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at:tutorial:basic [2020/02/09 19:25] – adding elisagat:tutorial:basic [2020/02/09 19:37] elisag
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 >>[2, 3, 4] >>[2, 3, 4]
 </code> </code>
 +
 +
 +
 +
 +
 +
  
 ==== Multidimensional tables ==== ==== Multidimensional tables ====
  
-<code>+As mentioned before, there is no special constructor for definition of multidimensional tables, a table entry can contain another table. In what follows we have a closer look to manipulations with multidimensional tables.  Consider a multidimensional table which is extensionally defined as follows:
  
 +<code>
 def a := [[1,0,0], [0,1,0], [0,0,1]]; def a := [[1,0,0], [0,1,0], [0,0,1]];
 >>[[1, 0, 0], [0, 1, 0], [0, 0, 1]] >>[[1, 0, 0], [0, 1, 0], [0, 0, 1]]
Line 104: Line 111:
 def aux[3] {0};  def aux[3] {0}; 
 def b[3] { i := i + 1; aux := [0,0,0]; aux[i] :=1; aux}; def b[3] { i := i + 1; aux := [0,0,0]; aux[i] :=1; aux};
 +>>[[1, 0, 0], [0, 1, 0], [0, 0, 1]]
 +>b[1][2]
 +>>0
 </code> </code>
 +
 +Finally, we can create a function for nXn tables as follows:
 +
 +<code>
 +def makeMatrix(n) { def col[n] {0}; def m[n] { [@col]}};
 +def c := makeMatrix(3);
 +>>[[0, 0, 0], [0, 0, 0], [0, 0, 0]]
 +>(c[1])[2] := 3;
 +>>3
 +>c
 +>>[[1, 3, 0], [0, 1, 0], [0, 0, 1]]
 +>c[2] := [1,2,3]
 +>>[1, 2, 3]
 +>c
 +>>[[1, 3, 0], [1, 2, 3], [0, 0, 1]]
 +</code>
 +
  
 ===== Functions ===== ===== Functions =====
at/tutorial/basic.txt · Last modified: 2020/02/09 22:05 by elisag