functionmyfunA(x)persistentxendfunctionmyfunB x = 0;persistentxend To clear a persistent variable, useclearwith the name of the function that declares the variable. For example,clear myFun. Extended Capabilities C/C++ Code Generation Generate C and C++ code using MATLAB® Coder™. ...
Matlab中的变量类型(Types of Variables)分为局部变量(Local Variable),全局变量(Global Variable)和局部静态变量(Persistent Variables). 局部变量: 如果一个函数内的变量没有特别声明, 那么这个变量只在函数内部使用, 即为局部变量. 全局变量: 全局变量可以被多个不同的函数和基本工作空间(base workspace)共享. 如果...
3、定义多个global/全局变量方式为: global var1 var2 var3 ……; 4、去掉/消除某一个或多个全局变量方式为:clear var1 var2 var3……; global variable实际存在于global workspace,而在各个使用了的workspace中有其link,所以使用clear时会表现得有点不同。 当我们使用clear name删除一个变量时,如果这个变量是...
文件test_persistent_global.m function test_persistent_global() clear update_persistent_var ; % 清除函数中的变量 my_persistent_var % 这里需要注意 function update_persistent_var 需要存放在独立的m文件中,否则不能清除. % 测试 persistent variable for idx=1:3 update_persistent_var(); end % 测试globa...
Theclearfunction does not clear persistent variables in local or nested functions. On UNIX®systems,cleardoes not affect the amount of memory allocated to the MATLAB process. Extended Capabilities expand all Version History Introduced before R2006a ...
1%fileName: persistex.m2%This script demonstrates persistent variables3%The first function has a varibale"count"45fprintf('This is what happens with a "normal" variable: \n')6nopersis7nopersis89%The second function has a persistent varibale"count"10fprintf('\nThis is waht happens with a pe...
Define three variables,a,b, andc. Then, clearaandc. a = 1; b = 2; c = 3; clearvarsacwhos Name Size Bytes Class Attributes b 1x1 8 double Only variablebremains in the workspace. Clear All Variables Except Specified Remove all variables from the workspace except for the variablesCandD...
Clear all variables except the initial variables, using the function form ofclearvars. When using the function form of a syntax, enclose input character vectors in single quotes, and separate them with commas. clearvars('-except',initialVars{:}) ...
Function, thenclearreinitializes any persistent variables in the function. Specifying a local or nested function is not supported. Script or function that is currently executing or a function locked bymlock, thencleardoes not remove it. Global variable, thenclearremoves it from the current workspace...
Clear the function and call it another two times. Clearing the function also clears the persistent variable. clear myFun myFun myFun n = 1 n = 2 Edit the myFun function to include a call to mlock. function myFun() mlock persistent n if isempty(n) n = 0; end n = n+1 end At the...