# var? Check if a value is an interned binding cell (`[var x]`) — the cell behind a module `def`. Use `ref?` to test for any ref cell. ## Syntax

[var? $val]

## Parameters - `$val` — Any value. ## Examples

def ready false
[var? [var ready]]  # true
[var? [ref 0]]      # false (anonymous ref)
[var? 42]           # false

## Returns Boolean. ## See Also `ref?`, `var`, `deref`, `set-and-def`