我正在尝试将对象添加到NSMutableArray(categoriasArray),但它不是由迭代器完成的:
@synthesize categoriasArray;
for (int i = 0; i < [categories count]; i++) {
categoria *cat = [[categoria alloc] initWithDictionary:[categories objectAtIndex:i]];
[self.categoriasArray addObject:cat];
cat=nil;
}
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在for迭代器之后,categoriasArray有0个对象.
非常感谢
我有两个包含同一对象的数组的 Single 值。我想合并它们并应用地图并将它们作为单个返回。是否可以?
所以我有这个:
func fetchTripList(type: TripType) -> Single<[Trip]> {
let response: Single<APITripListResponse> = request(target: TripsAPI.fetchUpcomingTripList)
return response.map { $0.toModel() }
}
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我需要这样的东西:
func fetchTripList(type: TripType) -> Single<[Trip]> {
let responseUpcoming: Single<APITripListResponse> = request(target: TripsAPI.fetchUpcomingTripList)
let responsePast: Single<APITripListResponse> = request(target: TripsAPI.fetchPastTripList)
//'Declare a Singe variable <[Trip]> called X merge both responseUpcoming and responsePast, apply to them map { $0.toModel() } and return it'
return X
}
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非常感谢您的帮助。
我有这个JSON响应字符串:
{"d":"{\"ID_usuario\":\"000130\",\"Nombre\":null,\"Vipxlo\":0,\"Provmun\":null,\"Descuentos\":null,\"Listaviplocal\":null}"}`
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使用此代码:
- (void)connectionDidFinishLoading:(NSURLConnection *)connection
{
//Check valid signal
connection = nil;
NSString *responseString = [[NSString alloc] initWithData:responseData encoding:NSUTF8StringEncoding];
//data =nil;
NSArray *jsonArray = [responseString JSONValue];
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我该怎么做?
我正在将一段代码从VB转换为Objective C.它包含函数ChrW(),它从一个以整数形式传递的unicode值中提供char.如何在Objective C中实现它?
非常感谢