Navigation:  Language Reference > Types > Data Types

For all parameters, variables, initial conditions etc. 20-sim supports the following data types:

 

The declaration of data types can be done in the constants, parameters and variables sections of the model. E.g.:

 

parameters

 real a = 1;

 integer B[2,2];

variables

 string c;

 boolean yesno;

 

Declaration of data types in equations is not allowed. E.g.:

real v = sin(t*a + b); // This is not allowed!

 

Hidden

To prevent users from inspecting variables, parameters or constants (e.g. for encrypted models) or decreasing the list of parameters and variables, the keyword hidden can be applied. This keyword should follow the data type. For example:

 

parameters

 real hidden a = 1;

 integer hidden B[2,2];

variables

 string hidden c;

 boolean hidden yesno;

Interesting

To allow for a quick selection of variables in the Variable Chooser, the keyword interesting can be applied for variables. This keyword should follow the data type. For example:

 

parameters

 real a = 1;

 integer B[2,2];

variables

 string interesting c;

 boolean interesting yesno;

 

Interesting variables are shown, even when all options are deselected in the Variable Chooser. This makes it possible to quickly select variables out of a large list.