nsstring

I've got problem with use + stringWithContentsOfFile:usedEncoding:error: My problem in usedEncoding:(NSStringEncoding *)enc I don't know how can i set pointer to encoding. If i make it - programm is fail. For example, in similar function we have encoding:(NSStringEncoding)enc - without pointer! I want loading file (file has encoding ISOLatin1) in NSString and use NSString as UTF8String. how can i make it ? thanks. NSStringEncoding encoding; NSError* error; NSString* myString = [NSString stringWithContentsOfFile:myFilePath usedEncoding:&encoding error:&error]; 来源： https://stackoverflow.com

I have a Person Object which has two NSString properties; firstName and lastName . I'm currently using an NSPredicate like so: NSPredicate *predicate = [NSPredicate predicateWithFormat:@"(firstName contains[cd] %@) OR (lastName contains[cd] %@)", searchText, searchText]; So, for example, say I'm searching for the name "John Smith" . In my search bar if I type "Joh" , then John Smith will appear as an option. This is good and fine, but if I type in "John Sm" it will go blank. How can I join firstName and lastName in the predicate so if I was searching for "John Sm" then John Smith would still

I have seen one answer for my task, but I couldnt find it now. I want to detect whether a string has empty word and contains at least "" or " " (two spaces" or more multiple spaces, OR not. If not, I would add this to Nsmutablearray. If yes with empty or at least one space, I would like it not to be written to mutablearray. How to solve this? EDIT 12 October 2011: Guys, thank you. Again I am sorry that I was unclear about my wish. I wanted to check if a string is empty or contains whitespaces without any character. I have posted my answer below. Im not sure whether it is the most performant

What would be the best method to compare an NSString to a bunch of other strings case insensitive? If it is one of the strings then the method should return YES, otherwise NO. Here's a little helper function: BOOL isContainedIn(NSArray* bunchOfStrings, NSString* stringToCheck) { for (NSString* string in bunchOfStrings) { if ([string caseInsensitiveCompare:stringToCheck] == NSOrderedSame) return YES; } return NO; } Of course this could be greatly optimized for different use cases. If, for example, you make a lot of checks against a constant bunchOfStrings you could use an NSSet to hold lower

I've some data (as NSDictionary in an NSMutableArray ), a sample data is like, Consider each row as NSDictionary and entire table is an NSMutableArray contains events. I want to result between two dates, so I'm using NSPredicate to filter my data. Here's my code snippet for this, NSPredicate *predicate = [NSPredicate predicateWithFormat:@"Date >= %@ AND Date <= %@", startDate,endDate]; NSArray *filter = [arrayEvents filteredArrayUsingPredicate:predicate]; Test filtration : Case 1: NSString *startDate = @"01/07/14"; NSString *endDate = @"31/07/2014"; Output: All events (rows). Case 2: NSString

Consider this: NSString *whatever=[NSString stringWithFormat:@"My float: %.2f",aFloat]; This will round my aFloat to 2 decimal places when building the string whatever Suppose I want the 2 in this statement to be assignable, such that, based on the value of aFloat I might have it show 2 or 4 decimal places. How can I build this into stringWithFormat ? I want to be able to do this without an if that simply repeats the entire line for different cases, but rather somehow dynamically change just the %.2f portion. You will need to build the format first: NSInteger precision = 2; NSString *format =