When did IO::read appear?

[Bil Kleb]

I wrote some code on a ruby 1.7.2 (2002-05-29) machine using
IO.read, but when I moved it to a ruby 1.6.8 (2002-12-24)
machine I got an exception,

NameError: undefined method `read' for IO:Class

What's the idiomatic workaround for this sort of thing?

Thanks,

 

[Dave Thomas]

I wrote some code on a ruby 1.7.2 (2002-05-29) machine using
IO.read, but when I moved it to a ruby 1.6.8 (2002-12-24)
machine I got an exception,

NameError: undefined method `read' for IO:Class

What's the idiomatic workaround for this sort of thing?

To be backwards compatible, you can use:

content = File.open(name) { |f| f.read}


Cheers

Dave

 

[ts]

B> What's the idiomatic workaround for this sort of thing?

redefine it, something like (not tested)

unless IO::respond_to?read)
def IO::read(file, lgth = nil, offset = 0)
Kernel:pen(file) do |io|
io.seek(offset) if !offset.zero?
io.read(lgth)
end
end
end


Guy Decoux