valueType

valueType ( expression : any ) : integer

Parameter	Type		Description
expression	any	→	Expression whose resulting value to be tested
Result	integer	←	Data type number

Description

The valueType command returns the type of the value resulting from the evaluation of the expression you passed as parameter.

The command returns a numeric value that can be compared with one of the following constants provided by Qodly:

Constant	Value
kBlob	30
kBoolean	6
kCollection	42
kDate	4
kInteger	9
kNull	255
kObject	38
kPicture	3
kNumber	1
kString	2
kTime	11
kUndefined	5
kVariant	12

This command is designed to return the type of a scalar expression, i.e. the value stored in or returned by the expression parameter. In particular, it can be applied to the following Qodly expressions:

• object properties (emp.name),
• collection elements (myCol[5]).

note

Numerical object properties are always considered number values:

var o : object
var vType : integer
o = newObject("value",42)
vType = valueType(o.value) //vType = kNumber

Example 1

You want to handle the various possible types of an object property value:

switch
	:(valueType(o.value) == kNumber)
  //handle a numeric value
    :(valueType(o.value) == kString)
  //handle a string
    :(valueType(o.value) == kObject)
  //handle a sub-object
       ...
end

Example 2

You want to sum up all numeric values in a collection:

var col : collection
var colSum : number
col = newCollection("Hello",20,"World2",15,50,currentDate,true,10)
for(i,0,col.length-1) //-1 since collections start at 0
	if(valueType(col[i]) == kNumber)
       colSum = colSum+col[i]
    end
end