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ABENCOND_ITERATION_REDUCE_ABEXA - COND ITERATION REDUCE ABEXA

Creating Values with FOR and REDUCE

This example demonstrates conditional iterations with the operator REDUCE.

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Description

This example demonstrates the following simple iterations, which can be used to construct elementary data objects and directly display them in a constructor expression using the reduction operator REDUCE:

• The first expression constructs a value of the type i for which the total of the iteration variable n is calculated. n is numeric, which means that THEN does not have to be specified. Each iteration step increases the value of n by 1.

• The second expression uses the same iteration as the first, but constructs a text string to which each iteration step appends the character representation of n.

• Like the second expression, the third expression constructs a text string, but uses the addition THEN explicitly to decrement the iteration variable instead of incrementing it.

• Finally, the fourth expression shows that the iteration variable does not have to be numeric. In this case, THEN must be specified explicitly with a suitable expression. Here, a text string is made longer until it has reached a specific size.