instance variable在对象被创建时初始化，假如有5个对象，那5个对象中该instance variable可以有不同的值。static variable在类被第一次加载到jvm中时初始化，像c中的global variable，被所有instance共享，因此在multi-thread编程时要特别注意线程安全问题。
instance variable：实例变量，即类型的成员变量，且是非静态(即非static)的。local variable：局部变量，即在类型的成员方法体内定义的变量。class A{int a;//实例变量void B(){int b;//局部变量}}
The default value for instance variables in Objective-C is 0. Local variables take precedence over the instance variable and effectively hides it.
The local variables section contains a method's parameters and local variables. Compilers place the parameters into the local variable array first, in the order in which they are declared. Figure 5-9 shows the local variables section for the following two methods: 局部变量区包含对应方法的参数和...
and they can use the same array entry for more than one local variable. For example, if two local variables have limited scopes that donít overlap, such as the i and j local variables in Example3b below, compilers are free to use the same array entry for both variables. During the fir...
Declaration statements introduce a new local variable, local constant, or local reference variable (ref local). Local variables can be explicitly or implicitly typed. A declaration statement can also include initialization of a variable's value.
Declaration statements introduce a new local variable, local constant, or local reference variable (ref local). Local variables can be explicitly or implicitly typed. A declaration statement can also include initialization of a variable's value.
Declaration statements introduce a new local variable, local constant, or local reference variable (ref local). Local variables can be explicitly or implicitly typed. A declaration statement can also include initialization of a variable's value.
type Type type() throws ClassNotLoadedException Returns the type of this variable. Where the type is the type specified in the declaration of this local variable. Note: if the type of this variable is a reference type (class, interface, or array) and it has not been created or loaded ...
make _local an instance variable f3e8750 sebastiandev approved these changes Dec 17, 2020 View reviewed changes sebastiandev merged commit 60519ae into master Dec 30, 2020 Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment Reviewers sebastian...