This will bring tears to the eyes of the old folk:
Whatever happened to O<backspace>U<backspace>T ?
Nostalgia
Forum rules
This forum is for general chit-chat, not necessarily APL-related. However, it's not for spam or for offensive or illegal comments.
This forum is for general chit-chat, not necessarily APL-related. However, it's not for spam or for offensive or illegal comments.
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Roger|Dyalog
- Posts: 238
- Joined: Thu Jul 28, 2011 10:53 am
Re: Nostalgia
See http://keiapl.org/anec/#emulator .
Since the APL\360 source code http://www.computerhistory.org/atchm/the-apl-programming-language-source-code/ is now publicly available you can build your own version of it and bring O<bs>U<bs>T back to life.
Since the APL\360 source code http://www.computerhistory.org/atchm/the-apl-programming-language-source-code/ is now publicly available you can build your own version of it and bring O<bs>U<bs>T back to life.
Re: Nostalgia
ok so I admit I don't know (that is a good thing) what O<backspace>U<backspace>T is ? Will somebody shed some light on this?
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Roger|Dyalog
- Posts: 238
- Joined: Thu Jul 28, 2011 10:53 am
Re: Nostalgia
"Quote-quad" input t←⍞ is formerly used extensively to solicit terminal input from the user. If the programmer made a mistake, e.g.
then there would be no way to interrupt or escape from the erroneous program. The sequence o<backspace>u<backspace>t was introduced so that if the user entered that, an INPUT INTERRUPT is signaled on the line that contains the quote-quad input.
∇ t←foo
l20:
t←⍞
→l20
∇
then there would be no way to interrupt or escape from the erroneous program. The sequence o<backspace>u<backspace>t was introduced so that if the user entered that, an INPUT INTERRUPT is signaled on the line that contains the quote-quad input.