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Rubyã§ãã®å¿…è¦æ€§ã¯æ˜Žã‚‰ã‹ã ã‘ã‚Œã©ã‚‚åå‰ãŒæ±ºã¾ã‚‰ãšã«æ‰¿èªã•ã‚Œãªã„メソッドã¨ã„ã†ã®ãŒã‚ã£ã¦é•·ãè°è«–ãŒç¶šã„ã¦ã„ã‚‹ã‚‚ã®ã«ã€Œå˜ã«selfã‚’è¿”ã™ãƒ¡ã‚½ãƒƒãƒ‰ã€ã¨ã„ã†ã®ãŒã‚るよ。 Feature #6373: public #self - ruby-trunk - Ruby Issue Tracking System ruby - Is there a short way to write {|x| x}? - Stack Overflow
Is there a way to access method arguments in Ruby?
New to Ruby and ROR and loving it each day, so here is my question since I have not idea how to google it (and I have tried :) ) we have method def foo(first_name, last_name, age, sex, is_plumber) # some code # error happens here logger.error "Method has failed, here are all method arguments #{SOMETHING}" end So what I am looking for way to get all arguments passed to method, without listing each
「関数型Rubyã€ã¨ã„ã†ç—…(1) - Symbol#to_proc, Object#method - ( ꒪⌓꒪) ゆるよã‚日記
ã“ã®è¨˜äº‹ã¯ã€Rubyを書ãã«ã‚ãŸã£ã¦ã€Œã„ã‹ã«ãƒ–ãƒãƒƒã‚¯ã‚’書ã‹ãšã«ã™ã¾ã›ã‚‹ã‹ã€ã‚’追求ã—ãŸã€èª°å¾—ãªé€£è¼‰ã§ã‚る。 ã ã£ã¦ã€ãƒ–ãƒãƒƒã‚¯ã£ã¦æ±šã„ã˜ã‚ƒã‚“？仮引数ã®|x|ã¨ã‹ã‚モイ。 Symbol#to_proc 基本ä¸ã®åŸºæœ¬ã€‚ instance method Symbol#to_proc 以下ã®ã‚ˆã†ãªArrayãŒã‚ã£ã¦ã€ irb(main):003:0> arr = [:user, :entry, :article, :comment, :category] => [:user, :entry, :article, :comment, :category] å„è¦ç´ ã‚’to_sã—ãŸã‹ã£ãŸã‚‰ã€ irb(main):004:0> arr.map{|s| s.to_s} => ["user", "entry", "article", "comment", "category"] ã¨æ›¸ãã‹ã‚ã‚Šã«ã€ irb(main)
Ruby ã«ãŠã„ã¦ãƒ¡ã‚½ãƒƒãƒ‰ãŒã©ã“ã§å®šç¾©ã•ã‚Œã¦ã„ã‚‹ã®ã‹ã‚’調ã¹ã‚‹æ–¹æ³• - vivid memo
ruby-talk ã® 381425 㧠「ã©ã®ãƒ¡ã‚½ãƒƒãƒ‰ãŒå‘¼ã³å‡ºã•ã‚Œã¦ã„ã‚‹ã®ã‹èª¿ã¹ã‚‹æ–¹æ³•ã‚’知りãŸã„〠ã¨ã„ã†å†…容ã®è³ªå•ãŒã‚ã‚Šã¾ã—ãŸã€‚ ç§ã‚‚知らãªã‹ã£ãŸã®ã§ã™ãŒã€Method オブジェクトを使ãˆã°ç°¡å˜ã«çŸ¥ã‚‹ã“ã¨ãŒã§ãã‚‹ãã†ã§ã™ã€‚ ã¨ã„ã†ã‚ã‘ã§ã€ãƒ¡ã‚½ãƒƒãƒ‰ãŒã©ã“ã§å®šç¾©ã•ã‚Œã¦ã„ã‚‹ã®ã‹ã‚’調ã¹ã‚‹æ–¹æ³•ã‚’書ã„ã¦ãŠãã¾ã™ã€‚ メソッドを定義ã—ã¦ã„るクラスã¾ãŸã¯ãƒ¢ã‚¸ãƒ¥ãƒ¼ãƒ«ã¸ã®å‚照をå–å¾—ã™ã‚‹ ã‚るメソッドãŒã©ã®ã‚¯ãƒ©ã‚¹ (ã¾ãŸã¯ãƒ¢ã‚¸ãƒ¥ãƒ¼ãƒ«) ã§å®šç¾©ã•ã‚Œã¦ã„ã‚‹ã‹ã‚’知りãŸã‘ã‚Œã°ã€ãã®ãƒ¡ã‚½ãƒƒãƒ‰ã«å¯¾å¿œã™ã‚‹ Method オブジェクトをå–å¾—ã—ã€Method#owner メソッド を呼ã³å‡ºã—ã¾ã™ã€‚ ãã‚Œã ã‘ã§ã€ãƒ¡ã‚½ãƒƒãƒ‰ã‚’定義ã—ã¦ã„るクラス (ã¾ãŸã¯ãƒ¢ã‚¸ãƒ¥ãƒ¼ãƒ«) ã¸ã®å‚照をå–å¾—ã§ãã¾ã™ã€‚ ã¡ãªã¿ã«ã€ã‚ã‚‹åå‰ã®ãƒ¡ã‚½ãƒƒãƒ‰ã«å¯¾å¿œã™ã‚‹ Method オブジェクトをå–å¾—ã™ã‚‹ã«ã¯ã€Kernel#method メソッド を使用ã—ã¾ã™ã€‚ 'ã‚ã„
Tagaholic - Demystifying Irb's Commands
Irb is one of the most commonly used standard ruby libraries, yet most don’t seem to know much about it. I’ve lost count of the number of blog posts that explain some irb “tricks†or “secret†config options. This is the first in a series that aims to make irb less magical and more accessible. First off, I’m assuming you know your way around irb some. If you don’t then I recommend reading the pragm
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