So it seems there is no way to pass argument lists?

ruby-talk
1

so it seems there is no way to pass argument lists?

def throwem
	return *[1, 2, 3]
end

def catchem(*args)
	return args.length
end

puts catchem throwem  #--> 1

the astrisk(*) amounts to nothing. :frowning:

···

–
tom sawyer, aka transami
transami@transami.net

2

Tom Sawyer wrote:

puts catchem throwem #–> 1

puts catchem *throwem #–> 3

the astrisk(*) amounts to nothing. :frowning:

Don’t tell it–it thinks it’s a star

3

Hi –

so it seems there is no way to pass argument lists?

def throwem
return *[1, 2, 3]
end

def catchem(*args)
return args.length
end

puts catchem throwem #–> 1

the astrisk(*) amounts to nothing. :frowning:

There’s nothing you can’t do, by way of passing arrays around; you
just have to process them according to what you’ve asked Ruby to do.
In this case, if you have:

def catchem(*args)

then you have to get at args[0] to see the first argument – which, in
this case, is itself an array. (It’s not that the * in throwem does
nothing; it’s that the way Ruby passes multiple return values is by
packaging them into an array.)

def throwem
return 1,2,3
end

def catchem(*args)
args[0].length
end

puts catchem(throwem) # 3

David

···

On Fri, 10 Jan 2003, Tom Sawyer wrote:

–
David Alan Black
home: dblack@candle.superlink.net
work: blackdav@shu.edu
Web: http://pirate.shu.edu/~blackdav

4

understood. thanks. unfortunately, i was trying to make my code a little
neater:

catchem throwthrew throwem

rather then having to do:

catchem *(throwthrew *throwem)

oh well, i’ll figure out another way.

···

On Thursday 09 January 2003 11:39 am, dblack@candle.superlink.net wrote:

There’s nothing you can’t do, by way of passing arrays around; you
just have to process them according to what you’ve asked Ruby to do.
In this case, if you have:

def catchem(*args)

then you have to get at args[0] to see the first argument – which, in
this case, is itself an array. (It’s not that the * in throwem does
nothing; it’s that the way Ruby passes multiple return values is by
packaging them into an array.)

def throwem
return 1,2,3
end

def catchem(*args)
args[0].length
end

puts catchem(throwem) # 3

–
tom sawyer, aka transami
transami@transami.net

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5

Dave Thomas wrote:

Tom Sawyer wrote:

puts catchem throwem  #--> 1

puts catchem *throwem #–> 3

the astrisk(*) amounts to nothing. :frowning:

Don’t tell it–it thinks it’s a star

Ba-dump. Spwwwshhhh!