thoughtbot/Argo

Make decoding lazy

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#185 创建于 2015年7月31日

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 (1 评论) (0 反应) (0 负责人)Swift (3,455 star) (214 fork)batch import
enhancementhelp wanted

描述

Now we have parse the whole JSON value into the JSON type, but then you have a lot of overhead when you have a lot of properties that you don't use. I tried this with a type DecodableValue that has a helper method to cast the data of the DecodableValue to the type that you want. DecodableValue replaces JSON and also saves a lot of looping and switches.

贡献者指南

技术栈
swift
领域
backend
议题类型
feature
难度面向新贡献者的预计实现难度，1 表示很小改动，5 表示专家级工作。
3
预计时间有经验贡献者完成调查、实现、测试并准备 pull request 的粗略时间范围。
1-2 days
活动状态议题当前的可参与程度：新鲜、活跃、陈旧、阻塞或等待维护者输入。
stale
清晰度议题是否清楚说明期望改动、验收标准和下一步。
mostly clear
前置要求
SwiftArgo libraryfunctional programming
新手友好度1-100 的估计分数，表示该议题对首次贡献者的友好程度。
25
研究方向
The issue proposes making JSON decoding lazy to avoid overhead from parsing unused properties. Currently, Argo parses the entire JSON value into its JSON type. The suggestion is to use a DecodableValue type with a cast helper method. Investigate the current JSON type and DecodableValue implementation in the Argo source (likely in Argo/Types/). Look for any existing discussions or PRs linked to this issue. Consider implementing a lazy wrapper that defers decoding until the value is accessed. This is a significant architectural change, so careful design is needed to maintain type safety.
Make decoding lazy · thoughtbot/Argo#185 | Good First Issue