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I’m trying example from Learning J but it doesn’t work. How do I write to/read from a file in J?
F =: 'c:\temp\demofile.xyz' NB. a filename
'some data' 1!:2 < F NB. write to file F
|file name error
| 'some data' 1!:2<F
I’m trying it under Windows 7.
As @Eelvex suggested the problem was with writing permission to the folder ‘c:\temp’. Yet the file name was fine, J produced
file name errordue to the lack of permissions.