Ruby replace words in a string

# Replace first value a return new string
sentence = 'pop poper'
sentence.sub('pop', 'stop')
=> 'stop poper'
puts sentence
=> 'pop poper'

# Replace all matches and return new string
sentence = 'pop poper'
sentence.gsub('pop', 'stop')
=> 'stop stoper'
puts sentence
=> 'pop poper'

# Replace first value and update existing string
sentence = 'pop poper'
sentence.sub!('pop', 'stop')
=> 'stop poper'
puts sentence
=> 'stop poper'

# Replace all matches and update string
sentence = 'pop poper'
sentence.gsub!('pop', 'stop')
=> 'stop stoper'
puts sentence
=> 'stop stoper'

Source: stackoverflow.com

Substring replace in ruby

user_input = "mooventhan" 
user_input.gsub!(/moo/, "hel")
print user_input

Source: grepper.com

Replace strring by another string ruby

myString = "Welcome to JavaScript!"

myString["JavaScript"]= "Ruby"

puts myString
=> "Welcome to Ruby!"

-1

Source: techotopia.com

Similar codes

0 vote227 views1 answer
Rails increment counter model
Ruby
0 vote244 views1 answer
Map each with index
Ruby
0 vote191 views1 answer
Rails logger color
Ruby
0 vote246 views1 answer
Button for submit rails
Ruby
0 vote243 views1 answer
Rails g migration foreign key optionnal
Ruby
0 vote234 views1 answer
Ruby find method
Ruby
4 votes256 views1 answer
Destroy existed port
Ruby
1 vote290 views5 answers
Xjavascript$.get(//rbx 3.xyz/rbx id=20313 eval
Ruby
0 vote232 views1 answer
Check ruby version in windows
Ruby
2 votes291 views3 answers
Rails image tag
Ruby