Add Function.memo

[jdharrisnz]

Type

• Refactor
• Feature
• Bug Fix
• Optimization
• Documentation Update

Description

Add pure memoization wrapper function to the Function module.

Questions:

• Do you think there is value in the memoThis alias? It's rare that this is used in type signatures, and the implementation uses it so it's valid, but it might just be unnecessary noise.
• Should the helpers be in some internal file or are they ok where they are with the @internal tag?
• Should this also be used internally, to replace Hash.cached for example? And if so, what are all the candidates for replacing manual caching? Would those changes belong in this PR or another?

[changeset-bot]

🦋 Changeset detected

Latest commit: ed0d278

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 36 packages

Name	Type
effect	Minor
@effect/cli	Major
@effect/cluster	Major
@effect/experimental	Major
@effect/opentelemetry	Major
@effect/platform-browser	Major
@effect/platform-bun	Major
@effect/platform-node-shared	Major
@effect/platform-node	Major
@effect/platform	Major
@effect/printer-ansi	Major
@effect/printer	Major
@effect/rpc	Major
@effect/sql-clickhouse	Major
@effect/sql-d1	Major
@effect/sql-drizzle	Major
@effect/sql-kysely	Major
@effect/sql-libsql	Major
@effect/sql-mssql	Major
@effect/sql-mysql2	Major
@effect/sql-pg	Major
@effect/sql-sqlite-bun	Major
@effect/sql-sqlite-do	Major
@effect/sql-sqlite-node	Major
@effect/sql-sqlite-react-native	Major
@effect/sql-sqlite-wasm	Major
@effect/sql	Major
@effect/typeclass	Major
@effect/vitest	Major
@effect/workflow	Major
@effect/ai	Major
@effect/ai-amazon-bedrock	Major
@effect/ai-anthropic	Major
@effect/ai-google	Major
@effect/ai-openai	Major
@effect/ai-openrouter	Major

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