JH108

I’ve got a question on compose navigation. I know that navigation is supposed to be event based, user presses X button to go to Y screen, etc...

This is all well and good until I got to implementing more complex state with login status, whether they've onboarded, etc...

My first approach was to separate the main flows of the app into separate NavGraphs and then dynamically set the start destination of the navigation host based on state. So if the state showed the user was unauthenticated then the LoginGraph is set as the start destination, if they are authenticated but not finished onboarding then they get the OnboardingGraph.

This appeared to be working but what I hadn't realized is that when the app was first initialized the navigation host would touch at least two or three graphs before the state was fully hydrated.

I'm wondering how I would handle the scenario of needing to place the user on the right path based on some state without actually making the navgation based on state instead of events.

JH108

// TLDR: If you use list - [element] then it will remove the first occurrance of that element.
//  If you use list - listOf([element]) then it will remove all occrrances of that element.
//  If you use list + [element] then it will append regardless if that element already matches one in the list.
fun main() {
    var t = listOf<Boolean>()

    t = t + true
    println("t + true: $t") // t + true: [true]
    t = t + false
    println("t + false: $t") // t + false: [true, false]

JH108

data class DB(val entities: Map<String, Entity>, val daos: List<Dao>)

typealias ForeignKey = Pair<String, String>

class PersonDao(val db: DB) {
  fun getAll(): List<PersonEntity> {
    val peopleTable = db.entities["people"]
    
    return peopleTable ?: listOf()
  }

JH108

package com.me.app

import androidx.compose.foundation.interaction.MutableInteractionSource
import androidx.compose.foundation.shape.ZeroCornerSize
import androidx.compose.foundation.text.KeyboardActions
import androidx.compose.foundation.text.KeyboardOptions
import androidx.compose.material.*
import androidx.compose.runtime.*
import androidx.compose.ui.Modifier
import androidx.compose.ui.focus.onFocusChanged

JH108

import kotlinx.coroutines.*
import kotlinx.coroutines.flow.*
import kotlin.properties.Delegates

fun separator(title: String?) {
    println()
    
    if (title != null) {
        val truncatedTitle = if (title.length > 80) title.substring(0, 78) else title
        val beforeAfter = (80 - truncatedTitle.length) / 2

JH108

@Composable
fun ChipStack(modifier: Modifier = Modifier) {
    val size = 80.dp
    val sizeModifier = Modifier.size(size)
    val colors = listOf(Color.Green, Color.Yellow, Color.Cyan, Color.Magenta, Color.LightGray)
    val width = (size / 2) * (colors.size + 1)
    Box(modifier = modifier.size(width, size)
            .graphicsLayer {
                alpha = 0.99f // slight alpha to force compositing layer
            },

JH108

import kotlinx.coroutines.*
import kotlinx.coroutines.channels.*
import kotlinx.coroutines.selects.*
import java.text.*
import java.util.*

// Define variables
val names = arrayOf("What", "Even", "is", "this🤯")
val longName = "Some random function name"

JH108

// This doesn't seem like it would be secure since whatever "key" was being stored on the device 
// would have to have either been generated by the device or requested by the device
export const encryptXOR = (text, key) => {
  const bytes = utf8.encode(text);
  const output = [];
 
  for (let i = 0; i < bytes.length; i++) {
    output[i] = String.fromCharCode(
      bytes[i].charCodeAt(0) ^ key[i % key.length].charCodeAt(0)
    );

JH108

var a = null;

function b(c) { var d = ['abc']; return d.find(e => e === c)}

if (Boolean(a)) console.log('True'); // True

if (!Boolean(a)) console.log('True'); // nothing

b('h') // undefined

JH108

cloc . --exclude-dir node_modules,android,ios,lib | grep Script | sed 's/\n/\n/g' | sed 's/.*\ //g'