nvALT syncs with Simplenote. This is handy because nvALT is macOS only. So you can use the Simplenote iOS app to keep your extra brain nearby on the go.
Simplenote also has a macOS app. You may think: Why not use the Simplenote desktop application? Because — it’s not quite as fast. We’re talking milliseconds, but it’s enough that you feel the difference. It’s the difference between the $1000 Japanese garden shears and the $150 garden shears. They both cut just fine, but if you work in the garden all day, you will (probably?) feel the difference.
nvALT は Simplenote と同期できます。nvALT は mac だけのアプリなのでこれは便利です。よって、外出時に、Simplenote の iOS アプリを利用することができます。
Simplenote には mac OS アプリもあります。どうして、Simplenote のデスクトップアプリを使わないのか、とあなたは思うかもしれません。速さが違います。ミリ秒レベルの話ですが違いを認識するには十分な速さです。
Create a service locator that contains references to the services and that encapsulates the logic that locates them. In your classes, use the service locator to obtain service instances
The choice between Service Locator and Dependency Injection is less important than the principle of separating service configuration from the use of services within an application.
Service Locator と Dependency Injection のどちらを選択するかは、アプリケーション内でサービスの設定とそれの利用を分離するという原則よりも重要ではありません。
Service location is not an anti-pattern. There are anti-patterns that involve use of a service locator along with other similar constructs. There are anti patterns that involve the use of DI. Most devises we use in programming involve both (virtuous) patterns, and anti-patterns, which is really just a grand way of saying pros and cons. Generally speaking people who summarise the world in terms of only pros or only cons are said to be engaging in splitting.
Service Locator 自体はアンチパターンではありません。 他の要素と共に Service Locator を使用するときにアンチパターンが存在します。 DI を利用する場合にもアンチパターンがあります。 私たちがプログラミングで使用するほとんどの案は、良いパターンと悪いパターンの両方を含みます。 一般的に言えば、長所のみまたは短所のみの観点から要約する人々は、分割に従事していると言われています。
Splitting (also called black and white thinking or all-or-nothing thinking) is the failure in a person’s thinking to bring together both positive and negative qualities of the self and others into a cohesive, realistic whole. It is a common defense mechanism used by many people. The individual tends to think in extremes (i.e., an individual’s actions and motivations are all good or all bad with no middle ground.)
I need to take a look about and see what discussions there may be on the subject of polarised views and whether they are more prevalent among programmers than other professions.
Dependency injection is all the rage now on Android but there are also some other patterns worth considering for managing dependencies. A Service Locator is a very simple pattern which can be implemented in few lines (50?) of code and can sometimes be a viable alternative or complement to DI frameworks like Dagger 2.
依存性注入は現在Android上で大流行していますが、依存性を管理するために考慮する価値のある他のパターンもいくつかあります。 Service Locatorは、ほんの数行（50？）のコードで実装できる非常に単純なパターンであり、Dagger 2のようなDIフレームワークに代わる実行可能な代替手段である場合もあります。
The Service Locator is considered by some (or many) as an anti-pattern, but I would argue that you always have to choose the right tool for the job (and it’s good to have a variety of tools in your toolbox). In some cases the Service Locator can be an extremely simple and efficient solution. It can also get handy in case you have constraints like APK size, method count, build speed or overall complexity.
Service Locatorは、一部（または多数）によってアンチパターンと見なされていますが、仕事に適したツールを常に選択する必要があると思います（ツールボックスにさまざまなツールを用意しておくことをお勧めします）。 場合によっては、Service Locatorは非常に単純で効率的なソリューションになります。 APKサイズ、メソッド数、ビルド速度、全体的な複雑さなどの制約がある場合にも便利です。
‘Dependency Injection’ is only one form of the D in the SOLID design principles, ie. Dependency Inversion. I do highly recommend Dependency Inversion in any application that has a need to interact with dynamic data, or that has any level of business logic. Both Service Locator and Dependency Injection can be an anti-pattern or a viable pattern depending on the scenario.
- kotlin
- coroutine
- single activity
- architecture component
- navigation component + fragment
- presentetion layer(per page) = fragment + view model
- reactive ui = live data + data binding
- data layer = repositpory + local(room) + remote
- datalayer one shot operations(no listener or data streams)
suspend fun showSomeData() = coroutineScope {
val data = async(Dispatchers.IO) { // <- extension on current scope
// ... load some UI data for the Main thread ...
}
withContext(Dispatchers.Main) {
doSomeWork()
val result = data.await()
display(result)
}
}
