Question

How to concatenate strings with spaces and reject empty strings in Ruby

Answer 1

s1 = "java"
s2 = "ruby"
s3 = ""
s4 = "python"

s = [s1, s2, s3, s4].reject(&:empty?).join(' ')

puts s

puts s.class



# run:
#   
# java ruby python
# String
#

 

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