eval: Difference between revisions
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Returns {{code|1}} | Returns {{code|1}} | ||
'''Tip''' | |||
Since {{code|eval()}} only accepts strings as parameter and it happens quite often that you have either numbers or strings following code is a good method to make it work in any case. | |||
<source lang="mtmacro" line> | |||
[h: foo = eval(string(bar))] | |||
</source> | |||
|also= | |also= | ||
{{func|evalMacro}}, | {{func|evalMacro}}, | ||
Revision as of 10:07, 18 June 2010
eval() Function
• Introduced in version pre-1.3
Evaluates an expression in a string and returns the result. The string contains the same type of expression that is usually located between macro brackets (e.g { } or [r: 2+2]). eval() is commonly used to evaluate dynamically built input() parameters, or dice expressions stored in token properties.
For more complex evaluation functions, see evalMacro() and execMacro().
Usage
eval(expr)Parameter
expr- A string containing the expression to be evaluated.
Examples
[r: eval("1+1")]Returns 2
[r: eval("3d6")]Returns a random number from 3 to 18.
[r: eval("TestVar = 2")]Returns 2
[h: TestVar = 2][r: eval("TestVar/2")]Returns 1
Tip
Since eval() only accepts strings as parameter and it happens quite often that you have either numbers or strings following code is a good method to make it work in any case.
[h: foo = eval(string(bar))]