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Re: [Bug-apl] How do you handle the contents of POST in a CGI script
From: |
Kacper Gutowski |
Subject: |
Re: [Bug-apl] How do you handle the contents of POST in a CGI script |
Date: |
Mon, 12 Oct 2015 12:18:15 +0200 |
On Mon, Oct 12, 2015 at 5:48 AM, <address@hidden> wrote:
> Why do you choose to write it like this?:
> ContentsOfPOST←{⍵, FIO∆fread 0}⍣{⍺⊢FIO∆feof 0}''
>
> This method (in my limited knowledge) seems equivalent:
> ContentsOfPOST←(FIO∆feof 0) FIO∆fread 0
I don't think it is.
FIO∆fread takes as its left argument a number of bytes to read or
assumes 5000 when called monadically. FIO∆feof returns either 1
when end-of-file indicator for the stream is set and 0 otherwise.
So (FIO∆feof 0) FIO∆fread 0 would try to read zero bytes when EOF
is not reached or one byte if it is, and in result it should always
return 0 without reading anything.
The idea was to read and catenate default-sized blocks until FIO∆feof
says we hit the end-of-file and ⍣ allows me to write this succinctly
(forgive me if not very readably).
-k