API General Checklist

The stringWithFormat is used to return a string with a format control, which is a class method

Length: Returns a Nsuinteger type to find the value of the string length

Stringbyappendingstring: Concatenation of two strings, returning a new string

Stringbyappendingformat: Concatenation of the original string with the given string, given a string with a format control, returns a new string

Substringformindex: Returns a new string from the beginning of a position to the end of the substring

Substringtoindex: substring from start to position, return this string

Substringwithrange: The substring is returned according to the given range, which returns the substring

Componentsseparatedbystring: Splits the original string into several parts based on the passed strings, returning an array

Rangeofstring: Give a substring, the range of the string to the original string, return a struct (nsrange);(start position, length)

Stringbyreplacingoccurrencesofstring: Replaces all occurrences of a string in the original string with a new string, returning a new one

Hasprefix: Determines whether the original string header and the given string are consistent, returns a bool value

Hassuffix: Determines whether the tail is consistent and returns a bool value

Isequaltostring: Determines whether two strings are equal and returns a bool value

LowerCaseString: Returns a new string with all uppercase edges lowercase

IntegerValue: The string is converted to the base type, returning the numeric value of the Nsinteger type

Nsmutablestring inherits from NSString, and the unique function has

Appendingstring: Stitching in the original string

Deletecharactersinrange: Delete content within a given range in the original string

Insertstring:aindex: Adds a given string from a location in the original string

Replacecharactersinrange: Starts the given position in the original string, substituting n bytes for the given string powertrain

SetString sets the contents of the original string to the given string

Compare: string comparison that returns a value of type Nscomparisonresult

Nsarray content cannot be modified, only objects can be stored in an array

Arraywithobjects class method, create an array

Objectatindex find the corresponding element in the array based on the given subscript

Count gets the number of array elements

Firstobject

Lastobject

Containsobject determines whether an object is in an array

Indexofobject find the subscript of an object in an array

Isequaltoarray to determine if an array is equal

Nsmutablearray variable Array

Initwithcapacity Creating an array

AddObject adding elements to the array

Insertobject:atindex inserted at the subscript of the original array

Removelastobject Delete last Element

Removeobject: Removing an object from an array

Removeobject:inrange: Deleting a given object within a range of an array

Exchangeobjectatindex:withobjectatindex the position of the elements in the interchange array

Replaceobjectatindex:withobject

Iskindofclass: Judging the type of object

Nsdictionary Non-modifiable dictionaries

Initwithobjectandkeys: Create dictionary, add key value pair to dictionary when initializing, need to input key and value one by one

Dictionarywithobject:forkeys: Class method, which corresponds to a value (array) and a key (array), and returns a dictionary

Count

AllKeys

Allvalues

Objectforkey index data according to key

Nsmutabledictionary class method, create a dictionary that can modify the content

Setobject:forkey: Adding key-value pairs to the dictionary

Removeobjectforkey

Removeobjectforkeys:array

This article is from the "Create a Future" blog, please be sure to keep this source http://zhaopeichina.blog.51cto.com/9782414/1605158

API General Checklist