try to fix string issue

jeremiahpslewis · jeremiahpslewis · commit 8934e3f5c887 · 2024-03-27T20:00:37.000+01:00
diff --git a/src/CircularArrayBuffers.jl b/src/CircularArrayBuffers.jl
@@ -98,7 +98,7 @@ function wrap_index(idx::Int, n::Int)
     elseif idx <= 2n
         return idx - n
     else
-        @warn "oops! idx $(idx) > 2n $(2n)"
+        @warn "oops! idx " * idx * " > 2n " * 2n
         return idx - n
     end
 end
