ios - 使用NSSet不敏感地从NSArray案例中删除重复项

Question

NSArray*arr = @[@"ram",@"Ram",@"vinoth",@"kiran",@"kiran"];
NSSet* uniqueName = [[NSSet alloc]initWithArray:arr];
NSLog(@"Unique Names :%@",uniqueName);

输出:

但我需要输出为

Answer 1

您可以先将它们全部转换为小写字符串。

NSArray *arr = @[@"ram",@"Ram",@"vinoth",@"kiran",@"kiran"];
NSArray *lowerCaseArr = [arr valueForKey:@"lowercaseString"];
NSSet* uniqueName = [[NSSet alloc] initWithArray:lowerCaseArr];
NSLog(@"Unique Names :%@",uniqueName);

唯一名称:{(
内存，
基兰
酒
)}