From ce5909ceca8e0df00407ad39bd0e2763890b185d Mon Sep 17 00:00:00 2001
From: Jishnu Bhattacharya <jishnub@users.noreply.github.com>
Date: Wed, 27 Apr 2022 22:51:38 +0400
Subject: [PATCH] doc: use `isa` instead of :: in the docstring for Union
 (#45104)

---
 base/docs/basedocs.jl | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/base/docs/basedocs.jl b/base/docs/basedocs.jl
index c102a3b2ce426..8cb5c021fabc9 100644
--- a/base/docs/basedocs.jl
+++ b/base/docs/basedocs.jl
@@ -2523,14 +2523,14 @@ union [`Union{}`](@ref) is the bottom type of Julia.
 julia> IntOrString = Union{Int,AbstractString}
 Union{Int64, AbstractString}
 
-julia> 1 :: IntOrString
-1
+julia> 1 isa IntOrString
+true
 
-julia> "Hello!" :: IntOrString
-"Hello!"
+julia> "Hello!" isa IntOrString
+true
 
-julia> 1.0 :: IntOrString
-ERROR: TypeError: in typeassert, expected Union{Int64, AbstractString}, got a value of type Float64
+julia> 1.0 isa IntOrString
+false
 ```
 """
 Union