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Dart 3.15 New Feature: `this` Finally Supports Type Promotion
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Dart 3.15 新特性：this 终于支持类型提升了
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Ranking history & source details
First recorded Oct 21, 2026, 1:10 AM CST · latest Oct 22, 2026, 1:15 AM CST. Ranks reflect attention on each platform.
| Day | Platform | Best rank | Last rank |
|---|---|---|---|
| 2026-10-22 | Juejin | #12 | #12 |
| 2026-10-21 | Juejin | #15 | #15 |