Array copy in ADVPL

The first assignment only references memory, making the two arrays point to the same memory location. Then we have:

Conout(aArray1[2]) //Imprime B
aArray2[2] := "R" //Altera o segundo array faz a alteração no primeiro
Conout('aArray1[2]) //Imprime R

In case case 2 the array is copied:

aArray2 := aClone(aArray1)
Conout(aArray1[2]) //Imprime B
aArray2[2] := "R" //Altera o segundo array não faz a alteração no primeiro
Conout('aArray1[2]) //Imprime B

Obs. Whenever we use an array, especially when we clone them with the aClone, we should use the aSize function to clear the space used in memory.

aArray2 := aSize(array2,0) //Zera o uso da memoria.

When doing a simple assignment of an array using the ': =' operator one variable will reference the memory address of the other using the aClone () function ( link ) variable will be assigned a real copy of the array.