change isimmutable to be defined in terms of ismutable

JuliaLang · Feb 5, 2020 · eed8b67 · eed8b67
1 parent a252f5e
commit eed8b67
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/base/deprecated.jl b/base/deprecated.jl
@@ -209,6 +209,6 @@ julia> isimmutable([1,2])
 false
 ```
 """
-isimmutable(@nospecialize(x)) = (@_pure_meta; !typeof(x).mutable)
+isimmutable(@nospecialize(x)) = !ismutable(x)
 
 # END 1.5 deprecations