In the first version of iOS:We declare both the property and the underlying instance variable for the output, when the property is a new mechanism for the OC language, and you must declare the instance variable that corresponds to it, for
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Member variables and local variables, member variables local variables
1. member variables
1. Description of member variables
The variables defined in the class body are also called member variables (also called attributes or fields ). The member
Variable
Variables are abstract concepts that can store calculated results or can represent values. Variables can be accessed by variable names.
Variable declarationDeclaring variables is generally used in the following
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Document directory
I. Basic Knowledge
Ii. Pre-Defined variables
Iii. variable range
Iv. Variable
V. php external variables
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1. Data and Storage types of Variables
In C, each variable has two attributes: Data Type and storage type.Data TypeThat is, the generic, integer, and floating point types;Storage TypeIt refers to the storage mode of variables in the memory. It
Class: Class is an abstract concept that has the same attributes and behavior equivalent to a class of elements.
Distinguish between a class or an object to see if it continues to be subdivided.
In OC, a class is a struct that represents an object
Implementation of local variables
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At the bytecode level, each method has a local variable array that stores the parameters of the current method, the variables declared within the method, and if the
Word breaker Introduction: Phpanalysis Word segmentation program uses a thesaurus of Unicode, using reverse matching pattern word segmentation, theoretically compatible with a wider range of coding, and Utf-8 coding is particularly convenient.
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