Both Dart and Swift have their own commands to gauge the build time of clean builds . And both can use Xcode to measure that. Usually, iOS app development using Dart is slower than Swift. However, it does get faster after the initial clean builds but may not exceed Swift.
Read moreIs Dart similar to Java or JavaScript?
Dart is very similar to Javascript and easy to learn if you already know Javascript. Dart is used extensively for the Flutter mobile UI framework..5 Oca 2021
Read moreWhat language is Dart based on?
Dart is an object-oriented, class-based, garbage-collected language with C-style syntax. Dart can compile to either native code or JavaScript.
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