According to "The Well Grounded Rubyist" 2nd edition the following should increment the size of the all_symbols array by 2 for variables a and b but it doesn't:
Symbol.all_symbols.size
=> 3812
a = 1
=> 1
Symbol.all_symbols.size
=> 3812
b = 2
=> 2
Symbol.all_symbols.size
=> 3812
Symbol.all_symbols.include? :a
=> true
Symbol.all_symbols.include? :b
=> true
Symbol.all_symbols.size
=> 3812
I'm running Ruby version 2.1.0 on Mac OS X.
gvim
According to "The Well Grounded Rubyist" 2nd edition the following should increment the size of the all_symbols array by 2 for variables a and b but it doesn't:
Symbol.all_symbols.size
=> 3812
a = 1
=> 1
Symbol.all_symbols.size
=> 3812
b = 2
=> 2
Symbol.all_symbols.size
=> 3812
Symbol.all_symbols.include? :a
=> true
Symbol.all_symbols.include? :b
=> true
Symbol.all_symbols.size
=> 3812
I'm running Ruby version 2.1.0 on Mac OS X.
That's certainly true _in_theory_ but you're running irb, which is a complicated mess:
Symbol.all_symbols.sort.grep(/^a/).first 5
=> [:a, :a1, :a2, :abort, :abort_on_exception]
but even without irb, there's plenty of symbols defined:
10004 % ruby -e 'p Symbol.all_symbols.sort.grep(/^a/).first 5'
[:a, :abort, :abort_on_exception, :abort_on_exception=, :abs]
On Feb 22, 2014, at 16:56, gvim <gvimrc@gmail.com> wrote:
Did you check to see if :a and :b already existed?
~ ∙ pry
[1] pry(main)> Symbol.all_symbols.size
=> 14199
[2] pry(main)> Symbol.all_symbols.include? :a
=> true
[3] pry(main)> Symbol.all_symbols.size
=> 14199
[4] pry(main)> an_unlikely_name_to_see_if_we_get_a_new_symbol = 5
=> 5
[5] pry(main)> Symbol.all_symbols.size
=> 14200
[6] pry(main)> RUBY_VERSION
=> "2.1.0"
On Feb 22, 2014, at 7:56 PM, gvim <gvimrc@gmail.com> wrote:
According to "The Well Grounded Rubyist" 2nd edition the following should increment the size of the all_symbols array by 2 for variables a and b but it doesn't:
Symbol.all_symbols.size
=> 3812
a = 1
=> 1
Symbol.all_symbols.size
=> 3812
b = 2
=> 2
Symbol.all_symbols.size
=> 3812
Symbol.all_symbols.include? :a
=> true
Symbol.all_symbols.include? :b
=> true
Symbol.all_symbols.size
=> 3812
I'm running Ruby version 2.1.0 on Mac OS X.
gvim
--
Mike Stok <mike@stok.ca>
http://www.stok.ca/~mike/
The "`Stok' disclaimers" apply.
That's certainly true _in_theory_ but you're running irb, which is a complicated mess:
Symbol.all_symbols.sort.grep(/^a/).first 5
=> [:a, :a1, :a2, :abort, :abort_on_exception]
but even without irb, there's plenty of symbols defined:
10004 % ruby -e 'p Symbol.all_symbols.sort.grep(/^a/).first 5'
[:a, :abort, :abort_on_exception, :abort_on_exception=, :abs]
So irb is different? Might explain why I also get this:
require 'date'
=> false
require 'time'
=> true
gvim
On 23/02/2014 01:52, Ryan Davis wrote:
I wouldn't call it different... but IRB loads code. A lot of it.
On Feb 22, 2014, at 18:12, gvim <gvimrc@gmail.com> wrote:
On 23/02/2014 01:52, Ryan Davis wrote:
That's certainly true _in_theory_ but you're running irb, which is a complicated mess:
Symbol.all_symbols.sort.grep(/^a/).first 5
=> [:a, :a1, :a2, :abort, :abort_on_exception]
but even without irb, there's plenty of symbols defined:
10004 % ruby -e 'p Symbol.all_symbols.sort.grep(/^a/).first 5'
[:a, :abort, :abort_on_exception, :abort_on_exception=, :abs]So irb is different? Might explain why I also get this:
require 'date'
=> false
require 'time'
=> true