A modern programming language that makes developers happier.

kotlinlang

`Day31`
• Finished Lesson9
    ◦ Room db review (<https://developer.android.com/training/data-storage/room#kotlin|doc>)
    ◦ Repository &amp; Offline caching
    ◦ WorkManager
        ▪︎ Background thread(ex. network things) vs. Background works (When app is not running or in background. / ex. upload logs, process data, upload metrics, pre-fetch contents)
            • Background work works in background thread
        ▪︎ Constraints should be specified (When to work / ex. charging, device idle, on wifi, etc.)
        ▪︎ Efficient battery usage (Optimize constraints for background works --&gt; Let it use less cpu, disk. low network. schedule to run rarely. / Ex. prefetching done nightly)
        ▪︎ Work request (periodic / )
            • WorkManager.getInstance.enqueu() - Schedule work
• Etc.
    ◦ (recap) _Transformations.map_ - converts one live data to another
    ◦ (recap) &lt;scope&gt;.launch{} --&gt; creates coroutine
`Self-Comment`
• Recalling that the main reason I had a hard time yesterday was because I didn’t review data binding part in the right time. I just stopped lesson 9 and reviewed the Room db part. This time, I didn’t do rough googling in korean, but instead just read the official android document and took notes by hand. Much better, much clearer.
• Must review data binding in this way too.. (Goal till this weekend.)
• Understand dependency injection thing --&gt; Goal: understand this sentence thoroughly ” _Make your repo take a VideosDatabase constructor parameter, this way you won’t have any dependencies on Context in your repository (so called dependency injection)._”
`Goals Tomorrow`
• Halfway thru Lesson 10
• Check on data binding, dependency injection (<https://developer.android.com/training/dependency-injection/manual?authuser=1|link>)
• But most importantly, having a nice first day of work..!

<https://developer.android.com/training/dependency-injection/manual?authuser=1>

This has some good explanation on DI. Understand what is referred to as a dependency and it'll all come together

Ohh I didn’t check it yet but that’s exactly what I need.. _” Understand what is referred to as a dependency and it’ll all come together”,_ so I’ll put that into tomorrow’s to-do. Thanks Bryannn