iOS Implicit conversion loses integer precision: 'NSUInteger' (aka 'unsigned long') to 'int'

出现Implicit conversion loses integer precision: 'NSUInteger' (aka 'unsigned long') to 'int意思是NSUinteger隐式转换int会丢失精度,会报这个⚠️但是程序可以正常运行,要消掉这个警告需要手动转换比如:

(int)array.count