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+--- Thread: Tips: Declaring symbolic variables (/thread-10095.html)
Tips: Declaring symbolic variables - compsystems - 02-04-2018 04:06 PM
PHP Code:
#cas
fa(x):=
BEGIN
local y;
return x*y; // "Unitialized local variable y"
END:;
#end
fa(z) returns "Unitialized local variable y"
PHP Code:
#cas
fb(x):=
BEGIN
local y; purge(y) // purge = does not contain any object == y as symvar
return x*y;
END:;
#end
fb(z) returns y*z
PHP Code:
#cas
fc(x):=
BEGIN
local y; assume(y,symbol); // y as symvar
return x*y;
END:;
#end
fc(z) returns y*z
PHP Code:
#cas
fd(x):=
BEGIN
local y; y=assume[expression]; // y as symvar
return x*y;
END:;
#end
fd(z) returns y*z