A thing

JLPOutletCollectionSort.h

//Do whatever you want with this except apply a GPL license to it.

//credit to @mattt for the below ifndef

//make sure you only give it things that respond to "Frame" and return a CGRect

@class NSArray;

#ifndef NS_ENUM
#define NS_ENUM(_type, _name) enum _name : _type _name; enum _name : _type
#endif

NS_ENUM(unsigned int, JLPEulerDimension) {
    JLPEulerDimensionX,
    JLPEulerDimensionY
};

NSArray *sortViewArrayByDimension(NSArray *viewArray, enum JLPEulerDimension dimension);

JLPOutletCollectionSort.m

#import <Foundation/Foundation.h>
#import <CoreGraphics/CoreGraphics.h>
#import "JLPOutletCollectionSort.h"

NSArray *sortViewArrayByDimension(NSArray *viewArray, enum JLPEulerDimension dimension) {
    switch (dimension) {
        case JLPEulerDimensionX: {
            return [viewArray sortedArrayUsingComparator:^NSComparisonResult(id view1, id view2) {
                if ([view1 frame].origin.x < [view2 frame].origin.x)
                    return NSOrderedAscending;
                else if ([view1 frame].origin.x > [view2 frame].origin.x)
                    return NSOrderedDescending;
                else
                    return NSOrderedSame;
            }];
        }
        case JLPEulerDimensionY: {
            return [viewArray sortedArrayUsingComparator:^NSComparisonResult(id view1, id view2) {
                if ([view1 frame].origin.y < [view2 frame].origin.y)
                    return NSOrderedAscending;
                else if ([view1 frame].origin.y > [view2 frame].origin.y)
                    return NSOrderedDescending;
                else
                    return NSOrderedSame;
            }];
        }
        default:
            return nil;
    }
}

Why does this import Core Graphics? Swizzlr of 5 months ago, you disappoint me.