Introduce asOpenInterval in Interval

pharo-project · Feb 2, 2021 · 3a78119 · 3a78119
1 parent 4d2cbd0
commit 3a78119
Showing 1 changed file with 12 additions and 0 deletions.
diff --git a/src/Collections-Sequenceable/Interval.class.st b/src/Collections-Sequenceable/Interval.class.st
@@ -170,6 +170,18 @@ Interval >> anyOne [
 	^self at: 1
 ]
 
+{ #category : #converting }
+Interval >> asOpenInterval [
+	"Return a new interval representing the open version of the receiver.
+	In other words, the new inteval does not contain the upper and lower boundaries of the receiver
+	"
+
+	"(1 to: 10) asOpenInterval >>> (2 to: 9)"
+	"(10 to: 1 by: -1) asOpenInterval >>> (9 to: 2)"
+
+	^ start + step to: stop - step
+]
+
 { #category : #accessing }
 Interval >> at: anInteger [
 	"Answer the anInteger'th element."