మూస:Pstp/doc
< మూస:Pstp
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This is a parameter selection template. It returns the value of the parameter whose name is the value of parameter p.
Usage
మార్చు{{pstp|a=fa |b=fb |p=a}}→ fa{{pstp|a=fa |b=fb |p=b}}→ fb
Thus {{pstp|p={{{1}}}|a=fa|b=fb|..}} can represent any function f given by a set of pairs (a,fa), (b,fb), .. , except that these cannot include a pair (p,fp). To allow the latter also, we can use {{pstp|p=q{{{1}}}|qa=fa|qb=fb|..}}.
m:Template:Ppp is identical.