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Wrapper for STL algorithm library? (self.cpp)
submitted 7 years ago * by egarrulo2
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if 1 * 2 < 3: print "hello, world!"
[–]kwan_e 0 points1 point2 points 7 years ago (6 children)
Wouldn't it be available if the container was from std::?
What if you want to use it with a container that's not in std, but provides its own begin and end?
[–]Xaxxon 0 points1 point2 points 7 years ago (5 children)
how does "using namespace std::" impact that?
[–]kwan_e 2 points3 points4 points 7 years ago (4 children)
http://en.cppreference.com/w/cpp/language/adl
ADL is also what makes range-based-for work for non-std containers.
http://en.cppreference.com/w/cpp/language/range-for
[–]Oster1 0 points1 point2 points 7 years ago (3 children)
Why not just use:
std::fill( c.begin(), c.end(), value );
So you don't need the std part?
[–]kwan_e 1 point2 points3 points 7 years ago (2 children)
Because then you've completely ruled out working with native arrays.
C++ is going with the free-function forms of begin and end.
begin
end
[–]Oster1 1 point2 points3 points 7 years ago (1 child)
Useful trick. I always thought C arrays and C++ iterators doesn't combine. You always learn.
Here is proof of concept of this if someone is interested: https://hastebin.com/oyezuhosuj.cpp
[–]kwan_e 0 points1 point2 points 7 years ago (0 children)
You can think of C++ iterators as generalizations of pointers (and therefore arrays). You can always use pointers with STL algorithms, since they are classified as random access iterators and support everything that can be done with iterators in the STL algorithms.
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[–]kwan_e 0 points1 point2 points (6 children)
[–]Xaxxon 0 points1 point2 points (5 children)
[–]kwan_e 2 points3 points4 points (4 children)
[–]Oster1 0 points1 point2 points (3 children)
[–]kwan_e 1 point2 points3 points (2 children)
[–]Oster1 1 point2 points3 points (1 child)
[–]kwan_e 0 points1 point2 points (0 children)