std::vector fast access

[Chris Forone]

hello group,

for std::vector, what access is faster from experience, the index or via
iterator?

thanks!

cheers, chris

 

[Juha Nieminen]

for std::vector, what access is faster from experience, the index or via
iterator?

Why don't you measure it?

In most implementations, when not compiling in debug mode, indexing a
std::vector is basically a "pointer[index]" operation, and using an
iterator is identical to using a pointer. Which one is faster depends on
a lot of things.

 

[Daniel T.]

for std::vector, what access is faster from experience, the index or via
iterator?

I'd be suprised if there is any measurable difference at all,
especially in a real world application.