[英]Better way to convert NSArray of NSString to NSArray of NSNumber
Is there is a better way to convert NSArray
of NSString
into NSArray
of NSNumber
than the following code: 是否有更好的方法来转换
NSArray
的NSString
到NSArray
的NSNumber
比下面的代码:
-(NSArray*) convertStringArrayToNumberArray:(NSArray *)strings {
NSMutableArray *numbers = [[NSMutableArray alloc] initWithCapacity:strings.count];
for (NSString *string in strings) {
[numbers addObject:[NSNumber numberWithInteger:[string integerValue]]];
}
return numbers;
}
-(NSArray *)convertStringArrayToNumberArray:(NSArray *)strings {
return [strings valueForKeyPath:@"self.integerValue"];
}
I test 我测试一下
NSArray * array = @[@"1",@"2",@"3"];
NSArray *num = [self convertStringArrayToNumberArray:array];
And result 结果
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