(FM-3701) Update README for is_a

xbezdick · Sep 28, 2015 · bfa21ed · bfa21ed
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commit bfa21ed
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/README.markdown b/README.markdown
@@ -405,7 +405,7 @@ Returns an array an intersection of two. For example, `intersection(["a","b","c"
 
 #### `is_a`
 
-Boolean check to determine whether a variable is of a given data type. This is equivalent to the `=~` type checks.
+Boolean check to determine whether a variable is of a given data type. This is equivalent to the `=~` type checks. This function is only available in Puppet 4, or when using the "future" parser. 
 
   ~~~
   foo = 3