Creating implementation for idiom 140 : Delete map entry

Idiom

# 140 Delete map entry

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Lead paragraph

Delete from map m the entry having key k.

Explain what happens if k is not an existing key in m.

New implementation

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Other implementations

(dissoc m k)

m.erase(k);

System.Collections.Generic

map.Remove(key);

m.remove(k);

Map myMap = {};
myMap.remove(key)

m = Map.delete(m, k)

delete(m, k)

import Data.Map.Strict
import Data.Map.Lazy

delete k m

m.delete(k)

map.remove(k);

m[k]=nil

unset($m[k]);

uses ghashmap;

m.delete(k);

delete $m{$k}; # also succeeds when $k does not exist in %m

m.pop(k, None)

m.delete(k)

use std::collections::HashMap;

m.remove(&k);

m -= k

m - k