exactEquals function
Returns whether or not the vectors have exactly the same elements in the same position (when compared with ==)
@param {ReadonlyVec3} a The first vector. @param {ReadonlyVec3} b The second vector. @returns {Boolean} True if the vectors are equal, false otherwise.
Implementation
bool exactEquals(a, b) {
return a[0] == b[0] && a[1] == b[1] && a[2] == b[2];
}