你即將離開本站

並前往https://chromium.googlesource.com/external/dart/bleeding_edge/+/master/dart/sdk/lib/core/string.dart

dart/sdk/lib/core/string.dart - external/dart/bleeding_edge

var newString = string.substring(0, 5); ... [Dart Cookbook](https://www.dartlang.org/docs/cookbook/#strings) ... string.indexOf(new RegExp(r'dart')); // -1.

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