hasPath

Check if nested map has a path.

Alternatives: has, hasValue, hasEntry, hasSubset, hasPath.
Similar: hasPath, getPath, setPath$, removePath$.

function hasPath(x, p)
// x: a nested map
// p: path

const map = require('extra-map');

var x = new Map([['a', 2], ['b', 4],  ['c', 6]]);
var y = new Map([['x', x], ['e', 10], ['f', 12]]);
map.hasPath(y, ['e']);
// → true

map.hasPath(y, ['x', 'b']);
// → true

map.hasPath(y, ['x', 'b', 'c']);
// → false

References

• ArrayList.get: Java
• _.nth: lodash
• Array.at: sugarjs