Exploring C++20 by Ray Lischner

Author:Ray Lischner
Language: eng
Format: epub
ISBN: 9781484259610
Publisher: Apress

import data;

import intrange;

int main()

{

intvector data{};

read_data(data);

// sort into descending order

std::ranges::sort(data, [](int a, int b) { return b < a; });

auto odd{ std::ranges::remove_if(data, [](int x) { return x % 2 == 0; }) };

intvector uniquely_odd{};

std::unique_copy(begin(data), begin(odd), std::back_inserter(uniquely_odd));

write_data(uniquely_odd);

}

Listing 45-13.Erasing Elements from a Vector

Iterators

Algorithms, ranges, and iterators are closely related. I waved my hands a lot when describing how to use the algorithms with various kinds of iterators, ranges, and subranges. Before examining ranges in depth, we need to take a closer look at iterators and how to use them effectively, which is the topic of the next Exploration.

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