LINE news

LINE has unified its Rooms and Groups into a single **Group Chat**.

LINE·1·2026.03.18 14:00

Good code should be easier to read than to write, and should be designed so that it's hard to use incorrectly.

LINE·2·2026.03.13 11:00

Mobile engineers from Tokyo and HCMC strengthened collaboration through joint reviews and design exercises at FIXIT.

LINE·2·2026.03.11 11:00

Injecting excessive logic for the sake of testing can make tests complex and risks missing verification of actual interactions.

LINE·2·2026.03.06 11:00

Error representations should be unified into one rather than scattered across many, so that the call site stays simple.

LINE·2026.02.20 11:00

Validation should be completed at the time of object creation or update, not at the time of use.

LINE·2·2026.02.13 11:00

LY Corp is building **Flava**, a new private cloud platform that integrates the clouds of Yahoo! JAPAN and LINE.

LINE·1·2026.02.06 11:00

Considering the characteristics of Collections and appropriately using Set and Map instead of List can improve code clarity and stability.

LINE·2026.02.06 11:00

LY Corporation is building an observability platform that improves metrics storage efficiency and integrates AI to manage large-scale infrastructure.

LINE·1·2026.02.04 15:00

Kotlin primary constructors should be kept simple to match the class's properties, with complex logic separated into secondary constructors or factory functions.

LINE·2026.01.30 12:00

Including collection index information in a data model causes data inconsistency during filtering, so such data should only be generated when needed, such as at the UI layer.

LINE·2026.01.23 12:00

This proposes ensuring idempotency in functions to reduce the hassle of state checks and increase code predictability.

LINE·2026.01.16 11:00

AI services need a separate, dedicated guardrail system to compensate for the limitations of the system prompt approach.

LINE·2026.01.14 11:00

This analyzes the concurrency issues that occur when function state is managed as an object's property, and presents two design approaches to resolve them.

LINE·2026.01.09 11:00

To overcome the limitations of the existing MCP approach, we built an A2A-based NL-to-SQL analysis pipeline in which specialized agents collaborate with one another.

LINE·2·2026.01.05 11:00

Be wary of over-applying the SLAP principle, as it can harm the readability of the main logic.

LINE·1·2026.01.02 02:00

Rather than excessively separating a class's responsibilities, it's important to keep the interface simple from the caller's perspective.

LINE·1·2025.12.26 11:00

Implicit dependency relationships within code should be isolated at the function or class level to prevent runtime errors.

LINE·2025.12.19 11:00

During code review, you should examine the caller and callee code together to prevent duplication or omission of conditional filters.

LINE·2·2025.12.12 11:00

When writing JSON unit tests, you should verify structure abstractly rather than comparing strings directly, in order to increase the flexibility and accuracy of the tests.

LINE·1·2025.12.05 11:00