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 vote310 views1 answer
Rails sendgrid setup
Ruby
0 vote276 views1 answer
How to change heroku version locally
Ruby
3 votes282 views1 answer
Ruby string contains
Ruby
1 vote291 views2 answers
Ruby iterate hash with index
Ruby
1 vote317 views1 answer
Get current year in ruby
Ruby
0 vote320 views1 answer
Ruby shorthand if
Ruby
0 vote287 views1 answer
Rails update without callback
Ruby
0 vote274 views1 answer
Rails list down attributes of model
Ruby
1 vote294 views1 answer
For loop ruby
Ruby
2 votes303 views1 answer
Ruby compiler
Ruby