r.( x )

Read(320) Label: record, compute, expression,

Description:

Compute an expression against a record and return the result.

Syntax:

r.( x )

Note:

The function computes the expression x against record r, and return the result.

Parameters:

r

A record

x

An expression, which is generally a field name or a legal expression that is composed of field names. Use "~" to reference the current record.

Return value:

The computation of x

Example:

 

A

 

1

=[[12,23]].new(~(1):col1,~(2):col2)

 

2

=A1(1).(col2+1)

24