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From: Per Bothner <>
Subject: Re: behavior of CASE with strings PART 2
Date: Thu, 19 Jan 2017 04:53:00 -0000	[thread overview]
Message-ID: <> (raw)
In-Reply-To: <>

On 01/17/2017 10:36 PM, Per Bothner wrote:
> I think this is something to think of for the Kawa 3.0 release,
> using the new PATTERN construct in each clause.

The invoke branch has a 'match' form, which has the syntax:


This matches TARGET-EXPR against each PATTERN, until one matches,
at which point the BODY... forms are evaluated.

This is the 'match' form from Racket:

Unfortunately, the implemented forms of PATTERN are very
limited, but the intention to allow literals and quoted forms.
These will be compared using equal?, so you will be able to write:

    (match "yes"
     ("no" #f)
     ("yes" #t))

THIS IS NOT YET IMPLEMENTED.  (It's not conceptually hard; I just need to
decide the best way to present such match forms.)

I think this is the generalization of 'case' that we're looking for.
	--Per Bothner

  reply	other threads:[~2017-01-19  4:53 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-01-17 10:07 Damien MATTEI
2017-01-17 13:24 ` Per Bothner
2017-01-17 15:57   ` Jamison Hope
2017-01-18  6:37     ` Per Bothner
2017-01-19  4:53       ` Per Bothner [this message]
2017-01-19 10:04         ` Damien MATTEI
2017-01-19 16:00           ` Per Bothner
2017-01-21  9:47         ` Damien Mattei
2017-01-22  4:36           ` match form as a generalization of case Per Bothner
2017-01-23 22:12             ` Damien Mattei
2017-01-23 22:27               ` Per Bothner
2017-01-20 22:54 behavior of CASE with strings PART 2 Damien Mattei

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