title: Correct way to work with vector of arrays
body: <p>Could someone tell what is the correct way to work with a vector of arrays? </p>
  
  <p>I declared a vector of arrays (<code>vector&lt;float[4]&gt;</code>) but got <code>error: conversion from 'int' to non-scalar type 'float [4]' requested</code> when trying to <code>resize</code> it. What is going wrong?</p>