go-patterns | design patterns in go world | Architecture library
kandi X-RAY | go-patterns Summary
kandi X-RAY | go-patterns Summary
design patterns in go world
Support
Quality
Security
License
Reuse
Top functions reviewed by kandi - BETA
- newEvaluator creates a new evaluator
- getLoadBalancer returns the current load balancer .
- newPhotoViewerProxy creates a new proxy .
- newSimplePaginator returns a new simplePaginator .
- newShape returns a new shape for the given type .
- getPhoto urls
- newAwardCheckController creates a new grant check controller .
- newMobilePhoneManager returns a new mobile phone manager .
- newFacade returns a new API facade .
- newGameState returns a new gameState object .
go-patterns Key Features
go-patterns Examples and Code Snippets
Community Discussions
Trending Discussions on go-patterns
QUESTION
I try to rebuild this example: https://blog.roseman.org.uk/2010/01/11/django-patterns-part-2-efficient-reverse-lookups/
I have a model "Product" and a model "Order". Order has a foreignkey to "product". So for 1 Product I have N Orders
In my template I have to display a lot of information so I would like to avoid to do "for order in Product.order_set.all()" in my template
In my template, if I write :
...ANSWER
Answered 2019-May-19 at 19:17That is logical, since here Django interprets i not as the variable, but as the an identifier, so it aims to access object_list.i, or object_list['i'], not object_list.1 for example.
You however do not need i here, you can just access the related_items of the object, like:
QUESTION
I've just read the chapter on Creational patterns in the book Design Patterns in golang. These are:
- factory
- abstract factory
- prototype
- singleton
- builder
I've created a repository on github to list all of them. I've looked for other repositories like mine:
Some list object-pool as a pattern, others simple-factory and factory-method. Does there exist an official list of creational patterns in go? Is it important to know the list, or is it more important to know what is possible and be able to use right code in right context? With or without know all the patterns in the world?
And, ... what is the difference between prototype and object pool patterns? They look very similar to me.
...ANSWER
Answered 2018-Jun-14 at 20:14Design Patterns do not exist in isolation, they have relationships of their own. So for example, an object pool might use a factory or prototype to initially fill the pool or deal with exhaustion. The objects in that pool might conform to the command pattern, or be examples of the builder pattern.
In practice you cannot possibly know all the details of all patterns, the most important thing to know is the intent. What the pattern achieves. When using the pattern the remaining details can and should be taken from a pattern catalogue, over time you will learn some patterns comprehensively and reference others.
A Pattern Catalogue is the a collection of fully documented Design Patterns. The GoF Design Patterns book is probably the most famous Pattern Catalogue, however the book you mention and even github repositories can fulfil the same purpose.
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install go-patterns
Support
Reuse Trending Solutions
Find, review, and download reusable Libraries, Code Snippets, Cloud APIs from over 650 million Knowledge Items
Find more librariesStay Updated
Subscribe to our newsletter for trending solutions and developer bootcamps
Share this Page
