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how-to-print-multiple-objects-to-the-console-with-print-in-dart

学习如何在 Dart 中使用 Record 将多个对象打印至控制台，其效果与 JavaScript 的 console.log() 功能类似。

SKILL.md
--- frontmatter
name: how-to-print-multiple-objects-to-the-console-with-print-in-dart
description: Learn how to print multiple objects to the console in Dart using Records, offering a similar experience to JavaScript's `console.log()` functionality.
metadata:
  url: https://rodydavis.com/posts/dart/print-multiple-objects
  last_modified: Tue, 03 Feb 2026 20:04:33 GMT

How to Print Multiple Objects to the Console with print() in Dart

If you are coming from JavaScript you may be used to printing multiple objects to the console with console.log():

code
console.log('a', 1, 'b', 2); // a 1 b 2

In Dart we can only print Object? to the console with print():

code
print(1); // 1
print(null); // null
print({'a': 1, 'b': 2}); // {a: 1, b: 1}

But it is totally possible to print multiple objects too, we need to use Records:

code
final number = 1;
final str = 'Hello World';

print((number, str));

print((DateTime.now(), str));

print((DateTime.now(), count: number, description: str));

print((DateTime.now(), StackTrace.current));

Print the following:

code
(1, Hello World)
(2024-03-06 15:48:26.514, Hello World)
(2024-03-06 15:48:26.514, count: 1, description: Hello World)
(2024-03-06 15:48:26.514, Error
    at get current [as current] (https://storage.googleapis.com/nnbd_artifacts/3.3.0/dart_sdk.js:139991:30)
    at Object.main$0 [as main] (<anonymous>:52:94)
    at Object.main$ [as main] (<anonymous>:44:10)
    at <anonymous>:89:26
    at Object.execCb (https://dartpad.dev/require.js:5:16727)
    at e.check (https://dartpad.dev/require.js:5:10499)
    at e.<anonymous> (https://dartpad.dev/require.js:5:12915)
    at https://dartpad.dev/require.js:5:1542
    at https://dartpad.dev/require.js:5:13376
    at each (https://dartpad.dev/require.js:5:1020)
    at e.emit (https://dartpad.dev/require.js:5:13344)
    at e.check (https://dartpad.dev/require.js:5:11058)
    at e.enable (https://dartpad.dev/require.js:5:13242)
    at e.init (https://dartpad.dev/require.js:5:9605)
    at a (https://dartpad.dev/require.js:5:8305)
    at Object.completeLoad (https://dartpad.dev/require.js:5:15962)
    at HTMLScriptElement.onScriptLoad (https://dartpad.dev/require.js:5:16882))

Demo