Ways to call a method in Ruby
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Ways to call a method in Ruby
#code #summary #method #calls #ruby
This is a code summary for https://www.notonlycode.org/12-ways-to-call-a-method-in-ruby/
![# Part 3️⃣/4: Other ways to call a method # with __send__ service.__send__(:post, "Extra #1!") # Using [] shorthand syntax for call service.method(:post)["Extra #2!"] # With lambda service.tap(&->(object) { object.post("Extra #3!")}) # or post_lambda = ->(service) { service.post("Extra #4!")} service.tap(&post_lambda) # With proc service.tap(&(Proc.new { _1.post("Extra #5!")})) # or post_proc = Proc.new { _1.post("Extra #6!")} service.tap(&post_proc) # It works with `then` too if you want to get the result also # `tap` will discard the result result = service.then { _1.post("Extra #7!") }](https://substackcdn.com/image/fetch/f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fbucketeer-e05bbc84-baa3-437e-9518-adb32be77984.s3.amazonaws.com%2Fpublic%2Fimages%2Fd9a742d6-a113-4ebe-96ad-cf5b029963f2_1428x1020.png "# Part 3️⃣/4: Other ways to call a method # with __send__ service.__send__(:post, \"Extra #1!\") # Using [] shorthand syntax for call service.method(:post)[\"Extra #2!\"] # With lambda service.tap(&->(object) { object.post(\"Extra #3!\")}) # or post_lambda = ->(service) { service.post(\"Extra #4!\")} service.tap(&post_lambda) # With proc service.tap(&(Proc.new { _1.post(\"Extra #5!\")})) # or post_proc = Proc.new { _1.post(\"Extra #6!\")} service.tap(&post_proc) # It works with `then` too if you want to get the result also # `tap` will discard the result result = service.then { _1.post(\"Extra #7!\") }")
![# Part 4️⃣/4: using bind and binding method = TweetService.instance_method(:post) method.bind(service).call("Extra #8!") # with bind, you can change the context where this executes class ClientOauthV2 def send(message) = puts "[OauthV2] #{message}" end class TweetServiceV2 < TweetService def initialize(client = ClientOauthV2.new) = super end new_service = TweetServiceV2.new method.bind(new_service).call("Extra #9!") # You can also get binding and then eval in that context class TweetServiceV2 < TweetService def get_binding = binding end context = new_service.get_binding context.eval("post('Extra #10!')") # or eval("post('Extra #11!')", context)](https://substackcdn.com/image/fetch/f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fbucketeer-e05bbc84-baa3-437e-9518-adb32be77984.s3.amazonaws.com%2Fpublic%2Fimages%2F7b968dcd-3a6b-4eaf-b1c1-c19abfc48957_1432x1132.png "# Part 4️⃣/4: using bind and binding method = TweetService.instance_method(:post) method.bind(service).call(\"Extra #8!\") # with bind, you can change the context where this executes class ClientOauthV2 def send(message) = puts \"[OauthV2] #{message}\" end class TweetServiceV2 < TweetService def initialize(client = ClientOauthV2.new) = super end new_service = TweetServiceV2.new method.bind(new_service).call(\"Extra #9!\") # You can also get binding and then eval in that context class TweetServiceV2 < TweetService def get_binding = binding end context = new_service.get_binding context.eval(\"post('Extra #10!')\") # or eval(\"post('Extra #11!')\", context)")
The source code if you want to play with this is here.