Raw strings in formulas, to avoid $$

lib/ai/formula_screen.dart

@@ -182,7 +182,7 @@ class _FormulaScreenState extends State<FormulaScreen> {
             Text(widget.formula.output.name),
             const Spacer(),
             SizedBox(
-              width: 100,
+              width: 150,
               child: TextFormField(
                 readOnly: true,
                 enabled: false,

lib/corpus.dart

@@ -34,7 +34,7 @@ class Corpus{
 
       if( checkUnits ){
         for( final inputVar in formula.input + [formula.output] ){
-          if( getUnit(inputVar.unit) == null ){
+          if( !_allUnits.containsKey(inputVar.unit) ){
             throw ArgumentError( "Unit not found: ${inputVar.unit}");
           }
         }

lib/defaults/formulas.d4rt

@@ -2,7 +2,7 @@
   // Free fall distance (vertical)
   {
     "name": "Free Fall Distance",
-    "description": '''
+    "description": r"""
 Calculates vertical displacement under constant gravity
 
 $$h = \\frac{1}{2}gt^2$$
@@ -11,7 +11,7 @@ Where:
 - $g$: Gravitational acceleration ($9.81\\ \\mathrm{m/s^2}$ on Earth)
 - $t$: Time in free fall (seconds)
 
-![Free Fall Diagram](https://altcalculator.com/wp-content/uploads/2023/08/Free-Fall.png)''',
+![Free Fall Diagram](https://altcalculator.com/wp-content/uploads/2023/08/Free-Fall.png)""",
     "input": [
       {"name": "t", "unit": "second"},  // Time in seconds
       {"name": "g", "unit": "meters per second"}  // Gravitational acceleration
@@ -24,7 +24,7 @@ Where:
   // Newton's Law of Universal Gravitation
   {
     "name": "Gravitational Force",
-    "description": '''
+    "description": r'''
 Newton's law of universal gravitation
 
 $$F = G\\frac{m_1m_2}{r^2}$$
@@ -48,7 +48,7 @@ Where:
   // Kinetic Energy
   {
     "name": "Kinetic Energy",
-    "description": '''
+    "description": r'''
 Energy possessed by a moving object
 
 $$KE = \\frac{1}{2}mv^2$$
@@ -70,13 +70,13 @@ Where:
   // Projectile Motion Range
   {
     "name": "Projectile Range",
-    "description": "Calculates horizontal distance of projectile motion\n\n"
+    "description": r"""Calculates horizontal distance of projectile motion
-                 "$$R = \\frac{v^2 \\sin(2\\theta)}{g}$$\n\n"
+                 $$R = \\frac{v^2 \\sin(2\\theta)}{g}$$
-                 "Where:\n"
+                 Where:
-                 "- $v$: Initial velocity\n"
+                 - $v$: Initial velocity
-                 "- $\\theta$: Launch angle\n"
+                 - $\\theta$: Launch angle
-                 "- $g$: Gravitational acceleration\n\n"
+                 - $g$: Gravitational acceleration
-                 "![Projectile Motion](https://upload.wikimedia.org/wikipedia/commons/thumb/5/52/Projectile_motion_diagram.png/800px-Projectile_motion_diagram.png)",
+                 ![Projectile Motion](https://upload.wikimedia.org/wikipedia/commons/thumb/5/52/Projectile_motion_diagram.png/800px-Projectile_motion_diagram.png)""",
     "input": [
       {"name": "v", "unit": "meters per second"},  // Initial velocity
       {"name": "a", "unit": "degree"}   // Launch angle
@@ -91,7 +91,7 @@ Where:
 
   {
     "name": "Newton's Second Law",
-    "description": '''
+    "description": r'''
 Force equals mass times acceleration
 
 $$F = m \\cdot a$$

lib/formula_models.dart

@@ -186,6 +186,7 @@ class Formula {
     buffer.write("main(){ return $arrayStringLiteral; }");
     final code = buffer.toString();
 
+    //print("fromArrayStringLiteral:$code");
     final List<Object?> list = d4rt.execute(source: code);
 
     final formulas = list.map((set) => Formula.fromSet(set as Map));
@@ -214,6 +215,7 @@ class Formula {
     return Formula(
       name: name,
       description: description,
+      tags: tags,
       input: input,
       output: output,
       d4rtCode: d4rtCode,

lib/main.dart

@@ -1,10 +1,6 @@
-import 'package:d4rt_formulas/formula_models.dart';
 import 'package:flutter/material.dart';
 
-import 'package:resource_portable/resource.dart' show Resource;
-import 'dart:convert';
 
-import 'ai/formula_screen.dart';
 import 'ai/formula_list.dart';
 import 'corpus.dart';
 import 'defaults/default_corpus.dart';

pubspec.lock

@@ -299,14 +299,6 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "2.0.0"
-  nested:
-    dependency: transitive
-    description:
-      name: nested
-      sha256: "03bac4c528c64c95c722ec99280375a6f2fc708eec17c7b3f07253b626cd2a20"
-      url: "https://pub.dev"
-    source: hosted
-    version: "1.0.0"
   node_preamble:
     dependency: transitive
     description:
@@ -331,30 +323,6 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.9.1"
-  path_drawing:
-    dependency: transitive
-    description:
-      name: path_drawing
-      sha256: "3bdd251dae9ffaef944450b73f168610db7e968e7b20daf0c3907f8b4aafc8a2"
-      url: "https://pub.dev"
-    source: hosted
-    version: "0.5.1+1"
-  path_parsing:
-    dependency: transitive
-    description:
-      name: path_parsing
-      sha256: ee5c47c1058ad66b4a41746ec3996af9593d0858872807bcd64ac118f0700337
-      url: "https://pub.dev"
-    source: hosted
-    version: "0.2.1"
-  petitparser:
-    dependency: transitive
-    description:
-      name: petitparser
-      sha256: cb3798bef7fc021ac45b308f4b51208a152792445cce0448c9a4ba5879dd8750
-      url: "https://pub.dev"
-    source: hosted
-    version: "5.4.0"
   pool:
     dependency: transitive
     description:
@@ -363,14 +331,6 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.5.1"
-  provider:
-    dependency: transitive
-    description:
-      name: provider
-      sha256: "59471e0a4595e264625d3496af567ac85bdae1148ec985aff1e0555786f53ecf"
-      url: "https://pub.dev"
-    source: hosted
-    version: "5.0.0"
   pub_semver:
     dependency: transitive
     description:
@@ -504,14 +464,6 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "0.6.12"
-  tuple:
-    dependency: transitive
-    description:
-      name: tuple
-      sha256: a97ce2013f240b2f3807bcbaf218765b6f301c3eff91092bcfa23a039e7dd151
-      url: "https://pub.dev"
-    source: hosted
-    version: "2.0.2"
   typed_data:
     dependency: transitive
     description:
@@ -576,14 +528,6 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.2.1"
-  xml:
-    dependency: transitive
-    description:
-      name: xml
-      sha256: "80d494c09849dc3f899d227a78c30c5b949b985ededf884cb3f3bcd39f4b447a"
-      url: "https://pub.dev"
-    source: hosted
-    version: "5.4.1"
   yaml:
     dependency: transitive
     description:

test/formula_models_test.dart

@@ -3,9 +3,7 @@ import 'package:d4rt_formulas/defaults/default_corpus.dart';
 import 'package:d4rt_formulas/formula_evaluator.dart';
 import 'package:test/test.dart';
 import 'package:d4rt_formulas/formula_models.dart';
-import 'dart:convert' show utf8;
 
-import 'package:resource_portable/resource.dart' show Resource;
 
 void main() {