GetValue()
Overrides MfPrimitive.GetValue()
OutputVar := MfBool.GetValue(obj)
OutputVar := MfBool.GetValue(obj, Default)
OutputVar := MfBool.GetValue(Obj, Default, AllowAny)
Gets the boolean var from Object or var containing boolean.
Obj
The Object or var containing, boolean
Can be any object of the matches type IsNumber, MfString or MfChar.
Returns a var containing a boolean True or False.
Static Method
Throws an error if unable to convert Obj to boolean.
Throws MfInvalidOperationException if not called as a static method.
Throws MfArgumentException if argument Obj is can not be converted to byte value.
Throws MfException for all other errors.
Gets a boolean var from Obj or returns Default value if Obj is unable to be converted to boolean. Default must be a value that can be converted to boolean or it will be ignored if Obj can not be converted to boolean and an error will be thrown.
Obj
The Object or var containing, boolean
Can be any object of the matches type IsNumber, MfString or MfChar.
Default
The boolean value to return if Obj is Cannot be converted to boolean.
Returns a var containing a boolean or Default value if Obj is unable to be converted to boolean.
Static Method
If Default is not a valid boolean or MfBool instance then GetValue will throw an error if Obj can not be converted to boolean.
If Default can not be converted to a boolean then this would method will yield the same results as calling MfBool.GetValue(Obj).
Throws MfInvalidOperationException if not called as a static method.
Gets a boolean var from Obj or returns Default value if Obj is unable to be converted to boolean.Default can be not boolean if AllowAny is true.
Obj
The Object or var containing, boolean
Can be any object of the matches type IsNumber, MfString or MfChar.
Default
The boolean value to return if Obj is Cannot be converted to boolean.
AlowAny
Determines if Default can be a value other then boolean. If true Default can be any var, Object or null; Otherwise Default must be a boolean value.
Static Method.
If AllowAny is true then Default can be any value including var, object or null. However if AllowAny is false then this method will yield the same result as calling MfBool.GetValue(Obj, Default).
Throws MfInvalidOperationException if not called as a static method.
Throws MfArgumentException if AllowAny is not a valid boolean.
Method is case in-sensitive, "t" and "T" are treated the same.
Passing in a string value of "true" or "false" is accepted. String values of "t" and "f" are also acceptable. Any number can be passed in, all numbers greater then zero result in true. All other numbers result in false.
Acceptable values for string or MfString instance are "T", "TRUE", "F" and "FALSE". If a string Value is numeric then it will be treated as a number. That is if the value is greater than zero the true is returned otherwise false. All other string values will cause an error to be thrown.
Acceptable values for MfChar are 0-9, "T", "t", "F" and "f". All other char values will cause an error to be thrown. If MfChar is a number then true is returned if the numeric value is greater than zero; Otherwise false is returned.
Throws MfNotSupportedException if incorrect number of parameters are passed in.
var := MfBool.GetValue(5) ; true
var := MfBool.GetValue(0) ; false
var := MfBool.GetValue(-11) ; false
var := MfBool.GetValue("t") ; true
var := MfBool.GetValue("true") ; true
var := MfBool.GetValue(0x00F4) ; true
var := MfBool.GetValue("0x00F4") ; true
var := MfBool.GetValue("f") ; false
var := MfBool.GetValue("False") ; false
var := MfBool.GetValue("hello world") ; Throws MfException error
var := MfBool.GetValue("hello world", false) ; false
var := MfBool.GetValue("hello world", "A") ; Throws MfException error
var := MfBool.GetValue("hello world", "A", true) ; A
c := new MfChar("6")
var := MfBool.GetValue(c) ; true
c := new MfChar("0")
var := MfBool.GetValue(c) ; false
c := new MfChar("t")
var := MfBool.GetValue(c) ; true
strObj := new MfString("t")
var := MfBool.GetValue(strObj) ; true
strObj := new MfString("9")
var := MfBool.GetValue(strObj) ; true
strObj := new MfString("10")
var := MfBool.GetValue(strObj) ; true
var := MfBool.GetValue(9999.587) ; true
var := MfBool.GetValue(-9999.587) ; false
objB := new MfByte(233)
var := MfBool.GetValue(objB) ; true
objI := new MfInteger(-6739)
var := MfBool.GetValue(objI) ; false