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view demo/cookie.ur @ 522:3162bbf8e30f
Avoid Especializing polymorphic code
author | Adam Chlipala <adamc@hcoop.net> |
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date | Thu, 27 Nov 2008 12:43:28 -0500 |
parents | ddd363e856ff |
children | 93315ac00394 |
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cookie c : {A : string, B : float, C : int} fun set r = setCookie c {A = r.A, B = readError r.B, C = readError r.C}; return <xml>Cookie set.</xml> fun main () = ro <- getCookie c; return <xml><body> {case ro of None => <xml>No cookie set.</xml> | Some v => <xml>Cookie: A = {[v.A]}, B = {[v.B]}, C = {[v.C]}</xml>} <br/><br/> <form> A: <textbox{#A}/><br/> B: <textbox{#B}/><br/> C: <textbox{#C}/><br/> <submit action={set}/> </form> </body></xml>