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str = "Hello☺ World☹" Expected output is:
"Hello:) World:(" I can do this: str.gsub("☺", ":)").gsub("☹", ":(")
Is there any other way so that I can do this in a single function call?. Something like:
str.gsub(['s1', 's2'], ['r1', 'r2']) 
473
Since Ruby 1.9. 2, String#gsub accepts hash as a second parameter for replacement with matched keys. You can use a regular expression to match the substring that needs to be replaced and pass hash for values to be replaced.
First, you don't declare the type in Ruby, so you don't need the first string . To replace a word in string, you do: sentence. gsub(/match/, "replacement") .
gsub! is a String class method in Ruby which is used to return a copy of the given string with all occurrences of pattern substituted for the second argument. If no substitutions were performed, then it will return nil. If no block and no replacement is given, an enumerator is returned instead.
Use str_replace_all() method of stringr package to replace multiple string values with another list of strings on a single column in R and update part of a string with another string.
Since Ruby 1.9.2, String#gsub accepts hash as a second parameter for replacement with matched keys. You can use a regular expression to match the substring that needs to be replaced and pass hash for values to be replaced.
Like this:
'hello'.gsub(/[eo]/, 'e' => 3, 'o' => '*') #=> "h3ll*" '(0) 123-123.123'.gsub(/[()-,. ]/, '') #=> "0123123123" In Ruby 1.8.7, you would achieve the same with a block:
dict = { 'e' => 3, 'o' => '*' } 'hello'.gsub /[eo]/ do |match| dict[match.to_s] end #=> "h3ll*" If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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