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NSArray of NSArrays: Get value of index of contained array

You have to construct it yourself. There's no one-liner to do it:

NSMutableArray* secondItems =
[[NSMutableArray alloc]
for (NSArray* element in arrObjects)
    [secondItems addObject:element[1]];

Categories : IOS

Related to : NSArray of NSArrays: Get value of index of contained array
BsonDocument contains an array. Need to access the array elements in C# when the BsonDocument is contained by a C# list
I would recommend mapping the Mongo document to some form of DTO. Mongo supports deserializing into object graphs. public class User { [BsonId] public ObjectId Id { get; set; } public string username { get; set; } public string status { get; set; } public List<Profile> profile { get; set; } } public class Profile { public string name { get; set; } publi

Categories : C#
Array out of bounds, index -1
EDIT (as the OP indicated he actually wants C): C answer What you can do is either create a char array: char [N][name_length] where N - number "user wants" (I assume the user will somehow input it into your program), name_length - maximum length the name can have (a C-string, i.e. null-terminated string). or create an array of your own structs (each holding a separate name and maybe some oth

Categories : C
Using char as array index after using map
There's no automatic conversion from char to std::string. You have two options: make the conversion explicit, count=alpha[std::string(1,temp)]; change the type of temp to std::string. You can assign a char to a string, with the intuitive result, so the rest of your code will work If all the map keys are single-character strings, then you might consider using char as the key; or even using a fl

Categories : C++
Preg_replace index in array in replacement with pattern $arr[{...}]
You cannot use preg_replace directly. Try this function doReplace($matches) { $month = ['January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December']; return $matches[3] . ' ' . $month[$matches[2] - 1] . ' ' . $matches[1]; } $str = "The fly went away in 1990-11-20"; $pattern = array('/(d{4})-(d{1,2})-(d{1,2})/'); $res = preg_re

Categories : PHP
How to check to see if an array index has already been called in java
Try this code. I had to do similar task then i had used it. java.util.Random r = new java.util.Random(); java.util.Scanner s = new java.util.Scanner(; int arraylength = s.nextInt(); int students[] = new int[arraylength]; for(int i =0;i< arraylength;i++) { students[i]=i; System.out.println(students[i]); } System.out.println("generated");

Categories : Java
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