Boost C++ Libraries

...one of the most highly regarded and expertly designed C++ library projects in the world. Herb Sutter and Andrei Alexandrescu, C++ Coding Standards

This is the documentation for an old version of Boost. Click here to view this page for the latest version.
PrevUpHomeNext

Lazy Statements

Lazy statements? Sure. There are lazy versions of the C++ statements we all know and love. For example:

if_(arg1 > 5)
[
    std::cout << arg1
]

Say, for example, we wish to print all the elements that are greater than 5 (separated by a comma) in a vector. Here's how we write it:

std::for_each(v.begin(), v.end(),
    if_(arg1 > 5)
    [
        std::cout << arg1 << ", "
    ]
);

(See if.cpp)

Learn more about statements here.


PrevUpHomeNext