kent.edu/~mikhail/classes/cs3/Examples/STLContainersAssociative/mapRangeErase.cpp


thanks,
-- 
Mikhail