what does s+ in str.gsub(/\s+/ mean in ruby

In Ruby, the gsub method is used to perform a global substitution in a string using regular expressions. In the regular expression /s+/, the s represents a space character, and the + is a quantifier that matches one or more occurrences of the preceding character or group.

So, str.gsub(/\s+/) is replacing one or more spaces in the string str with another value (which is not provided in your question).

Here's an example to demonstrate:

main.rb
str = "Hello     World"
modified_str = str.gsub(/\s+/, "-")
puts modified_str
# Output: "Hello-World"
102 chars
5 lines

In this example, all the spaces in the string str are replaced with a dash - using the gsub method and the regular expression /s+/.