sketchucation logo sketchucation
    • Login
    ℹ️ Licensed Extensions | FredoBatch, ElevationProfile, FredoSketch, LayOps, MatSim and Pic2Shape will require license from Sept 1st More Info

    Optimization Tips

    Scheduled Pinned Locked Moved Developers' Forum
    110 Posts 22 Posters 168.8k Views 22 Watching
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as topic
    Log in to reply
    This topic has been deleted. Only users with topic management privileges can see it.
    • AdamBA Offline
      AdamB
      last edited by

      Seems an arbitrary (and wrong) assumption that inline code requires removing whitespace. Why not just leave in what the author wrote rather than trying to second guess? Whatever.

      Developer of LightUp Click for website

      1 Reply Last reply Reply Quote 0
      • thomthomT Offline
        thomthom
        last edited by

        Agree - whitespace eating of ruby has bothered me as well. Will ask if it can be changed.

        Thomas Thomassen β€” SketchUp Monkey & Coding addict
        List of my plugins and link to the CookieWare fund

        1 Reply Last reply Reply Quote 0
        • AdamBA Offline
          AdamB
          last edited by

          @thomthom said:

          Didn't realise Ruby would recreate the variables for each iteration. I'd thought it'd keep them for the duration of the loop...

          The closure you create with curly braces is handled as a first class object and passed as an argument to the iterator. This means the scope of any variables you mention inside that block is limited to that block - it must create them each time. 😞

          Developer of LightUp Click for website

          1 Reply Last reply Reply Quote 0
          • thomthomT Offline
            thomthom
            last edited by

            Is that why each is slow?

            Thomas Thomassen β€” SketchUp Monkey & Coding addict
            List of my plugins and link to the CookieWare fund

            1 Reply Last reply Reply Quote 0
            • GaieusG Offline
              Gaieus
              last edited by

              Guys, Thom asked if we can do something with these white spaces but I have to say it is most probable that we cannot. I is hard coded somewhere in the php script of the forum software and even if we could tweak that, it would be impossible to keep it through upgrades (which is very due soon anyway).

              Is the code tag not good (apart from that scrolling annoyance)?

              Gai...

              1 Reply Last reply Reply Quote 0
              • thomthomT Offline
                thomthom
                last edited by

                It's ok. I just hoped there was a config UI for BBCode tags on the forum. Thought it was normal. The code tag is ok, just figured if it could be changed...

                I don't suppose there are forum plugins that can be installed? having the code block apply syntax highlighting would be a delight for us coders. Such as this:

                http://code.google.com/p/syntaxhighlighter/

                http://syntaxhighlighter.googlecode.com/files/Overview01.png

                Edit: what version of phpBB does SCF run? I'm looking at this: http://www.phpbb.com/kb/article/adding-custom-bbcodes-in-phpbb3/ from this it appear to be that it'd be a matter of setting the HTML replacement for the ruby tag to not collapse white space using CSS.

                Replacement sample something like this:
                <span style="white-space:pre;">{TEXT}</span>

                Thomas Thomassen β€” SketchUp Monkey & Coding addict
                List of my plugins and link to the CookieWare fund

                1 Reply Last reply Reply Quote 0
                • GaieusG Offline
                  Gaieus
                  last edited by

                  I can imagine you would like that syntax highlight! I use Notepad++ and know what a difference it is!

                  Coen and Tavi should be spoken to about these things.

                  Gai...

                  1 Reply Last reply Reply Quote 0
                  • thomthomT Offline
                    thomthom
                    last edited by

                    @adamb said:

                    I see a lot of SU scripts using some of the more compact iterators Ruby iterators. So they might read nice, but they're often slower than just simple for-loops.

                    shingara.fr

                    This domain may be for sale!

                    favicon

                    (blog.shingara.fr)

                    In regard to this should one init the variables used by for in to speed up things? or is that not needed?

                    Would this
                    ` x = 0
                    for x in collection

                    ...

                    endbe faster than for x in collection

                    ...

                    end`

                    Thomas Thomassen β€” SketchUp Monkey & Coding addict
                    List of my plugins and link to the CookieWare fund

                    1 Reply Last reply Reply Quote 0
                    • AdamBA Offline
                      AdamB
                      last edited by

                      no

                      Developer of LightUp Click for website

                      1 Reply Last reply Reply Quote 0
                      • J Offline
                        Jim
                        last edited by

                        I've always thought for used each under the hood.

                        http://blog.grayproductions.net/articles/the_evils_of_the_for_loop

                        for loops do not have their own scope - the loop variable and any variables created in the loop become available (or are over-written) in the current scope.

                        With .each, variables are local to the block {..}

                        Hi

                        1 Reply Last reply Reply Quote 0
                        • thomthomT Offline
                          thomthom
                          last edited by

                          @jim said:

                          I've always thought for used each under the hood.

