Make closure example's captured variable explicit (elixir-lang#794)

feynmanliang · josevalim · commit ea8f8e542112 · 2016-07-07T10:21:50.000+02:00
The current example does not actually illustrate closure capture of variables in scope at function declaration.
diff --git a/getting-started/basic-types.markdown b/getting-started/basic-types.markdown
@@ -216,7 +216,9 @@ Note a dot (`.`) between the variable and parenthesis is required to invoke an a
 Anonymous functions are closures, and as such they can access variables that are in scope when the function is defined:
 
 ```iex
-iex> add_two = fn a -> add.(a, 2) end
+iex> b = 2
+2
+iex> add_two = fn a -> add.(a, b) end
 #Function<6.71889879/1 in :erl_eval.expr/5>
 iex> add_two.(2)
 4

Original file line number	Diff line number	Diff line change
@@ -216,7 +216,9 @@ Note a dot (`.`) between the variable and parenthesis is required to invoke an a
`216`	`216`	`Anonymous functions are closures, and as such they can access variables that are in scope when the function is defined:`
`217`	`217`
`218`	`218`	```iex
`219`		`-iex> add_two = fn a -> add.(a, 2) end`
	`219`	`+iex> b = 2`
	`220`	`+2`
	`221`	`+iex> add_two = fn a -> add.(a, b) end`
`220`	`222`	`#Function<6.71889879/1 in :erl_eval.expr/5>`
`221`	`223`	`iex> add_two.(2)`
`222`	`224`	`4`