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Programming-Idioms

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  • Rust

Idiom #276 Insert an element in a set

Insert an element e into the set x.

use std::collections::HashSet
x.insert(e);

x has type mut HashSet

returns false if the set already had the value present, true otherwise
#include <set>
x.insert(e);
New implementation...
< > ⌨
programming-idioms.org 
x.insert(e);
x.insert(e);
x.add(e);
x[e] = true
x[e] = struct{}{}
x.add(e);
x.add(e)
x[e] = true
x := x + [e];
Include(x,e);
$x = Set::Scalar->new;
$e = 'an element';
$x->insert($e);
x.add(e)
x.add(e)
x << e