Function isSubsetOf`Const`

isSubsetOf<T>(
seq: Iterable<T>,
setFactory?: SetFactory<T>,
): (src: Iterable) => boolean
Determines whether every element of the source iterable exists in the comparison sequence.

Curried version of _isSubsetOf.
Type Parameters
- T
  Element type produced by both iterables.
Parameters
- seq: Iterable<T>
  Iterable that must contain all values from src.
- setFactory: SetFactory<T> = ...
  Optional factory supplying the set used for membership checks.
Returns (src: Iterable) => boolean
true when src is a subset of seq, otherwise false.
Throws
Error Rethrows any error thrown by setFactory.
Example
```
const result = _isSubsetOf([1, 2], [1, 2, 3]);
console.log(result); // true
```
or using the curried version:
```
const result = pipeInto(
  [1, 2],
  isSubsetOf([1, 2, 3])
);
console.log(result); // true
```