Added index function

3 files changed, 4 insertions, 6 deletions

diff --git a/README.md b/README.md
index dd6fb76..68e4fbf 100644
--- a/README.md
+++ b/README.md
@@ -102,6 +102,7 @@ Other built-in functions are:
 * `drop(n list)`: return the list dropping the n first elements
 * `display(value)`: prints its arguments to the screen, for example `display("hello" "world")`
 * `..(i j)`: generate a list of integers from i to j
+* `\[](l n)`: get item n in l (n is zero based)
 
 See the examples in `./examples`.
 
diff --git a/examples/sentences.fco b/examples/sentences.fco
index afb2d4f..6b6e448 100644
--- a/examples/sentences.fco
+++ b/examples/sentences.fco
@@ -3,11 +3,7 @@
 def classify(xs)
     def sentence_type(s)
         def ends_with?(s c)
-            if =(tail(s) "")
-                =(s c)
-            else
-                @ends_with?(tail(s) c)
-            end
+            =([](s -(size(s) 1)) c)
         end
         if ends_with?(s "?")
             +(s " -> Q")
diff --git a/funco b/funco
index 86da6a6..808483a 100755
--- a/funco
+++ b/funco
@@ -427,7 +427,8 @@ def default_env():
             "display": print,
             "..": lambda f, t: list(range(f, t + 1, 1) if f < t else range(f, t - 1, -1)) if (
                 isinstance(f, int) and isinstance(t, int)
-                ) else None
+                ) else None,
+            "[]": lambda i, n: i[n]
         }
     )
     return env