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IF (function)

The IF function allows you to evaluate whether a certain expression is TRUE (not 0) or FALSE. (0). Depending on that check, the function will return the second (if TRUE) or third (if FALSE) argument.

This function evaluates the expression at compile time: it follows that the return value does not change at runtime. There are three versions of this function, one for each type of value that can be returned. There is a version that returns integers, one for floating point numbers, and one for strings.

This function is particularly useful for carrying out a conditional evaluation of constants which, otherwise, would require evaluation at runtime, wasting time and occupying useless space.

syntax example abbreviation back to keywords

SYNTAX

 = IF (exp, valueTrue, valueFalse )


Legend
  • id : identifier
  • type : datatype
  • v : value
  • "..." : string
  • [...] : optional

EXAMPLE

 pictureToUse = IF(SCREEN WIDTH > 160, "large.png", "small.png" )


ABBREVIATION: If

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In order to reduce space you can use this abbreviation for this instruction: 

IF (function) ↔ If

Any problem?

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