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 vote319 views1 answer
Rails migration change type of column
Ruby
0 vote299 views1 answer
How to include ,multiple modules in ruby
Ruby
-1 vote310 views2 answers
New line
Ruby
1 vote293 views2 answers
Get input from user in ruby
Ruby
0 vote336 views3 answers
Invalid authenticity token rails
Ruby
1 vote325 views1 answer
How to run a ruby file in terminal
Ruby
0 vote346 views1 answer
Ruby get haft of array
Ruby
0 vote352 views1 answer
Force user to login before action devise rails
Ruby
0 vote314 views1 answer
Microsoft office 2016 txt file activator
Ruby
0 vote375 views1 answer
Remove order by from query in rails
Ruby