Converting a list to an array

Question

Let's assume that I have a list that I can access like list[[i, j]]
How can I convert it to an array such that:
my_array[i, j] = list[[i, j]]
In the simplest way (avoiding loops). Also, ideally shifting array index such that my_array[i, j] = list[[i+1, j+1]] (to have the [0, 0] of the array matching the first element from the "matrix" [[1, 1]])

bill s · Answer

What you're calling my_array may be thought of as a function, which you can assign like:
myfun[i_, j_] := list[[i, j]];

or, to shift the indices:
myfun[i_, j_] := list[[i+1, j+1]];

kglr · Answer

SeedRandom[1]
list = RandomInteger[10, {4, 5}]

{{1, 4, 0, 7, 0}, {0, 8, 6, 0, 4}, {1, 8, 5, 1, 1}, {1, 3, 2, 10, 1}}

ClearAll[myArray]
myArray = Indexed[list, 1 + {##}] /. Indexed[_, ___] :> Undefined &;

{myArray[0, 1], myArray[3, 2], myArray[4, 6]}

{4, 2, Undefined}

Converting a list to an array

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