Worked my way through CTM, but with a different language. But I in
translating some other code where I needed file io (writing out
postscript files), I ran into the same problem.
The solution is to download File.oz from the book's supplement web page
and compile it. Source can be found at:
http://www.info.ucl.ac.be/~pvr/ds/mitbook.html
Chris
Justin Henzie wrote:
Hi all,
Sorry for the newb question but I am a little stuck
I am working my way through CTM and I am trying to get the WordFreq
program at the end of Chapter 3 up and running.
My specific problem is how the File.readList is accessing stdin.
If I execute the code as written:
*/L={File.readList stdin}/*
The following error occurs
%********************** error in URL support ********************
%**
%** Cannot locate file
%**
%** File name: stdin
%** Operation: open
%**
%** Call Stack:
%** procedure 'Get' in file
"/Users/bmejias/Mozart/mozart-1-4-x/mozart/share/lib/init/Resolve.oz",
line 394, column 6, PC = 4061088
%**--------------------------------------------------------------
Investigating a little further I added the following
*/StdIn = {New Open.file init(name:stdin)}/*
*/ /**/ /**/L={File.readList StdIn}/*
Which generates
%*************************** type error *************************
%**
%** Expected type: virtualstring
%** At argument: 1
%** In statement: {VirtualString.toString <O: File> _<optimized>}
%**
%** Call Stack:
%** procedure 'ToString' in file
"/Users/raph/devel/mozdss-branch/mozart/share/lib/base/VirtualString.oz",
line 54, column 6, PC = 8632344
%** procedure 'PARSE' in file
"/Users/bmejias/Mozart/mozart-1-4-x/mozart/share/lib/dp/URL.oz", line
215, column 3, PC = 4283680
%** procedure 'Get' in file
"/Users/bmejias/Mozart/mozart-1-4-x/mozart/share/lib/init/Resolve.oz",
line 394, column 6, PC = 4060480
%** procedure 'File,init' in file
"/Users/bmejias/Mozart/mozart-1-4-x/mozart/share/lib/op/Open.oz", line
291, column 2, PC = 4121972
%** procedure 'ReadList' in file "./File.oz", line 30, column 3, PC =
8571596
%** procedure in file "./WordApp.oz", line 1, column 0, PC = 8565672
%** procedure 'RootManager,Pickle/fast' in file
"/Users/bmejias/Mozart/mozart-1-4-x/mozart/share/lib/init/Module.oz",
line 244, column 6, PC = 8543904
%** procedure in file
"/Users/raph/devel/mozdss-branch/mozart/share/lib/base/Base.oz", line
92, column 7, PC = 4264612
%**--------------------------------------------------------------
Any help would be greatly appreciated.
Regards,
Justin
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