'with' proposal

[Elias Athanasopoulos]

Hello!

Wouldn't something like this be cool?

class Foo
def read
...
end
def dump
...
end
def is_empty?
...
end
end

f = Foo.new

with f do
read
dump
draw unless is_empty?
end

Regards,
--
University of Athens I bet the human brain
Physics Department is a kludge --Marvin Minsky

[David A. Black]

Hi --

On Sun, 23 Nov 2003, Elias Athanasopoulos wrote:

> Hello!
>
> Wouldn't something like this be cool?
>
> class Foo
> def read
> ...
> end
> def dump
> ...
> end
> def is_empty?
> ...
> end
> end
>
> f = Foo.new
>
> with f do
> read
> dump
> draw unless is_empty?
> end

irb(main):007:0> class Foo; def talk; puts "hi"; end; end
=> nil
irb(main):008:0> f = Foo.new
=> #<Foo:0x400b32a8>
irb(main):009:0> f.instance_eval do talk end
hi

:-)


David

--
David A. Black
[email]dblack@wobblini.net[/email]

[Elias Athanasopoulos]

On Sun, Nov 23, 2003 at 03:30:18AM +0900, David A. Black wrote:

> irb(main):007:0> class Foo; def talk; puts "hi"; end; end
> => nil
> irb(main):008:0> f = Foo.new
> => #<Foo:0x400b32a8>
> irb(main):009:0> f.instance_eval do talk end
> hi
>
> :-)

Uber nice! Thanx. :-)

Regards,
--
University of Athens I bet the human brain
Physics Department is a kludge --Marvin Minsky

[Dan Doel]

Further:

class Foo
def talk
puts "Hi."
end
end

def with(obj, &blk)
obj.instance_eval &blk
end

f = Foo.new

with f do
talk
end


- Dan

[gabriele renzi]

il Sun, 23 Nov 2003 03:26:38 +0900, Elias Athanasopoulos
<elathan@phys.uoa.gr> ha scritto::

>Hello!
>
>Wouldn't something like this be cool?
>

>with f do
> read
> dump
> draw unless is_empty?
>end
>

this is a faq:

def with(obj, &blk)
obj.instance_eval &blk
end

with 10 do
puts to_s
puts methods
end