4.13 Macro Formal Parameters
4.13 Macro Formal Parameters
Formal parameters can appear in the expressions forming macro bodies in
accordance with the syntax rules defined above. A formal parameter expands to
Tutorial
the text of the expansion of its corresponding actual parameter. There is nothing
preventing a formal parameter being provided as part of an expression that forms
Developer
an actual parameter. In that happens, the formal parameter is bound to the actual
parameter of the calling macro, not the called macro. After the following
Reference
definitions,
1 Introduction
2 Interface
@$@@(@1@)=@{A walrus in @1 is a walrus in vain.@}
@$@@(@1@)=@{@@(S@1n@)@}
3 Scanner
4 Parser
the call
5 Analyser
6 Tangle
@@(pai@)
7 Weave
will result in the expansion
8 Shell
9 Commands
A walrus in Spain is a walrus in vain.
10 Glossary
11 References
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Copyright   Ross N. Williams 1992,1999. All rights reserved.
http://www.ross.net/funnelweb/reference/parser_parameters.html [3/3/2000 10:47:00 PM]





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