Comments on: Ruby Block Scope

By: The MIM

The MIM — Wed, 16 Sep 2009 15:42:27 +0000

minimal version: f = nil ['apple', 'bannana', 'orange'].each {|f| print "#{f}, "}; puts f

By: Chris

Chris — Thu, 07 May 2009 08:49:55 +0000

fruit = %w[apple banana orange]
string = fruit.join(‘, ‘)
puts “#{string}, #{fruit.last}”

By: Rails for PHP Developers - Applying Ruby’s Blocks

Rails for PHP Developers - Applying Ruby’s Blocks — Tue, 09 Sep 2008 18:21:01 +0000

[...] long ago, we took a look at the basics of Ruby Block Scope. When you’re first getting started with Ruby’s blocks (closures), little things like [...]

By: Rafal Piekarski

Rafal Piekarski — Thu, 17 Apr 2008 21:50:44 +0000

But I’ve found some other solution for this:

fruit = %w[apple banana orange]
last_fruit = nil

fruit.each do |f|
print “#{f}, ”
last_fruit = f
end

print last_fruit

which would be near php method:

fruits = %w[apple banana orange]
fruit = nil

fruits.each do |fruit|
print “#{fruit}, ”
end

print fruit

It’s nicer than method with “last_fruit”. But it’s only a hint.

By: Mike

Mike — Wed, 20 Feb 2008 22:46:49 +0000

Thanks for catching the typo.

By: tim

tim — Wed, 20 Feb 2008 22:34:03 +0000

The sentence “In Ruby, scoping is more dynamic” scares me.

“Dynamic scoping” has a very specific meaning. PHP appears to use dynamic scoping; Ruby uses lexical scoping, not dynamic scoping.

I’m not sure what you mean by “more dynamic”. If you mean the dictionary definition (roughly, “energetic”), I’m not sure how that applies. If you mean the computer science definition, it sounds exactly backwards.