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What happens if a payment failed? why? where are we logging it? what would you do right now if payment failed and someone asked you to look into it?
Consider:
When you do track it in a database…
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# Listen to multiple events in a single class in Laravel — Amit Merchant — A blog on PHP, JavaScript, and more
The Observer design pattern is one of the twenty-three well-known “Gang of Four” design …
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### Description
Created app-location and app-route components:
```
```
Added a few buttons:
```
about
services
home
```
Created an observer…
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As far as I understand, reactive streams [1] are an extension of the observer pattern, with implementions of reactive `Observable`, `ObservableList`, `ObservableSet` and `ObservableMap` in [2].
So,…
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## 문제
`9.2 람다로 객체지향 디자인 패턴 리팩터링하기` 에서 람다식을 이용해 디자인 패턴을 제거하거나 간결하게 만드는 예제를 살펴봤다.
람다식을 적용하는 예제를 이해하기 전에 디자인 패턴에 대한 확실한 이해가 먼저라는 생각이 들었다.
다양한 예제를 통해 **옵저버 패턴이란 무엇인지** 이해하고 **옵저버 패턴의 장단점**에 대해 알아보자…
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We need to clarify
- the callback signature: probably just `(obj, field)` for get and `(obj, field, value, has_changed)` for set.
- should the observer be called in the same thread ? probably ye…
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As the title states, a raws only option would be amazing, so I can tell exactly HOW MANY copper bars will be needed to craft 100 wooden cabinets etc., without having to read the whole list.
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https://github.com/jackfrost13/observer-pattern/blob/7d06046d335df2e9cc39da0faa33b32463f3d0c9/main.dart#L7
Whenever a collaborator has to ask what does `cd` mean, the code is not clean. Always pref…
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## 🙋♂ Question
I am trying to buld a simple Subject/Observer pattern together with immerjs to ensure consistent update propagation in my project.
Right now immerjs is causing some trouble because…
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the aim of the task is to classify the role of developer in Github open source community. Based on the developer's behavior and influence in the project, the developer's role can be roughly divided in…