Re: basic BASIC question

In article <679d18c2$0$713$14726298@news.sunsite.dk>,
Arne Vajhøj  <arne@vajhoej.dk> wrote:

On 1/31/2025 1:35 PM, Arne Vajhøj wrote:

On 1/31/2025 1:28 PM, Simon Clubley wrote:

On 2025-01-31, Arne Vajhøj <arne@vajhoej.dk> wrote:

Is it common to use:
>
declare integer constant TRUE = -1
declare integer constant FALSE = 0

>
Oh goody. The "good" old days, when TRUE did not equal TRUE, are
back. :-)

 
Some old some new.
 
C and VMS Basic are old.
 
But some newer script languages also have a
"flexible approach" to true/false.
 
$ type bool.php
<?php
 
function test($expr) {
     echo ($expr ? 'true' : 'false') . "\r\n";
}
 
test(true);
test(false);
test(1);
test(0);
test(-1);
test("X");
test("");
test(null);
 
?>
$ php bool.php
true
false
true
false
true
true
false
false

>
$ type bool.py
def test(expr):
    print("true" if expr else "false")
>
test(True)
test(False)
test(1)
test(0)
test(-1)
test("X")
test("")
test(None)
$ python bool.py
true
false
true
false
true
true
false
false

If you really want to have a good time, look at how
JavaScript deals with this.  Things aren't just true
or false, they're truthy and falsy, and sometimes Nan.

https://www.youtube.com/watch?v=et8xNAc2ic8

- Dan C.