Assignments

Whenever you use a more complex expression, it is often useful to store it behind a name so that it can be used once or multiple times elsewhere.

In µcad, stored values are always immutable, meaning that once a value has been stored behind a name, it cannot be reset in the same context. This is different from the variables known in other programming languages.

use std::math::sqrt;

a = 2cm;
b = 5cm;
c = sqrt(a * a + b * b);

std::print("{c}");

[!TIP] If a name starts with an underscore (like _this_name) that suppresses any warning about if it is not in use.

There are several kinds of assignments for different purposes. A property for example is always related to a workbench so it can only be defined within one. Here is a complete list of all assignment types available in µcad and where they can be defined (✅) and where they are prohibited (❌):

Target	Key-word	Source File	Module	Building Code	Func-tion	Initial-ization	Initial-izers
Value	-	✅	❌	✅	✅	❌	✅
Model	-	✅	❌	✅	❌	❌	❌
Constant	`const`	✅	✅	❌	❌	✅	❌
Public	`pub`	✅	✅	❌	❌	❌	❌
Property	`prop`	❌	❌	✅	❌	❌	❌
Model	-	✅	❌	✅	✅	❌	✅

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Assignments