Wayback Machinekoobas.hobune.stream
May JUN Jul
Previous capture 13 Next capture
2021 2022 2023
1 capture
13 Jun 22 - 13 Jun 22
sparklines
Close Help
  • Products
  • Solutions
  • Made with Unity
  • Learning
  • Support & Services
  • Community
  • Asset Store
  • Get Unity

UNITY ACCOUNT

You need a Unity Account to shop in the Online and Asset Stores, participate in the Unity Community and manage your license portfolio. Login Create account
  • Blog
  • Forums
  • Answers
  • Evangelists
  • User Groups
  • Beta Program
  • Advisory Panel

Navigation

  • Home
  • Products
  • Solutions
  • Made with Unity
  • Learning
  • Support & Services
  • Community
    • Blog
    • Forums
    • Answers
    • Evangelists
    • User Groups
    • Beta Program
    • Advisory Panel

Unity account

You need a Unity Account to shop in the Online and Asset Stores, participate in the Unity Community and manage your license portfolio. Login Create account

Language

  • Chinese
  • Spanish
  • Japanese
  • Korean
  • Portuguese
  • Ask a question
  • Spaces
    • Default
    • Help Room
    • META
    • Moderators
    • Topics
    • Questions
    • Users
    • Badges
  • Home /
avatar image
2
Question by Mathias · May 31, 2012 at 06:31 PM · performanceif-statements

Single line if statement with many conditions or several single-conditioned if statements

I apologize that this is not exactly Unity related, but I could not find any information on this elsewhere.

I have been wondering for a long time now what is the best way to use if statements. You can see what I mean by that below.

A single line if statement(contains several conditions):

 if(X && Y && W && Z && G){
     Execute();
 }

 And Many statements inside a statement.

 if(X){
     if(Y){
         if(W){
             if(Z){
                 if(G){
                     Execute();
                 }
             }
         }
     }
 }

In the end they all do the same thing I suppose, but obviously the first example looks a bit more neat than the latter, but are there any performance benefits(or any benefits for that matter) using either of these two examples?

Thank you,

Yours faithfully.

Comment
Add comment
10 |3000 characters needed characters left characters exceeded
▼
  • Viewable by all users
  • Viewable by moderators
  • Viewable by moderators and the original poster
  • Advanced visibility
Viewable by all users

1 Reply

· Add your reply
  • Sort: 
avatar image
4
Best Answer

Answer by whydoidoit · May 31, 2012 at 06:39 PM

An if with multiple parts separated by && or || only evaluates subsequent terms if it needs to - so there is no performance difference and they are equivalent.

i.e. X && Y only checks Y if X is true. X || Y only checks Y if X is false

I would strongly counsel against anything that had that much indentation - you'll tie yourself in knots trying to work out what is going on.

Comment
Add comment · Show 1 · Share
10 |3000 characters needed characters left characters exceeded
▼
  • Viewable by all users
  • Viewable by moderators
  • Viewable by moderators and the original poster
  • Advanced visibility
Viewable by all users
avatar image Mathias · May 31, 2012 at 06:59 PM 0
Share

Now that I think about it you stand correct. Thanks for the info!

Your answer

Hint: You can notify a user about this post by typing @username

Up to 2 attachments (including images) can be used with a maximum of 524.3 kB each and 1.0 MB total.

Follow this Question

Answers Answers and Comments

6 People are following this question.

avatar image avatar image avatar image avatar image avatar image avatar image

Related Questions

Performance: many IFs vs one IF with &&'s 2 Answers

Drop in performance when checking velocity of rigidbody.,Performance drop when checking velocity of rigidbody. 1 Answer

Checking to see if a loaded level is equal to a member of an integer array 1 Answer

FPS character, full body or just arms? 2 Answers

Transparent Shader performance, intermediate-advanced question? 0 Answers


Enterprise
Social Q&A

Social
Subscribe on YouTube social-youtube Follow on LinkedIn social-linkedin Follow on Twitter social-twitter Follow on Facebook social-facebook Follow on Instagram social-instagram

Footer

  • Purchase
    • Products
    • Subscription
    • Asset Store
    • Unity Gear
    • Resellers
  • Education
    • Students
    • Educators
    • Certification
    • Learn
    • Center of Excellence
  • Download
    • Unity
    • Beta Program
  • Unity Labs
    • Labs
    • Publications
  • Resources
    • Learn platform
    • Community
    • Documentation
    • Unity QA
    • FAQ
    • Services Status
    • Connect
  • About Unity
    • About Us
    • Blog
    • Events
    • Careers
    • Contact
    • Press
    • Partners
    • Affiliates
    • Security
Copyright © 2020 Unity Technologies
  • Legal
  • Privacy Policy
  • Cookies
  • Do Not Sell My Personal Information
  • Cookies Settings
"Unity", Unity logos, and other Unity trademarks are trademarks or registered trademarks of Unity Technologies or its affiliates in the U.S. and elsewhere (more info here). Other names or brands are trademarks of their respective owners.
  • Anonymous
  • Sign in
  • Create
  • Ask a question
  • Spaces
  • Default
  • Help Room
  • META
  • Moderators
  • Explore
  • Topics
  • Questions
  • Users
  • Badges