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Yuki,
> TJ> You should read carefully function syntax:
>
> Okay, I will happily try this. But is is not a "should read
> carefully" situation. It is a programmer-versus non programmer
> situation. I simply did not understand that a parameter cannot be
> skipped. And either does the AFL check routine, either. ^_^ It
> says nothing is wrong with the code.
It is obvious that you have no experience in writing code.
However it is also obvious that parameters IN THE MIDDLE can not be skipped.
Let's imagine you have function called Circle
that gets 4 parameters x, y, radius and thickness.
Circle( x = 0, y = 0, r = 10, thickness= 1);
Now you "skip" two first and say
Circle( 20, 2 );
What happens?
Actually executed code is
Circle( 20, 2, 10, 1 );
The specified parameters take values as you written them,
other take default values (10, 1 ).
And you end up having circle with diameter of 10 plotted at coordinates (20,2)
with thickness = 1.
No error message is generated because it can not be generated
since all parameters are JUST NUMBERS.
You can however skip last parameter
Circle( 20, 2, 10 ); // thickness takes default value of 1 here
And you should also know that parameter names are just for reference
(they are called formal parameters).
When calling you DO NOT SUPPLY the names, just VALUES !
Writing:
AddColumn(pchng, "Pct. Chg.", format = 0.000);
makes no sense as "format" is just the formal parameter name,
for reference only (so you know what is the meaning of the parameter).
It is NOT used by the compiler/interpreter.
Instead when calling just provide VALUES:
AddColumn(pchng, "Pct. Chg.", 0.000);
or
AddColumn(pchng, "Pct. Chg.", 1.2, -1, -1, 200 ); // 200 is the width
One must NOT skip arguments in the middle. What you can do
is to skip last or a couple of last arguments.
Best regards,
Tomasz Janeczko
amibroker.com
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