nimaiwalsh

Software Engineering at the Tipping Point — Adam Bender (Google)

Core Concept: Software Ecology

Software ecology is the holistic study of socio-technical ecosystems that produce software — systems made of both people and technology that are deeply interlinked. You can't understand one without the other.

---

Key Ideas

nimaiwalsh

Notes from Effective Kotlin: Best Practice

Safety

Limit mutability

The general rule is that one should not create unnecessary ways to mutate a state. Every way to mutate a state is a cost. Every mutation point needs to be understood and maintained. We prefer to limit mutability. General rules:

• Prefer val over var.

nimaiwalsh

fun <T : View> Activity.bindView(viewId: Int) =
    lazy { this.findViewById<T>(viewId) }

nimaiwalsh

/**
 * Modifies a layout to ignore irs parents horizontal padding. This is useful if you have an item in a column, such as
 * a divider, that does not want to be constrained by the parents padding
 */
fun Modifier.ignoreHorizontalParentPadding(horizontal: Dp): Modifier {
    return this.layout { measurable, constraints ->
        val overriddenWidth = constraints.maxWidth + 2 * horizontal.roundToPx()
        val placeable = measurable.measure(constraints.copy(maxWidth = overriddenWidth))
        layout(placeable.width, placeable.height) {
            placeable.place(0, 0)

nimaiwalsh

# Remove directories and files that aren’t in git from your own local working copy you can do so by running
git clean -d -f -x

nimaiwalsh

import android.content.Context
import java.time.temporal.ChronoField.DAY_OF_YEAR
import java.time.temporal.ChronoField.INSTANT_SECONDS
import java.time.temporal.ChronoField.YEAR
import java.time.temporal.TemporalAccessor
import java.util.Locale
import javax.inject.Inject

/**
 * Custom date and time formatter implementing custom formatting rules.

nimaiwalsh

import android.content.Context
import androidx.annotation.PluralsRes
import androidx.annotation.StringRes

/** Provides access to localized strings and text using the resources from the application context. */
class AndroidStringsProvider @Inject constructor(
    private val context: Context
): StringsProvider {

    override fun get(@StringRes resId: Int): String {

nimaiwalsh

/**
 *
 * Safely run some delayed tasks in a view as they will be tied to the lifecycle.
 *
 * @param durationInMillis delay task in millisecons
 * @param dispatcher CoroutineDispatcher, defaults to Dispatchers.Main as view work is done on Main thread
 * @param block the block of work to be done
 *
 * example:
 *