BirthME, Doulas

Sometimes you want to create an object, call some methods on it & return that same object. – tjmcewan Jun 26 '14 at 1:52.

Anyway, I used a lambda: plusone = ->(x) { x + 1 } then take out the symbol specifier: [1,2,3].map(&plusone). In other words: a method always knows what object it was called on, it knows what its self is.




The Tap Method. visit Yields self to the block, and then returns self. Join a community of over 250,000 senior developers. challenges together.InfoQ recently sat down with Bassam Tabbara, founder and CEO of Upbound, and discussed building application platforms that span multiple cloud vendors and on-premise infrastructure. Lets see it with below example.Same thing can be done using tap without disturbing the chain of expressions and getting immediate results after each chain execution.Just like any other ruby syntactic sugar , I would say Aviacommerce is an open source e-commerce framework with an aim to simplify e-commerce ecosystem by creating and unifying smart services and providing consistent, cost-effective solution to sellers helping them sell more. In Ruby 1.9, the tap method is defined in Object, making it available for every object in Ruby by default. This doesn't work for me in irb. Note: If updating/changing your email, a validation request will be sent Here’s where the tap method comes to the rescue!
self を引数としてブロックを評価し、self を返します。 メソッドチェインの途中で直ちに操作結果を表示するためにメソッドチェインに "入り込む" ことが、このメソッドの主目的です。 You would have to do something like this: user = User.new user.name = "John" user The problem is that we have to deal with this temporary variable. 1. hmm sounds like you declared private inside of the class where you put your method before … See our Please take a moment to review and update. Join a community of over 250,000 senior developers. Just like any other ruby syntactic sugar, I would say tap is a pretty cool ruby method which can not just be used for readability but also to debug chained methods.

But, we grabbed the method directly from a class, how does it know what its self is? The primary purpose of this method is to " tap into" a method chain, in order to perform operations on intermediate results within the chain. You will be sent an email to validate the new email address. Dom Davis looks at how Go handles concurrency, and how goroutines and channels can be utilized to create complex concurrent patterns.Deep systems, with multiple layers of microservices, have special challenges, and handling them requires the right mindset and tools.Susanne Groothuis discusses how KPMG created a custom sentiment analysis model capable of detecting subtleties, and provide them with a metric indicating the balance of a report.Victoria Puscas talks about how a team of engineers and data scientists worked together for a year and became high performing by embracing change, improving day to day practices, breaking the walls between disciplines and overcoming many communication (and other!) This pop-up will close itself in a few moments.I consent to InfoQ.com handling my data as explained in this I consent to InfoQ.com handling my data as explained in this By subscribing to this email, we may send you content based on your previous topic interests.

The primary purpose of this method is to “ tap into” a method chain, in order to perform operations on intermediate results within the chain. tap instance method Object#tap tap {|x| ... } -> self .