pretzel.rb

https://twitter.com/garybernhardt/status/349920138889404416

[1] pry(main)> class Object; alias_method :&, :method; end
=> Object

With standard symbol to proc, &:foo evaluates to:

{ |x| x.foo }

With the "pretzel bun", &foo&:bar evaluates to:

{ |x| foo.bar x }

Impractical, but more relatable example:

[2] pry(main)> (1..3).map &User&:find
  User Load (36.2ms)  SELECT "users".* FROM "users" WHERE "users"."id" = $1 LIMIT 1  [["id", 1]]
  User Load (0.8ms)  SELECT "users".* FROM "users" WHERE "users"."id" = $1 LIMIT 1  [["id", 2]]
  User Load (0.4ms)  SELECT "users".* FROM "users" WHERE "users"."id" = $1 LIMIT 1  [["id", 3]]
=> [#<User id: 1,...>,
 #<User id: 2,...>,
 #<User id: 3,...]
[3] pry(main)> User.method :find
=> #<Method: Class(ActiveRecord::Querying)#find>
[4] pry(main)> User&:find
=> #<Method: Class(ActiveRecord::Querying)#find>
[5] pry(main)> (User&:find).to_proc
=> #<Proc:0x00000006c0b628 (lambda)>
[6] pry(main)> (User&:find).to_proc.call 1
  User Load (2.8ms)  SELECT "users".* FROM "users" WHERE "users"."id" = $1 LIMIT 1  [["id", 1]]
=> #<User id: 1,...>

&:foo evaluates to:

{ |x| x.foo }

@cbandy you're totally right. not sure if i'm going to attribute that as a typo or brain fart.