Name: %%EVAL

Section: Primitive Operators

Synopsis:

<%%eval &rest body>

Description:

Evaluate the result of evaluating BODY and return that value.

It would be a very rare case indeed, where a user-level program would require the use of this tag. If you think you want to use this tag, you probably want to use <apply> instead.

You may use this function to call another function on some arguments, where the other function is determined dynamically. For example:

<if <set-in-session>
    <set-var func=set-session-var>
  <set-var func=set-var>>

<%%eval <<get-var-once func> <get-var-once name> = <get-var-once value>>>

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The META-HTML Reference Manual V2.0 Copyright © 1995, 1998, Brian J. Fox
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