                          http://blog.grayproductions.net/articles/the_evils_of_the_for_loop

                          for loops do not have their own scope - the loop variable and any variables created in the loop become available (or are over-written) in the current scope.

                          If you click the method names in the Ruby API manual you get to see the sourcecode:
                          http://ruby-doc.org/core/classes/Array.html#M002173

                          Thomas Thomassen β€” SketchUp Monkey & Coding addict
                          List of my plugins and link to the CookieWare fund

                          1 Reply Last reply Reply Quote 0
                          • J Offline
                            Jim
                            last edited by

                            That's showing a for loop in the c language.

                            Hi

                            1 Reply Last reply Reply Quote 0
                            • thomthomT Offline
                              thomthom
                              last edited by

                              That's what it's doing under the hood.

                              Thomas Thomassen β€” SketchUp Monkey & Coding addict
                              List of my plugins and link to the CookieWare fund

                              1 Reply Last reply Reply Quote 0
                              • J Offline
                                Jim
                                last edited by

                                @thomthom said:

                                That's what it's doing under the hood.

                                Right, so where is the definition for the for function?

                                The answer is there isn't one because for is not a function, but is "sugar". The for loop in Ruby really uses the .each method behind the scenes.

                                Although, I can't recall where I learned that. The link to the blog article mentions it, though.

                                Hi

                                1 Reply Last reply Reply Quote 0
                                • tbdT Offline
                                  tbd
                                  last edited by

                                  speaking of each vs for :

                                  loop1 = []
                                  loop2 = []
                                  
                                  calls = ["one", "two", "three"]
                                  
                                  calls.each do |c|
                                    loop1 << Proc.new { puts c }
                                  end
                                  
                                  for c in calls
                                    loop2 << Proc.new { puts c }
                                  end
                                  
                                  loop1[1].call #=> "two"
                                  loop2[1].call #=> "three"
                                  

                                  SketchUp Ruby Consultant | Podium 1.x developer
                                  http://plugins.ro

                                  1 Reply Last reply Reply Quote 0
                                  • Dan RathbunD Offline
                                    Dan Rathbun
                                    last edited by

                                    @jim said:

                                    The for loop in Ruby really uses the .each method behind the scenes. ... Although, I can't recall where I learned that.

                                    'Pick-Axe' > For ... In expressions

                                    I'm not here much anymore.

                                    1 Reply Last reply Reply Quote 0
                                    • J Offline
                                      Jim
                                      last edited by

                                      I guess to get back on topic, for loops are not faster then .each iterators. The performance must have to do with how the for loop variables are not loop scoped, as in each.

                                      Hi

                                      1 Reply Last reply Reply Quote 0
                                      • thomthomT Offline
                                        thomthom
                                        last edited by

                                        Came across this link:
                                        http://www.h3rald.com/articles/efficient-ruby-code-shortcut-review/

                                        On that list it says
                                        @unknownuser said:

                                        Use parallel assignment (a, b = 5, 6) where applicable

                                        while at this link:
                                        http://www.hxa.name/articles/content/ruby-speed-guide_hxa7241_2007.html

                                        @unknownuser said:

                                        Avoid parallel assignment

                                        πŸ˜’

                                        Thomas Thomassen β€” SketchUp Monkey & Coding addict
                                        List of my plugins and link to the CookieWare fund

                                        1 Reply Last reply Reply Quote 0
                                        • thomthomT Offline
                                          thomthom
                                          last edited by

                                          @thomthom said:

                                          Came across this link:
                                          http://www.h3rald.com/articles/efficient-ruby-code-shortcut-review/

                                          On that list it says
                                          @unknownuser said:

                                          Use parallel assignment (a, b = 5, 6) where applicable

                                          while at this link:
                                          http://www.hxa.name/articles/content/ruby-speed-guide_hxa7241_2007.html

                                          @unknownuser said:

                                          Avoid parallel assignment

                                          πŸ˜’

                                          I just bought the ebook and that review summary was wrong - parallel assignments are not recommended for performance important tasks.
                                          Interesting read that book btw.

                                          Thomas Thomassen β€” SketchUp Monkey & Coding addict
                                          List of my plugins and link to the CookieWare fund

                                          1 Reply Last reply Reply Quote 0
                                          • M Offline
                                            MartinRinehart
                                            last edited by

                                            Let's see - for performance I'm going to avoid iterations, arrays, hashes and objects.

                                            What's left?

                                            Author, Edges to Rubies - The Complete SketchUp Tutorial at http://www.MartinRinehart.com/models/tutorial.

                                            1 Reply Last reply Reply Quote 0
                                            • 1
                                            • 2
                                            • 3
                                            • 4
                                            • 5
                                            • 6
                                            • 2 / 6
                                            • First post
                                              Last post
                                            Buy SketchPlus
                                            Buy SUbD
                                            Buy WrapR
                                            Buy eBook
                                            Buy Modelur
                                            Buy Vertex Tools
                                            Buy SketchCuisine
                                            Buy FormFonts

                                            Advertisement