# digitSum ( _Zahl )

The digit sum of a given integer is the sum of all its digits

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Alexander Baier FM Tutorial http://www.fm-tutorial.de |

Sample input:

digitSum( 1234)

Sample output:

10

Function definition: (Copy & paste into FileMaker's Edit Custom Function window)

The recursive function sum all digit of a Number.

1234 = 1 + 2 + 3 + 4 = 10

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