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multiple lists for foreach

I see code of this form:

foreach( (field prompt)
'( lib cell view resultfile )
list("Library Name" "Cell Name" "View Name" "Output Results File")

/*do something here*/

)

I understand that the loop is reading both "field" and "prompt" from the two lists, however, I do not find any documentation for this. This seems very similar to "zip" in python. What is this form called, and where is it documented.

Thanks

Parents

Andrew Beckett over 8 years ago

It's also clearly documented in the SKILL Language Reference Manual. A search for "foreach" in cdnshelp finds this easily enough, and it's also in this chapter on the support portal: https://support.cadence.com/apex/techpubDocViewerPage?path=sklangref/sklangrefIC6.1.7/controlflow.html#1039950&title=%20foreach

It works because foreach is essentially a convenient way of calling mapc (one of several mapping functions) which apply a function of N arguments to N lists - essentially the foreach creates an anonymous function (a lambda) and then calls mapc. A number of ideas in python actually have been borrowed from Lisp (SKILL is a dialect of Lisp).

Regards,

Andrew.
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Andrew Beckett over 8 years ago

It's also clearly documented in the SKILL Language Reference Manual. A search for "foreach" in cdnshelp finds this easily enough, and it's also in this chapter on the support portal: https://support.cadence.com/apex/techpubDocViewerPage?path=sklangref/sklangrefIC6.1.7/controlflow.html#1039950&title=%20foreach

It works because foreach is essentially a convenient way of calling mapc (one of several mapping functions) which apply a function of N arguments to N lists - essentially the foreach creates an anonymous function (a lambda) and then calls mapc. A number of ideas in python actually have been borrowed from Lisp (SKILL is a dialect of Lisp).

Regards,

Andrew.
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Vote Up +1 Vote Down

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