Re: [Boost-users] How to bind the first of a pair?

yinglcs2@yahoo.com wrote:

I am not sure how low_bound() will work. My understanding is it only return the ** first ** instance.

But so does find_if.

but I am looking for ** all instances ** which fit the condition (i.e. the first value of the key pair matches the input parameter).

Since a map is sorted by its key, you just need to proceed from the iterator lower_bound returns until you hit an element with .first != x (or end()). Anyway, ...

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iterator& itr = find_if(myMap.begin(),

... you need to omit the reference here. iterator itr = find_if( ...