runtime/lib/string_patch.dart - Issue 442693002: Special case substring(0, length) to return itself.

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Unified Diff: runtime/lib/string_patch.dart

Issue 442693002: Special case substring(0, length) to return itself. (Closed) Base URL: https://dart.googlecode.com/svn/branches/bleeding_edge/dart

Patch Set: Adding parentheses. Created 6 years, 4 months ago

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Index: runtime/lib/string_patch.dart

diff --git a/runtime/lib/string_patch.dart b/runtime/lib/string_patch.dart

index ec793067394b7ce24877fd859874b7e07b6a02df..11f549338be8cc80828f2aa37059c0845315c51a 100644

--- a/runtime/lib/string_patch.dart

+++ b/runtime/lib/string_patch.dart

@@ -247,6 +247,9 @@ class _StringBase {

if (startIndex == endIndex) {

return "";

}

+ if ((startIndex == 0) && (endIndex == this.length)) {

+ return this;

+ }

if ((startIndex + 1) == endIndex) {

return this[startIndex];

}

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