[fpc-pascal] Typed Constants vs. Variables
lists at stringsutils.com
Mon Apr 6 03:58:07 CEST 2009
Richard Ward writes:
> Where/why would one use a typed constant vs. a variable. i.e.
Any time you have a value you want to have in an accessible holder, but want
to ensure you will not change it's value by mistake.
> It seems to me the typed constant is superfluous and can potentially
> lead to bugs.
On the contrary. They help saveguards against bugs.
Imagine a team of people working on different parts of a large system.
One team defines a constant; someone on another team sees a piece
of code and thinkgs he working with a variable. He tries to change it and
the compiler throws an error because it is a constant. That error just saved
that system from a logical, possibly hard to find, error.
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