Issue #20657 has been updated by matz (Yukihiro Matsumoto). As @bkuhlmann mentioned, there's room for the language enhancement here to provide arguments to the method for a block. But not this way. Because the arguments belong to the method, not the method call (each or map in the example). Matz. ---------------------------------------- Feature #20657: Allow Enumerable#map(&:method) and #each accept additional parameters for method https://bugs.ruby-lang.org/issues/20657#change-109281 * Author: ukolovda (Dmitry Ukolov) * Status: Open ---------------------------------------- I can use `#map` (or `#each`) with short method name, for example: ``` ruby a = ["a1", "b1", "c1"] b = a.map(&:length) # or a.each(&:some_method) ``` But with additional arguments I must use yield: ```ruby c = a.map { |item| item.ljust(10) } # or a.each { |item| item.some_method(arg1, arg2) } ``` Direct sending allow make the code more simple: ```ruby c = a.map(&:ljust, 10) # Now give syntax error, unexpected ',', expecting ')' # or a.each(&:some_method, arg1, arg2) # Now give syntax error, unexpected ',', expecting ')' ``` -- https://bugs.ruby-lang.org/