function GatherByIndex(const X: TMtxVecInt; const Indexes: TVecInt): TVecInt;
Gathers elements from X specified by indices stored in Indexes the calling object.
| # | Name | Type | Description |
|---|---|---|---|
| 1 | X | TMtxVecInt | |
| 2 | Indexes | TVecInt |
Result: stored in self (calling object), returns self for chaining