FUNCTIONUnder review

ValType

ValType( <xValor> )

Returns the type of the value received as parameter.

Data typesVariablesValidation

01 · OVERVIEW

Overview

Returns the type of the value received as parameter. This page was created from the historical training material and structured for quick reference, with practical notes and cautious use in current Protheus environments.

02 · SYNTAX

Syntax

ValType( <xValor> )

Parameters

xValor

AnyRequired

Parameter used by the function. Check the Portuguese source page for the detailed original wording while this entry remains under review.

03 · PRACTICAL EXAMPLE

Simple type validation

User Function ExValType()
    Local xValue := Date()

    If ValType(xValue) == "D"
        MsgInfo("Date entered: " + DToC(xValue))
    EndIf
Return

Expected result

The routine confirms that the value is a date before formatting it.

BEST PRACTICES

Os retornos seguem os identificadores de tipo da linguagem, como C, N, D, L, A, B, O e U.
Use em funções que aceitam valores flexíveis e precisam validar a entrada.

COMMON PITFALLS

This entry is under review because it was structured from historical training material.
Confirm behavior in the Protheus/AppServer release used in your environment.

ValType

Overview

Syntax

Parameters

Simple type validation

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