lib/lightgbm/utils.rb in lightgbm-0.3.3 vs lib/lightgbm/utils.rb in lightgbm-0.3.4

@@ -10,10 +10,10 @@
     def params_str(params)
       params.map { |k, v| [check_param(k.to_s), check_param(Array(v).join(",").to_s)].join("=") }.join(" ")
     end
 
     def check_param(v)
-      raise ArgumentError, "Invalid parameter" if /[[:space:]]/.match(v)
+      raise ArgumentError, "Invalid parameter" if /[[:space:]]/.match?(v)
       v
     end
 
     # change default verbosity
     def set_verbosity(params)