Define a primitive data type: Difference between revisions
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=={{header|Frink}}== |
=={{header|Frink}}== |
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Frink can set "constraints" on variables that must be enforced at all times. One way is to define a function that returns <CODE>true</CODE> if the constraint is met. This constraint is checked whenever assigning a new value to the variable. |
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<lang frink>oneToTen[x] := isInteger[x] AND x >= 1 AND x <= 10 |
<lang frink>oneToTen[x] := isInteger[x] AND x >= 1 AND x <= 10 |
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