FUNCTIONUnder review
Recno
Recno() -> nRecReads the current physical record position.
Overview
Recno identifies the current record in the selected alias; it is neither row count nor a stable key across tables, environments or restores. TDN documents a TOPCONN EOF sentinel and zero without an open area. Check Eof before using the value; positivity alone does not prove a valid record. The uninvoked block requires the caller’s alias. (Sources: refs. 1–1.)
Syntax
Recno() -> nRecReturn value
Numeric: current position according to RDD and state.
Commented example
#Include "Protheus.ch"
User Function Ed614()
// Caller must check Select(cAlias)>0 and !Eof().
Local bRecord := {|cAlias| (cAlias)->(Recno())}
ConOut(ValType(bRecord))
Return NilExpected result
Creates a block without reading a table in this exercise. Under review: editorial example neither compiled nor run in Protheus. Check includes, release, RDD and context before testing.
- Qualify the alias and do not treat EOF sentinels as valid addresses.
- Under review: editorial example neither compiled nor run in Protheus. Check includes, release, RDD and context before testing.
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