diff options
Diffstat (limited to 'Source/SPObjectAdditions.m')
| -rw-r--r-- | Source/SPObjectAdditions.m | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/Source/SPObjectAdditions.m b/Source/SPObjectAdditions.m new file mode 100644 index 00000000..de762f59 --- /dev/null +++ b/Source/SPObjectAdditions.m @@ -0,0 +1,40 @@ +// +// $Id$ +// +// SPObjectAdditions.m +// sequel-pro +// +// Created by Rowan Beentje (rowan.beent.je) on February 22, 2012 +// Copyright (c) 2012 Rowan Beentje. All rights reserved. +// +// This program is free software; you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation; either version 2 of the License, or +// (at your option) any later version. +// +// This program is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. +// +// You should have received a copy of the GNU General Public License +// along with this program; if not, write to the Free Software +// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA +// +// More info at <http://code.google.com/p/sequel-pro/> + +@implementation NSObject (SPObjectAdditions) + +/** + * Detect whether an object is a NSNull instance + */ +- (BOOL)isNSNull +{ + id const null = [NSNull null]; + + // [NSNull null] is documented as being a singleton class so a pointer equality + // check is possible - and much faster than checking class membership. + return (self == null); +} + +@end |