added unique function, moved flatten to ext/iter_tools

2 files changed, 15 insertions, 1 deletions

diff --git a/ranger/ext/flatten.py b/ranger/ext/iter_tools.py
index 55d3e82f..913b9c7d 100644
--- a/ranger/ext/flatten.py
+++ b/ranger/ext/iter_tools.py
@@ -27,3 +27,17 @@ def flatten(lst):
 				yield subelem
 		else:
 			yield elem
+
+def unique(iterable):
+	"""
+	Return an iterable of the same type which contains unique items.
+
+	This function assumes that:
+	type(iterable)(list(iterable)) == iterable
+	which is true for tuples, lists and deques (but not for strings)
+	"""
+	already_seen = []
+	for item in iterable:
+		if item not in already_seen:
+			already_seen.append(item)
+	return type(iterable)(already_seen)
diff --git a/ranger/gui/curses_shortcuts.py b/ranger/gui/curses_shortcuts.py
index 1ccaddc3..2bf70da9 100644
--- a/ranger/gui/curses_shortcuts.py
+++ b/ranger/gui/curses_shortcuts.py
@@ -14,7 +14,7 @@
 
 import _curses
 
-from ranger.ext.flatten import flatten
+from ranger.ext.iter_tools import flatten
 from ranger.shared import SettingsAware
 
 class CursesShortcuts(SettingsAware):