[Haskell-cafe] Why does (++ "!") "bla" return "bla!" and not "!bla"?

Brandon Allbery allbery.b at gmail.com
Fri Jun 22 07:10:15 CEST 2012

On Fri, Jun 22, 2012 at 12:54 AM, Hilco Wijbenga
<hilco.wijbenga at gmail.com>wrote:

> I think I'm close to understanding why (++ "!") "bla" returns "bla!
> instead of "!bla" but I seem to be missing the last step. :-) I
> noticed that ((++) "!") "bla" does indeed return "!bla". So it seems
> to be related to the infix property of ++? The types of (++) "!",

Correct; it is related to (++) being infix.  Specifically, think about how
partial application would work with an *infix*, as opposed to a *prefix*,
expression.  It might also help to know that the syntax there is called a

brandon s allbery                                      allbery.b at gmail.com
wandering unix systems administrator (available)     (412) 475-9364 vm/sms
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