Ruby regular expression using variable name

Question

Is is possible to create/use a regular expression pattern in ruby that is based on the value of a variable name?

For instance, we all know we can do the following wi

Answer 1

It works, but you need to use gsub! or assign the return to another variable

var = "Value"
str = "a test Value"
str.gsub!( /#{var}/, 'foo' )  # Or this: new_str = str.gsub( /#{var}/, 'foo' )
puts str