我想你指的是case/when.
case a_variable # a_variable is the variable we want to compare
when 1 #compare to 1
puts "it was 1"
when 2 #compare to 2
puts "it was 2"
else
puts "it was something else"
end
或
puts case a_variable
when 1
"it was 1"
when 2
"it was 2"
else
"it was something else"
end
编辑
也许每个人都知道在这种情况下什么是有用的.
foo = "1Aheppsdf"
what = case foo
when /^[0-9]/
"Begins with a number"
when /^[a-zA-Z]/
"Begins with a letter"
else
"Begins with something else"
end
puts "String: #{what}"