Unary plus and minus 2004-03-13 - By Morten Barklund
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All,
Anyone also having played around with unary plus and minus:
var a_string = "5";
var a_new_string = a_string;
var a_number = +a_string;
var a_negative_number = -a_string;
This translates in flasm to:
push 'a_string', '5'
varEquals
push 'a_new_string', 'a_string'
getVariable
varEquals
push 'a_number', 'a_string'
getVariable
varEquals
push 'a_negative_number', 0.0, 'a_string'
getVariable
subtract
varEquals
That is, there is no such thing as unary plus (I'd expect it at least to do
type conversion) and unary minus is subtraction from 0.
Both results are correct of course, but is there any reason for not having
the unary operators in bytecode?
And is there any other reason for having the unary plus other than for the
completeness of the scripting language, as it is actually stripped from the
code when compiling?
// Morten Barklund - currently researching operators in-depth :)
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