Sergey D linreal
linreal
/ ConsolidatedOps2.kt
Created
January 25, 2026 13:52
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| // Optimized: All effects in one layer, shape evaluated once | |
| @Composable | |
| fun ElegantCard(content: @Composable () -> Unit) { | |
| Card( | |
| modifier = Modifier | |
| .fillMaxWidth() | |
| .padding(16.dp) | |
| .graphicsLayer { | |
| alpha = 0.95f | |
| shape = RoundedCornerShape(12.dp) |
linreal
/ ConsolidatingOps1.kt
Created
January 25, 2026 13:52
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| // Looks innocent, but creates multiple expensive layers | |
| @Composable | |
| fun ElegantCard(content: @Composable () -> Unit) { | |
| Card( | |
| modifier = Modifier | |
| .fillMaxWidth() | |
| .padding(16.dp) | |
| .alpha(0.95f) // Layer #1: Transparency | |
| .clip(RoundedCornerShape(12.dp)) // Layer #2: Clipping path | |
| .shadow(8.dp, RoundedCornerShape(12.dp)) // Layer #3: Often another layer |
linreal
/ RedundantModifierPaddingFix.kt
Created
January 25, 2026 13:48
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| // Optimized: single source of truth for spacing | |
| Card { | |
| Column( | |
| modifier = Modifier.padding(32.dp), | |
| verticalArrangement = Arrangement.spacedBy(8.dp) // built-in spacing | |
| ) { | |
| Text("Breaking News") | |
| Text("Latest updates from the tech world...") | |
| } | |
| } |
linreal
/ ModifiersPitfallCorrect.kt
Created
January 25, 2026 13:47
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| // Optimized - precise, performant, and predictable | |
| @Composable | |
| fun ListItem(title: String, subtitle: String, onClick: () -> Unit) { | |
| Row( | |
| modifier = Modifier | |
| .fillMaxWidth() // 1. Layout: Define the width | |
| .padding(16.dp) // 2. Layout: Create space within those bounds | |
| .background( // 3. Appearance: Draw the background in the padded area | |
| color = Color.LightGray, | |
| shape = RoundedCornerShape(8.dp) |
linreal
/ ModifiersPitfall.kt
Created
January 25, 2026 13:46
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| // Common pattern - creates performance and UX issues | |
| @Composable | |
| fun ListItem(title: String, subtitle: String, onClick: () -> Unit) { | |
| Row( | |
| modifier = Modifier | |
| .clickable { onClick() } // 1. Interaction first? | |
| .fillMaxWidth() // 2. Then Layout... | |
| .padding(16.dp) // 3. ...and more layout | |
| .background( // 4. Finally, appearance | |
| color = Color.LightGray, |
linreal
/ ModifiersReordered.kt
Created
January 25, 2026 13:42
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| // After: same visual, fewer layers, bounded ripple | |
| Modifier | |
| .fillMaxWidth() // layout first | |
| .padding(12.dp) | |
| .graphicsLayer { // consolidate heavy ops | |
| alpha = 0.98f | |
| shape = RoundedCornerShape(12.dp) | |
| clip = true | |
| shadowElevation = 4.dp.toPx() | |
| } |
linreal
/ ModifierEx.kt
Created
January 25, 2026 13:35
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| // Before: A typical "just make it work" modifier chain | |
| // Before: "works", but heavier than it looks | |
| Modifier | |
| .clickable { onMessageClick() } // hit-test too early | |
| .padding(horizontal = 12.dp, vertical = 6.dp) | |
| .background( | |
| color = MaterialTheme.colorScheme.surfaceVariant, | |
| shape = RoundedCornerShape(12.dp) | |
| ) | |
| .fillMaxWidth() |
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| import androidx.compose.animation.core.FastOutSlowInEasing | |
| import androidx.compose.animation.core.LinearEasing | |
| import androidx.compose.animation.core.LinearOutSlowInEasing | |
| import androidx.compose.animation.core.RepeatMode | |
| import androidx.compose.animation.core.StartOffset | |
| import androidx.compose.animation.core.animateFloat | |
| import androidx.compose.animation.core.infiniteRepeatable | |
| import androidx.compose.animation.core.rememberInfiniteTransition | |
| import androidx.compose.animation.core.tween |
linreal
/ ShowCarousels.kt
Created
January 6, 2026 13:21
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| @OptIn(ExperimentalFoundationApi::class) | |
| @Composable | |
| fun ShowCarousels(sections: List<Section>) { | |
| LazyColumn( | |
| modifier = Modifier.fillMaxSize() | |
| ) { | |
| items(sections, key = { it.id }) { section -> | |
| val rowState = rememberLazyListState( | |
| prefetchStrategy = LazyListPrefetchStrategy( | |
| nestedPrefetchItemCount = 6) |
linreal
/ getItemViewType.kt
Last active
January 6, 2026 13:19
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| // RecyclerView | |
| override fun getItemViewType(position: Int): Int { | |
| return when (items[position]) { | |
| is TextMessage -> VIEW_TYPE_TEXT | |
| is ImageMessage -> VIEW_TYPE_IMAGE | |
| is VideoMessage -> VIEW_TYPE_VIDEO | |
| else -> VIEW_TYPE_UNKNOWN | |
| } | |
| } |
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