Re: std::vector construction

From:

James Kanze <james.kanze@gmail.com>

Newsgroups:

comp.lang.c++

Date:

Fri, 13 Feb 2009 14:20:31 -0800 (PST)

Message-ID:

<7ccd0697-dab0-4ce5-8216-9b481980c31f@d32g2000yqe.googlegroups.com>

On Feb 13, 12:36 pm, "mlt" <f...@adsf.com> wrote:

Is there someway to create a std::vector from a sequence of
numbers? On this page:

http://www.cppreference.com/wiki/stl/vector/vector_constructors

there are 4 different constructors, but none of them supports
something like:

std::vector<int> v = {1,2,3};

Its only possible to do it like:

std::vector<int> v;

v.push_back(1,2,3);

There are several solutions. As Alf has pointed out, you can
always copy a staticly initialized C-style array (although it's
more idiomatic---and less error prone---to use template
functions to get the start and end addresses). For specific
instances where the sequence can be calculated, however, I'd
look into Boosts iterator adapters (to be used with the same
constructor---the template one with two iterators).

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James Kanze (GABI Software) email:james.kanze@gmail.com
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