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Declare a statement
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A for-each-statement is introduced with 'for' and it executes the loop body for all elements of an array. The Seed7 library "array.s7i" contains the following definition of the for-each-statement:

const proc: for (inout baseType: variable) range (in arrayType: arr_obj) do
              (in proc: statements)
            end for is func
  local
    var integer: number is 0;
  begin
    for number range minIdx(arr_obj) to maxIdx(arr_obj) do
      variable := arr_obj[number];
      statements;
    end for;
  end func;

The type arrayType is an array of baseType elements. The local integer variable 'number' is declared and initialized with an integer literal. A for-statement is used to execute the loop body for all values of 'number' between minIdx(arr_obj) and maxIdx(arr_obj). The syntax of the for-each-statement is declared in the library "syntax.s7i" as:

$ syntax expr: .for.().range.().to.().do.().end.for is              -> 25;

Additionally everybody can overload the for-each-statement also. Because of this powerful features it is not necessary to use iterators.


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