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@vbsteven
vbsteven / Validators.kt
Created April 8, 2019 16:27
Custom Spring annotation and validator in Kotlin
package io.license.core.validation
import javax.validation.Constraint
import javax.validation.ConstraintValidator
import javax.validation.ConstraintValidatorContext
import javax.validation.Payload
import kotlin.reflect.KClass
@Target(AnnotationTarget.FIELD)
@onlurking
onlurking / programming-as-theory-building.md
Last active March 4, 2026 06:34
Programming as Theory Building - Peter Naur

Programming as Theory Building

Peter Naur

Peter Naur's classic 1985 essay "Programming as Theory Building" argues that a program is not its source code. A program is a shared mental construct (he uses the word theory) that lives in the minds of the people who work on it. If you lose the people, you lose the program. The code is merely a written representation of the program, and it's lossy, so you can't reconstruct

@craiglabenz
craiglabenz / chat_message_render_box.dart
Last active November 11, 2025 11:22
Demonstrates a custom RenderObject that draws chat messages like WhatsApp, where the `sentAt` timestamp is tucked into the last line if it fits
import 'dart:math';
import 'package:flutter/material.dart';
import 'package:flutter/rendering.dart';
void main() {
runApp(MyApp());
}
class MyApp extends StatelessWidget {
@override