UICollectionViewSplitLayout
                                UICollectionViewSplitLayout makes collection view more responsive.
                            
                        How to download and setup UICollectionViewSplitLayout
Open terminal and run command
                                            git clone https://github.com/yahoojapan/UICollectionViewSplitLayout.git
                                        
                                        git clone is used to create a copy or clone of UICollectionViewSplitLayout repositories.
                                        You pass git clone a repository URL. it supports a few different network protocols and corresponding URL formats.
Also you may download zip file with UICollectionViewSplitLayout https://github.com/yahoojapan/UICollectionViewSplitLayout/archive/master.zip
Or simply clone UICollectionViewSplitLayout with SSH
                                            [email protected]:yahoojapan/UICollectionViewSplitLayout.git                                    
                                    If you have some problems with UICollectionViewSplitLayout
You may open issue on UICollectionViewSplitLayout support forum (system) here: https://github.com/yahoojapan/UICollectionViewSplitLayout/issuesSimilar to UICollectionViewSplitLayout repositories
Here you may see UICollectionViewSplitLayout alternatives and analogs
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