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subarctictoday at 4:05 PM1 replyview on HN

The annoying thing about solid coming from react is that every prop for every component needs to be a function that returns a value instead of just a value, otherwise that prop can never be updated.


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iainmerricktoday at 4:37 PM

That's not quite right! I made the same mistake in a Solid project.

The deal is that your `props` parameter is reactive. If you use `props.x`, and the value of `x` later changes, that bit of your component will update.

The catch is that you have to access it via `props` -- if you extract it, e.g. "const { x } = props", subsequent uses of `x` aren't reactive. Sometimes that's actually what you want, sometimes not.

Like you, I ended up turning lots of props into accessor functions -- `props.x()` -- so it's clear exactly when they're being used. This isn't necessary if you're careful to access via `props` and not extract fields prematurely. But sometimes I like being explicit about it, so I still sometimes use function props.

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