osaxma’s gists

osaxma / transitive_reduction.dart

Last active February 7, 2024 08:39

Transitive Reduction Implementation in Dart (Harry Hsu)

	/// Return the [Transitive Reduction] for a directed acyclic graph (DAG).
	///
	/// This function assumes the graph is acyclic and it doesn't check for that.
	///
	/// [nodes] should be a list of all nodes in the graph.
	///
	/// [hasPath] should return `true` when the first argument has a path to the second argument.
	/// > Note: [hasPath] should return `true` when there is a path, not only an edge.
	///
	/// This function is a port of [jgrapht][] implementation of Harry Hsu's paper:

osaxma / resolve_ast_from_string.dart

Created January 15, 2024 12:46

generate a resolved AST fromString

	import 'package:analyzer/dart/analysis/analysis_context_collection.dart';
	import 'package:analyzer/dart/analysis/results.dart';
	import 'package:analyzer/file_system/overlay_file_system.dart';
	import 'package:analyzer/file_system/physical_file_system.dart';

	final string = '''
	class App {
	final String id;
	final String name;

osaxma / main.dart

Created September 21, 2022 14:20

Replace Western Arabic Numerals with Western ones

	import 'package:flutter/material.dart';
	import 'package:flutter/services.dart';

	class TextFieldExample extends StatelessWidget {
	@override
	Widget build(BuildContext context) {
	return TextField(
	inputFormatters: <TextInputFormatter>[
	/// Replaces: any of [٠١٢٣٤٥٦٧٨٩] with its respective [0123456789]
	...replaceArabicNumeralsFromEastToWestFormatters,

osaxma / container_full_width_SO.dart

Created February 15, 2022 23:54

SO question: https://stackoverflow.com/q/71134564/10976714

	// for SO question: https://stackoverflow.com/q/71134564/10976714
	// ignore_for_file: avoid_function_literals_in_foreach_calls, avoid_print

	import 'package:flutter/material.dart';

	void main() {
	runApp(const ContainerWidthExampleApp());
	}

	class ContainerWidthExampleApp extends StatelessWidget {

osaxma / nested_topics_example.dart

Created January 23, 2022 15:27

nested topic example for SO https://stackoverflow.com/q/70823362/10976714

	import 'package:flutter/material.dart';

	void main() {
	runApp(const NestedTopicsExample());
	}



	class NestedTopicsExample extends StatelessWidget {
	const NestedTopicsExample({Key? key}) : super(key: key);

osaxma / multiple_text_fields.dart

Last active January 13, 2022 15:47

An Example that shows how multiple TextFields are used together

	// ignore_for_file: avoid_function_literals_in_foreach_calls, avoid_print
	import 'package:flutter/material.dart';

	void main() => runApp(MultipleTextFieldsExampleApp());



	class MultipleTextFieldsExampleApp extends StatelessWidget {
	const MultipleTextFieldsExampleApp({Key? key}) : super(key: key);

osaxma / window_size_SO70686375.dart

Created January 12, 2022 19:59

this is for SO question: https://stackoverflow.com/q/70686375/10976714

	import 'dart:math';

	import 'package:flutter/material.dart';

	void main() {
	runApp(const WindowApp());
	}

	class WindowApp extends StatelessWidget {
	const WindowApp({Key? key}) : super(key: key);

osaxma / matrix_example_SO70665452.dart

Created January 11, 2022 11:58

for https://stackoverflow.com/q/70665452/10976714

	import 'package:flutter/material.dart';

	void main() {
	runApp(const MyApp());
	}

	class MyApp extends StatelessWidget {
	const MyApp({Key? key}) : super(key: key);

	@override

osaxma / stream_provider_example.dart

Last active January 9, 2022 14:04

an example for stream provider

	import 'package:flutter/material.dart';
	import 'package:provider/provider.dart';

	void main() {
	runApp(const MyApp());
	}

	class MyApp extends StatelessWidget {
	const MyApp({Key? key}) : super(key: key);
	@override

osaxma / quadraticCurvePoint.dart

Last active April 6, 2021 13:48

Find the coordinates of a point along a quadratic Bezier curve in dart.

	// credit: https://stackoverflow.com/a/9195706/10976714

	// The formulas to calculate the coordinates of a point at any given position (from 0 to 1) on the Bezier curve are:
	// x(t) = (1-t)^2 * x1 + 2 * (1-t) * t * x2 + t^2 * x3
	// y(t) = (1-t)^2 * y1 + 2 * (1-t) * t * y2 + t^2 * y3
	// where (x1, y1) is the starting point, (x2, y2) is the control point and (x3, y3) is the end point.

	// get a point along the Bezier curve line
	// If you pass the start, end & control points, along with 0.5 for the halfway position, you get the offset to that point
	Offset getQuadraticCurvePoint(Offset start, Offset control, Offset end, double position) {

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