ref

The ref command is used to retrieve a value from a Structure when the key is known or if the position in the Structure is known. The ref command will return either the key or the value at that position (see third syntax form).

(ref aStruct key) Strong Typed: (refStrValue aStruct index) (refStrKey aStruct index)

Here are a number of links to Lambda coding examples which contain this instruction in various use cases.

Example_Structure_ref_004

This example shows the ref function returns the value of the Structure through the key reference. This example uses the (ref aStruct key) function syntax.

This example shows the ref function returns the value of the Structure through the index reference. This example uses the (ref aStruct index1) function syntax.

This example shows the ref function returns the key or value of the Structure through the index reference. This example uses the (ref aStruct index1 index2) function syntax.

Here are the links to the data types of the function arguments.

Here are also a number of links to functions having arguments with any of these data types.

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