dart

Reverse Iterator for List?

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You can now reverse the iteration of a list in Dart. Use the reversed getter on List. var fruits = [‘apples’, ‘oranges’, ‘pears’]; Iterable inReverse = fruits.reversed; var fruitsInReverse = inReverse.toList(); print(fruitsInReverse); // [pears, oranges, apples] You could shorten this to: var fruits = [‘apples’, ‘oranges’, ‘pears’]; print(fruits.reversed.toList()); See the API docs.

How to save and download text file in Flutter web application

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This method is based on manipulations with an HTML document. Some additional packages should be imported: import ‘dart:convert’; import ‘dart:html’ as html; // or package:universal_html/prefer_universal/html.dart Code snippet: final text=”this is the text file”; // prepare final bytes = utf8.encode(text); final blob = html.Blob([bytes]); final url = html.Url.createObjectUrlFromBlob(blob); final anchor = html.document.createElement(‘a’) as html.AnchorElement ..href = … Read more

Error: ‘ModalBottomSheetRoute’ is imported from both

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The reason behind the error is says both material/bottom_sheet.dart and bottom_sheet_route exports the ModalBottomSheetRoute. ‘ModalBottomSheetRoute’ is imported from both ‘package:flutter/src/material/bottom_sheet.dart’ and ‘package:modal_bottom_sheet/src/bottom_sheet_route.dart’. In order to fix this issue we have to hide one of the ModalBottomSheetRoute. since we need this to be imported from bottom_sheet_route we need to hide it from material This is the … Read more

flutter –flow-control-collections are needed, but are they?

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Hey, I had the same issue this morning but found a fix. 1) Keep the analysis_options.yaml in your root folder with this code: analyzer: enable-experiment: – control-flow-collections 2) Don’t use brackets {} in between your for loops Ex: <Widget>[ for (final category in categories) CategoryWidget(category: category) ], 3) Important step which is probably why it’s … Read more