Home/ Questions/Q 8452035
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-06-10T11:23:57+00:00

@interface Demo2ViewController () <GMGridViewDataSource, GMGridViewSortingDelegate, GMGridViewTransformationDelegate> { __gm_weak GMGridView *_gmGridView1; __gm_weak GMGridView *_gmGridView2; __gm_weak

  • 0
@interface Demo2ViewController () <GMGridViewDataSource, GMGridViewSortingDelegate, GMGridViewTransformationDelegate>
{
    __gm_weak GMGridView *_gmGridView1;
    __gm_weak GMGridView *_gmGridView2;

    __gm_weak UIButton *_buttonOptionsGrid1;
    __gm_weak UIButton *_buttonOptionsGrid2;

    UIPopoverController *_popOverController;
    UIViewController *_optionsController1;
    UIViewController *_optionsController2;
}

Trying out the GMGridview, and saw this __gm_weak GMGridView *_gmGridView1;. Anyone know what __gm_weak means and when do you use __? Thanks in advance.

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    those declarations are not common, they are defined in the GMGridView sources:

    //
// ARC on iOS 4 and 5
//

#if __IPHONE_OS_VERSION_MIN_REQUIRED >= __IPHONE_5_0 && !defined (GM_DONT_USE_ARC_WEAK_FEATURE)
#define __gm_weak __weak
#else
#define __gm_weak __unsafe_unretained
#endif

    as far as the double underscore usage, i’d advise against it. just consider it reserved for the implementation (e.g. toolchain) and use a normal identifier.

    • 0