Dynamic Method Definitions

Dynamic Method Definitions | Tenderlovemaking

Dynamic Method Definitions

2013-03-03 @ 16:52 Dynamic Method Definitions TL;DR: depending on your app, using define_method is faster on boot, consumes less memory, and probably doesn’t signigicantly impact performance. Throughout the Rails code base, I typically see dynamic methods defined using class_eval . What I mean by “dynamic methods” is methods with names or bodies that are calculated at runtime, then defined. For example, something like this: class Foo class_eval <<EORUBY, __FILE__, __LINE__ + 1 def wow_#{Time.now.to_i} # ... end EORUBY end I’m not sure why they are define this way versus using define_method . Why don’t we compare and contrast defining methods using class_eval and define_method ? The tests I’ll do here use MRI, Ruby 2.0.0. Definition Performance When defining a method, is it faster to use class_eval or define_method ? Here is a trivial benchmark where we simulate defining 10...

Full article: http://tenderlovemaking.com/2013/03/03/dynamic_method_def...

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@galenking » 17 Mar '13, 6pm
RT @chris_saunders: If you're reading or have read Ruby Under a Microscope, this is a nice little addition about dynamic method defns [link]
@chris_saunders » 17 Mar '13, 1pm
If you're reading or have read Ruby Under a Microscope, this is a nice little addition about dynamic method defns [link]
@fvollero » 13 Mar '13, 8am
RT @aforni: Ruby dynamic method definitions benchmarks | Tenderlovemaking [link]
@aforni » 13 Mar '13, 8am
Ruby dynamic method definitions benchmarks | Tenderlovemaking [link]
@steveklabnik » 12 Mar '13, 9pm
@alex_gaynor in this case, yes: [link]
@candidosales » 12 Mar '13, 1pm
RT @anderson_leite: Dynamic Method Definitions -> [link] #ruby
@iR3 » 11 Mar '13, 10am
ほ〜 #sendagayarb で教えてもらった。 / “Dynamic Method Definitions | Tenderlovemaking” [link]
@myobie » 09 Mar '13, 10pm
RT @tpitale: Yet another amazing article by @tenderlove! [link] Thank you, Aaron!
@tpitale » 09 Mar '13, 5pm
Yet another amazing article by @tenderlove! [link] Thank you, Aaron!
@avsej » 08 Mar '13, 8pm
[link] good illustration why you should prefer define_method over the class_eval
@ahastudio » 08 Mar '13, 8am
RT @sungheeekang: Dynamic method definitions [link] 몇몇 경우를 제외하고는 define_method가 class_eval 보다 더 좋다고 한다.
@sungheeekang » 08 Mar '13, 8am
Dynamic method definitions [link] 몇몇 경우를 제외하고는 define_method가 class_eval 보다 더 좋다고 한다.
@matteocollina » 08 Mar '13, 8am
Dynamic Method Definitions in Ruby. [link] | define_method wins over class_eval, if you use it carefully.
@azukiwasher » 08 Mar '13, 1am
define_method は class_eval より速いしメモリーも使わないけど、オブジェクトへのどでかいリファレンスを持つ closure を作るのから気をつけよう。[link]
@bungoman » 07 Mar '13, 11pm
[link] #ThisIsWhyImStillANewb
@austinfrmboston » 07 Mar '13, 10pm
@tenderlove redeems define_method in epic ruby 2.0 rematch of an ancient grudge. [link]
@jphenow » 07 Mar '13, 9pm
Careful with `define_method` and large Objects laying around [link]
@carlossanchezp » 07 Mar '13, 8pm
RubyOnRail Dynamic Method definitions: [link]
@johnbarton » 07 Mar '13, 8pm
Looks like the @envato coding standard will need an update re: eval vs define_method because of [link] /cc @notahat
@whitequark » 07 Mar '13, 8pm
RT @postmodern_mod3: [link] define_method and avoiding eval() injection, another reason to drop 1.8.7 support and embrace 1.9. #ruby
@postmodern_mod3 » 07 Mar '13, 7pm
[link] define_method and avoiding eval() injection, another reason to drop 1.8.7 support and embrace 1.9. #ruby
@postmodern_mod3 » 07 Mar '13, 7pm
[link] Myth Busted: define_method *does not* make your code slower. #ruby
@whitequark » 07 Mar '13, 2pm
Use define_method instead of eval [link]
@drewolson » 07 Mar '13, 2pm
this makes me happy [link]
@rbudiharso » 07 Mar '13, 2pm
Check this out... Dynamic Method Definitions [link]
@iHiD » 07 Mar '13, 1pm
@tenderlove You have a typo of "signigicantly" in the tl;dr of [link] It's a really interesting read - thanks :)
@RubyManiac » 07 Mar '13, 1pm
Using define_method is faster sometimes [link]
@sostenes89 » 07 Mar '13, 1pm
RT @fnando: Dynamic Method Definitions ~ [link] #fb
@brunoadacosta » 07 Mar '13, 1pm
RT @fnando: Dynamic Method Definitions ~ [link]
@tkareine » 07 Mar '13, 10am
define_method vs. class_eval for defining methods dynamically in #ruby by @tenderlove [link]
@jhund » 06 Mar '13, 4pm
In depth analysis of dynamic method definition in Ruby (define_method vs class_eval) [link]
@rjkaes » 05 Mar '13, 4am
Dynamic Method Definitions | Tenderlovemaking [link] (via Instapaper)
@toamit » 04 Mar '13, 7pm
Dynamic Methods in Ruby "define_method" v/s "class_eval" [link] by @tenderlove
@nort » 04 Mar '13, 4pm
Who knew that class_eval and define_method were so similar yet so different (via @tenderlove) [link]
@ravidsrk » 04 Mar '13, 1pm
Dynamic Method Definitions | Tenderlovemaking [link]
@pat_shaughnessy » 04 Mar '13, 1pm
.@tenderlove compares define_method and class_eval using a series of experiments: "Dynamic Method Definitions" [link]
@saturnflyer » 04 Mar '13, 10am
performance impact of dynamically defining methods in ruby [link]
@apeacox » 04 Mar '13, 10am
Dynamic Method Definitions in #ruby [link]
@S_2K » 04 Mar '13, 8am
Interesting comparison of define_method and class_eval to dynamically define methods: [link] #Ruby
@BlmLcu » 04 Mar '13, 6am
define_method vs class_eval: [link] - the final caveat was especially interesting
@pierre_jambet » 04 Mar '13, 3am
class_eval vs define_method : [link]
@JapanTechFeeds » 04 Mar '13, 2am
Dynamic Method Definitions [blog-tech] - Tender Lovemaking：TL;DR: depending on your app, using define_method is fas.. [link]
@id_ruby » 04 Mar '13, 10am
Dynamic Method Definitions [link]
@JapanTechFeeds » 04 Mar '13, 5am
Dynamic Method Definitions [blog-tech] - Tender Lovemaking：TL;DR: depending on your app, using define_method is fas.. [link]