Inputs: [arg]
Returns: tsk/Vec

Coerce any scalar values to a vector

Inputs: [src :- tsk/Vec idxs :- IndexSpec]
Returns: tsk/Vec

Delete elements at the specified indexes.

Inputs: [src :- tsk/Vec idxs :- IndexSpec]
Returns: tsk/Vec

Given a source vector V and a list of index values `idx`, returns a vector: [ V(idx-1) V(idx-2) ...]

Given a predicate fn and a collection of values, returns the index values for which the
predicate is true & false like:
  (pred-index #(zero? (rem % 3)) [0 10 20 30 40 50 60 70 80])
    => {:idxs-true   [0 3 6]
        :idxs-false  [1 2 4 5 7 8] } 

Inputs: [dest :- tsk/Vec idxs :- IndexSpec src :- tsk/Vec]
Returns: tsk/Vec

Given a dest vector V, a list of index values `idx`, and a conforming src vector,
returns a modified V such that V(idx-j) = src[j] for j in [0..len(idx)] 

Inputs: [dest :- tsk/Vec idxs :- IndexSpec src :- s/Any]
Returns: tsk/Vec

Like vec-put-idxs, but is lax in accepting the src vector. If a scalar is supplied,
it is replaced with `(repeat <src>)`. If the src vector is longer than the idxs, it is truncated
to conform.

Inputs: [idxs]
Returns: s/Any

Validates that a collection of N index values includes all values in [0..N).

Inputs: [tgt :- tsk/Vec idxs :- [s/Int]]

Assets that an integer index is non-negative and less than a bound