Roll to Dart 2.10 (#72)

null_safety/calculate_lix/CHANGELOG.md

@@ -1,3 +1,8 @@
+## 1.1.0
+
+- Roll to use Dart 2.10 dev-channel SDK
+- Change `collection` dependency from git to pub.dev pre-release version
+
 ## 1.0.0
 
 - Initial version

null_safety/calculate_lix/README.md

@@ -8,17 +8,18 @@ safety at its current tech preview stage.
 
 ## Running the example code
 
-The code works only with the first tech preview of null safety, Dart SDK version
-`2.9.0-14.0.dev`. You will need to download a copy of this Dart SDK even if you
-have a Flutter or Dart SDK installed already, and you'll want to use this
-preview SDK only for experimenting with null safety. Specifically, do not use it
-for any kind of production coding.
+The code works only with tech preview builds of null safety from the Dart dev
+channel. You will need to download a copy of this Dart SDK even if you have a
+Flutter or Dart SDK installed already, and you'll want to use this preview SDK
+only for experimenting with null safety. Specifically, do not use it for any
+kind of production coding.
 
 ### Dart preview SDK installation
 
-  1. Download the tech preview 1 build is version **`2.9.0-14.0.dev`** from the
-     dev-channel in the SDK archive:
-     https://dart.dev/tools/sdk/archive#dev-channel
+  1. Download the latest null safety preview build from the dev-channel in the
+     SDK archive: https://dart.dev/tools/sdk/archive#dev-channel. The
+     instructions below use `2.10.0-56.0.dev`; you get download a more recent
+     build.
 
   1. Unzip the SDK to a folder, e.g. `/Users/michael/dev/preview/dart-sdk` or
      `C:\Users\michael\dev\preview\dart-sdk\`
@@ -34,11 +35,11 @@ To run the main app, type these commands in the terminal/command-prompt:
   - Windows:
     - `cd <folder with samples repo>\null_safety\calculate_lix\`
     - `C:\Users\michael\dev\preview\dart-sdk\bin\dart pub get`
-    - `C:\Users\michael\dev\preview\dart-sdk\bin\dart --enable-experiment=non-nullable bin\main.dart text\lorem-ipsum.txt`
+    - `C:\Users\michael\dev\preview\dart-sdk\bin\dart --enable-experiment=non-nullable run bin\main.dart text\lorem-ipsum.txt`
   - macOS/Linux:
     - `cd <folder with samples repo>/null_safety/calculate_lix/`
     - `/Users/michael/dev/preview/dart-sdk/bin/dart pub get`
-    - `/Users/michael/dev/preview/dart-sdk/bin/dart --enable-experiment=non-nullable bin/main.dart text/lorem-ipsum.txt`
+    - `/Users/michael/dev/preview/dart-sdk/bin/dart --enable-experiment=non-nullable run bin/main.dart text/lorem-ipsum.txt`
 
 ### Running from VSCode
 
@@ -55,7 +56,7 @@ VSCode:
 
   1. Tell VSCode to use the preview Dart SDK: Open `bin/main.dart` and then
      locate the 'Dart: <version number>' selector in the status bar at the
-     bottom, and select `Dart: 2.9.0-14.0.dev`.
+     bottom, and select `Dart: 2.10.0-56.0.dev`.
 
   1. Select **Run > Run** and the project should run and print a message in the Debug
      Console.

null_safety/calculate_lix/pubspec.lock

@@ -4,11 +4,9 @@ packages:
   collection:
     dependency: "direct main"
     description:
-      path: "."
-      ref: null_safety
-      resolved-ref: "6ef56d3e8cfa4d347cbf70321251c5bb87acc9a1"
-      url: "https://github.com/dart-lang/collection"
-    source: git
-    version: "1.14.13-dev"
+      name: collection
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.15.0-nullsafety.2"
 sdks:
-  dart: ">=2.9.0-13.0.dev <3.0.0"
+  dart: ">=2.10.0-56.0.dev <2.10.0"

null_safety/calculate_lix/pubspec.yaml

@@ -1,17 +1,9 @@
 name: calculate_lix
 description: A command-line application demonstrating use of null safety.
-version: 1.0.0
+version: 1.1.0
 
 environment:
-  sdk: '>=2.9.0-13.0.dev <3.0.0'
+  sdk: '>=2.10.0-56.0.dev <2.11.0'
 
 dependencies:
-  collection: 1.14.13-dev
-
-# Temporary override as the null safety enabled versions of this package is
-# not yet published to pub.dev.
-dependency_overrides:
-  collection:
-    git:
-      url: https://github.com/dart-lang/collection
-      ref: null_safety
+  collection: 1.15.0-nullsafety.2