Ruby block_given? method

# used when we call method with and without block from different places
def try
  if block_given?
    yield
  else
    "no block"
  end
end
try                  #=> "no block"
try { "hello" }      #=> "hello"
try do "hello" end   #=> "hello"

Source: apidock.com

Similar codes

0 vote127 views1 answer
Rails form select boolean
Ruby
0 vote127 views1 answer
Rails g migration foreign key optionnal
Ruby
1 vote133 views1 answer
Array of random letters ruby
Ruby
14 votes245 views2 answers
Ruby each do method
Ruby
0 vote140 views1 answer
True sting to true in rails
Ruby
1 vote132 views1 answer
Ruby version from script
Ruby
1 vote132 views1 answer
Ruby comment
Ruby
0 vote132 views1 answer
Ruby for each continue
Ruby
0 vote133 views1 answer
Max keys from hash ruby
Ruby
0 vote138 views1 answer
How to force exit server in rails
Ruby