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Re: Prefix and Suffix Notation in Maple?

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Following up, the left-associativity of the &-operators makes using them to mimick postfix functional application appears to work OK. But it messes up for prefix functional application.

restart:

`&>`:=proc(a,b) a(b); end proc:
`&<`:=proc(a,b) b(a); end proc:

f:=t->sin(t)+t^3:

f&>4;
                          sin(4) + 64

13&<f;
                         sin(13) + 2197

g:=t->R(t):

g&>f&>4; # not useful
                            R(f)(4)

4&<f&<g; # ok
                         R(sin(4) + 64)


So, without right associativity this is not such a nice way to get the prefix functionality. Putting in brackets, as delimiters, ruins it as a "shortcut".


g&>(f&>4); # result is ok
                         R(sin(4) + 64)



I don't have any better suggestion, for the prefix shortcut. Maple's `not` is right associative and a module could export it (rebind it for interactive use). But alas, it is unary.

acer

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Prefix and Suffix Notation in Maple? "Dr. Giggleson" <hahaha@com.yahoo> - 2012-02-06 22:51 -0600
  Re: Prefix and Suffix Notation in Maple? acer <maple@rogers.com> - 2012-02-06 22:27 -0800
    Re: Prefix and Suffix Notation in Maple? acer <maple@rogers.com> - 2012-02-06 22:49 -0800

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