Value to clamp (must be an interger)
Array, or length of bounds (must be an integer)
Clamped value, minimum will be 0, maximum will be one less than length.
// Array of length 4
const myArray = [`a`, `b`, `c`, `d`];
clampIndex(0, myArray); // 0
clampIndex(5, 3); // 2
Throws an error if v is not an integer.
For some data it makes sense that data might 'wrap around' if it exceeds the range. For example rotation angle. Consider using wrap for this.
Clamps integer
vbetween 0 (inclusive) and array length or length (exclusive). Returns value then will always be at least zero, and a valid array index.