What is the equivalent of Python's list[:x] in C++? -

in python, if have list l , want first x elements of it, call l[:x].

in c++, use vectors instead, don't know of easy way invoke first x elements of vector.

there several ways:

1) create vector v consisting of first x elements as:

 std::vector<t>  v { begin(l), begin(l) + x };

2) pass first x elements function, pair of iterators:

 f(begin(l), begin(l) + x);

where f accepts 2 iterators arguments — explore standard algorithms <algorithm>, of them work on pair of iterators.

depending on use case, use of them.

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