What do you call the -> operator in Ruby?

by

In Ruby Programming Language (“Methods, Procs, Lambdas, and Closures”), a lambda defined using -> is called lambda literal. 

succ = ->(x){ x+1 }
succ.call(2)

The code is equivalent to the following one. 

succ = lambda { |x| x + 1 }
succ.call(2)

Informally, I have heard it being called stabby lambda or stabby literal.

More Related Contents:

  1. What does map(&:name) mean in Ruby?
  2. What is Ruby’s double-colon `::`?
  3. Is there any difference between the `:key => “value”` and `key: “value”` hash notations?
  4. Is Hash Rocket deprecated?
  5. What does @@variable mean in Ruby?
  6. What exactly is `&:capitalize` in Ruby?
  7. Is there a performance gain in using single quotes vs double quotes in ruby?
  8. Difference between ‘..’ (double-dot) and ‘…’ (triple-dot) in range generation?
  9. Ruby Proc Syntax
  10. What does
  11. Need a simple explanation of the inject method
  12. What does to_proc method mean in Ruby?
  13. Automatic counter in Ruby for each?
  14. Why does white-space affect ruby function calls?
  15. What are those pipe symbols for in Ruby?
  16. When do Ruby instance variables get set?
  17. Where is it legal to use ruby splat operator?
  18. What are the benefits of the new hash syntax in Ruby 1.9?
  19. How to use double brackets in a regular expression?
  20. Why is `a = a` `nil` in Ruby?
  21. Ruby’s File.open and the need for f.close
  22. How to check whether a string contains a substring in Ruby
  23. How to get a specific output iterating a hash in Ruby?
  24. Passing a method as a parameter in Ruby
  25. What does “
  26. Ruby factorial function
  27. Read, edit, and write a text file line-wise using Ruby
  28. Ruby: filter array by regex?
  29. What will give me something like ruby readline with a default value?
  30. Functional code examples in ruby

Leave a Comment