removePath$ - nodef/extra-map GitHub Wiki
Remove value at path in a nested map.
Similar: hasPath, getPath, setPath$, removePath$. Similar: get, set, remove.
function removePath$(x, p)
// x: a nested map (updated)
// p: path
const map = require('extra-map');
var x = new Map(['a', 2], ['b', 4], ['c', 6](/nodef/extra-map/wiki/'a',-2],-['b',-4],-['c',-6));
var y = new Map(['x', x], ['e', 10], ['f', 12](/nodef/extra-map/wiki/'x',-x],-['e',-10],-['f',-12));
map.removePath$(y, ['e']);
// → Map(2) { 'x' => Map(3) { 'a' => 2, 'b' => 4, 'c' => 6 }, 'f' => 12 }
y;
// → Map(2) { 'x' => Map(3) { 'a' => 2, 'b' => 4, 'c' => 6 }, 'f' => 12 }
map.removePath$(y, ['x', 'b']);
// → Map(2) { 'x' => Map(2) { 'a' => 2, 'c' => 6 }, 'f' => 12 }
map.removePath$(y, ['x', 'b', 'c']);
// → Map(2) { 'x' => Map(2) { 'a' => 2, 'c' => 6 }, 'f' => 12 } (no effect)