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32 lines
574 B
Markdown
32 lines
574 B
Markdown
# Generators
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## `Effect.gen`: Passing `this`
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In v3, you could pass a `self` value directly as the first argument to
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`Effect.gen`. In v4, `self` must be wrapped in an options object.
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**v3**
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```ts
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import { Effect } from "effect"
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class MyService {
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readonly local = 1
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compute = Effect.gen(this, function*() {
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return yield* Effect.succeed(this.local + 1)
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})
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}
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```
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**v4**
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```ts
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import { Effect } from "effect"
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class MyService {
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readonly local = 1
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compute = Effect.gen({ self: this }, function*() {
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return yield* Effect.succeed(this.local + 1)
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})
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}
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```
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