OpenEuphoria

puzzling code

• Posted by joshua goldberg <futures8 at bellsouth.net> Aug 22, 2001
• 495 views

Hi, All.

While studying Matt Arriola's Crypt.ex code (Recent User Contibutions),
I found a line of code which I'm at a loss to understand.
Simulated code follows;

-- begin code

with trace
sequence bits
object dummy
trace(1)

bits = "11000111001111000011100110101011"

bits -= '0'    <--- what's this doing???

dummy = 21      -- has no meaning ... here just for the trace
-- end code

if you run the above which trace on,  and watch the display of
variables under the trace window, you'll see how the line
"bits -= '0' transforms the sequence bits. Can somebody explain
what's happening ?

Appreciate any help.