Predicate 谓词查询

文章目录

1. 1. 前言
2. 2. 参考资料
3. 3. 文档信息

前言

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集合类

predicate = [NSPredicate predicateWithFormat:@"%K CONTAINS %@",@"CollectUsers", userId];

模型属性过滤

[dataModels filteredArrayUsingPredicate:[NSPredicate predicateWithFormat:@"type != '0' && type != '1'"]]

或者

[dataModels filteredArrayUsingPredicate:[NSPredicate predicateWithBlock:^BOOL(id  _Nullable evaluatedObject, NSDictionary<NSString *,id> * _Nullable bindings) {
	HTModel * model = (HTModel *)evaluatedObject;
	NSPredicate * printPredicate = [NSPredicate predicateWithFormat:@"type == '2' || type == '3'"];
	return  [printPredicate evaluateWithObject:model];
}]];

参考资料

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• 文档信息

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