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Unified Diff: runtime/lib/arrays.dart

Issue 8276005: Implement List.getRange. (Closed) Base URL: http://dart.googlecode.com/svn/branches/bleeding_edge/dart/
Patch Set: '' Created 9 years, 2 months ago
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Index: runtime/lib/arrays.dart
===================================================================
--- runtime/lib/arrays.dart (revision 402)
+++ runtime/lib/arrays.dart (working copy)
@@ -86,5 +86,17 @@
}
return -1;
}
+
+ static void rangeCheck(Array a, int start, int length) {
+ if (length < 0) {
+ throw new IllegalArgumentException("negative length $length");
+ }
+ if (start < 0 || start > a.length) {
+ throw new IndexOutOfRangeException(start);
+ }
+ if (start + length > a.length) {
+ throw new IndexOutOfRangeException(start + length);
+ }
+ }
}
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