What is the difference between a static assert and a unit test?

[Steven Schveighoffer]

On 4/21/22 6:26 PM, Alain De Vos wrote:
> I don't know when to use a static assert and when to use a unit test ?

An assert in general is something that must be true for the program to 
be valid.

A normal assert is some runtime condition that must be true or the 
program will be terminated.

A static assert is some compile-time condition that must be true or the 
compilation will be terminated.

A unittest is a completely different thing -- this is testing generally 
a piece of your program (like a function), to ensure that given known 
inputs it returns known results. A unittest uses asserts to test that 
the results are valid.

-Steve