ruby replace certain character
# Ruby language
str_old = "first-name last-name"
str_old.sub("-", "_") # Replace first "-" with "_"
str_old.gsub("-", "_") # Replace all "-" with "_"ruby replace certain character
# Ruby language
str_old = "first-name last-name"
str_old.sub("-", "_") # Replace first "-" with "_"
str_old.gsub("-", "_") # Replace all "-" with "_"replace strring by another string ruby
myString = "Welcome to JavaScript!"
myString["JavaScript"]= "Ruby"
puts myString
=> "Welcome to Ruby!"Copyright © 2021 Codeinu
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