array of dictionaries

A dictionary class Two sets of classes A fast traversal of a three-array dictionary collection Four-array sorting Five array elements sorted by numeric size First, the Dictionary classA dictionary to save a collection of data

Swift provides two types of collections to hold multiple values-arrays (array) and dictionaries (Dictionary). Arrays store values of the same type in an ordered list. Dictionaries store values of the same type in an unordered collection, which can

The use of OC base mutable dictionaries with immutable dictionaries 1. Immutable dictionaries1.1 Creating an immutable dictionary //Create a dictionary//Note://1, the number of elements is even//2, each of the two elements is a key-value pair/

Original Addresshttp://blog.csdn.net/bihailantian1988/article/details/8433812iphone development array sorting (including dictionaries in the array)1. Normal array Ordering:Nsmutablearray *arr = [Nsmutablearray arraywithobjects:@ "0", @ "8", @ "6", @

Dictionary A dictionary is a storage that stores multiple types of data. Each value is associated with a unique key as the identifier of the value data in the dictionary. Unlike the data items in the array, the data items in the dictionary are not

iphone development array sorting (including dictionaries in the array)1. Normal array Ordering:Nsmutablearray *arr = [Nsmutablearray arraywithobjects:@ "0", @ "8", @ "6", @ "1", nil];Nsarray *sortedarray = [arr

ObjectiveIn fact, this section has been talking about the object of this universal data structure in JS. An object can be in a variety of forms, expressed as a difference between a dictionary and an array. More I think this chapter discusses more

String Differences between the strings in OC and Swift When the string type is nsstring in OC, the string type in Swift The string @ "" In OC, the string "" in Swift String in Swift is the first struct with higher

An array is an ordered set, and an array in OC can only store object types, and there is no limit to the type of object.Nsarray: Immutable groups: When an object is created, the number of elements in the array cannot be changedNssmutablearray:

lists (list): Lists are the most flexible, ordered collection object types in Python. Unlike strings, lists can contain objects of any kind, and lists are mutable objects that support modifying operations in situ, and can be implemented by means of