What does this vector assignment mean?

 diceLeft = 5
 dice = []
 dice = [dice randi([1,6],1,diceLeft)];

Answer 1

[Thorsten]

That's easy:

randi([1,6],1,diceLeft)

generates a 1 x diceLeft matrix of random integer values from the interval [1,6].

For the first call of

dice = [dice randi([1,6],1,diceLeft)];

when dice is empty, you get these diceLeft numbers; for subsequent calls of

dice = [dice randi([1,6],1,diceLeft)];

you add diceLeft new random numbers.