[solved] no value to function or sub

[exagonx]

Hello guys, I have a question:

lately I found myself in conditions where a certain function could be used with or without value but during the compilation if I don't specify an empty string or a zero it gives me an error, is there a way to ignore the absence of value between the brackets?

Code: Select all

sub x(byval value as integer)

if value < 0 then print "no value" else Print "the value are: " & value
end sub

x(20) ' with value
x() ' without value

[paul doe]

Hello guys, I have a question:

lately I found myself in conditions where a certain function could be used with or without value but during the compilation if I don't specify an empty string or a zero it gives me an error, is there a way to ignore the absence of value between the brackets?

Optional parameters. Just assign a default value to the parameter, like this:

Code: Select all

sub x(byval value as integer=0)

if value < 0 then print "no value" else Print "the value is: " & value
end sub

x(20) ' with value
x() ' without value

[exagonx]

Optional parameters. Just assign a default value to the parameter, like this:

thank you Work perfectly

Code: Select all

' adding = -1  give a default value
sub x(byval value as integer = -1)

if value < 0 then print "no value" else Print "the value are: " & value
end sub

x(20) 'with value
x() 'with no value