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  Help Page - makebool

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All help pages, including this help page, are available in biterScripting with the help command. )




Function makebool Purpose Makes a bool value from other types of values. Return Type bool Syntax makebool(<type>(<value>)) Arguments <type> Can be real, int, str, bool. <value> A value of type <type>. This can be a constant, variable, function call to another function, expression, inline command or a combination of these, together resulting in a value of type <type>. Return Value A constant of type bool. The <value>, whether it is a variable, expression, or anything else, remains unchanged. Stream Input Streams apply to commands and not to functions. Stream Output Streams apply to commands and not to functions. Stream Error Streams apply to commands and not to functions, although any errors will be written here. Description Depending on <type>, makebool() function performs the type conversion as follows. <type> Return Value ------- ------------------------------------------------------------- real false if the real value is 0.0, else true. int false if the int value is 0, else true. str If the str value is "true", true is returned. Else, false is returned. bool The original bool value is returned. (A copy of the original bool value is made.) Restrictions Although any type can be converted to any other type using the makeXXXX() functions, be careful, as it may sometimes produce unintended results. All system functions are declared as global, and can not be redeclared (overloaded). Valid Examples var bool agreement var str s . . . # s is assigned one of the words - yes, no, true, false, on, off. sal "^yes^" "true" $s >null # We only want to alter $s, not see the output. sal "^on^" "true" $s >null set $agreement=makebool(str($s)) if ($agreement) echo "There is Agreement." else echo "There is No Agreement." endif Will indicate whether the response ($s) is positive or negative. Invalid Examples var str s ... # s is assigned a string value. # We will assume that s does indeed # contain either "true" or "false" var bool b1 var bool b2 set $b1 = $s # Automatic conversion. set $b2 = makebool(str($s)) # Correct coversion. $b1 assignment is incorrect, as it will be true irrespective of whether $s contains "true" or "false". $b2 assignment is correct, as it extracts the original bool value from the string. See Also constant var makereal makeint makestr type conversion system var

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