removing from vector

[Jakubo]

Hi, I have vector<string> filled with some values.
I need to remove every item if(vec.empty() && vec[i-1].empty())

For remove all empty strings i will use:
vec.erase(remove_if(vec.begin(), vec.end(), isEmpty), vec.end())

isEmpty is simply returning string::empty()

But how to remove it only if previous item was empty as well?
For example if my vector contain values:

["some str", "", "", "", "some other", "and other", "", "next", "", ""]

I need:

["some str", "", "some other", "and other", "", "next", ""]


Thanks for any tips
Best regards
Jakub

 

[Daniel T.]

Hi, I have vector<string> filled with some values.
I need to remove every item if(vec.empty() && vec[i-1].empty())

For remove all empty strings i will use:
vec.erase(remove_if(vec.begin(), vec.end(), isEmpty), vec.end())

isEmpty is simply returning string::empty()

But how to remove it only if previous item was empty as well?
For example if my vector contain values:

["some str", "", "", "", "some other", "and other", "", "next", "", ""]

I need:

["some str", "", "some other", "and other", "", "next", ""]

Consider std::unique(). You will probably have to make a predicate for
it.

 

[Jakubo]

Consider std::unique(). You will probably have to make a predicate for
it.

I knew it was in Scott Meyers "Efective STL" :>, but I was looking for
it in containers chapter instead of algorithms

Thank You
Best regards
Jakub