sema-docs 1.23.0

Canonical structured documentation for Sema builtins/special forms; powers LSP hover/completion and REPL apropos
Documentation 
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---
name: "context/has?"
module: "context"
section: "Core Functions"
---

Check if a key exists in the context.

```sema
(context/has? :trace-id)  ; => #t
(context/has? :missing)   ; => #f
```