ARRAY

[MdaSolution]

how I can del an element of a array and refresh the array ?
I have a array aData sample
56,.t.
102,.f.
103,.f.
I want delete only the array element with .t. and refresh the array aData

[ukoenig]

// I want delete only the array element with .t. and refresh the array aData

PRIVATE aData[5][2]
aData[1] := { 56, .T. }
aData[2] := { 102, .F. }
aData[3] := { 103, .F. }
aData[4] := { 104, .T. }
aData[5] := { 105, .F. }

// Optional
PRIVATE aNEWARRAY := {}

// Show all Array-Elements
I := 1
FOR I := 1 TO LEN(aData)
Msgalert( aData[1] )
NEXT

// Delete all Elements with .T.
I := 1
Y := LEN( aData )
FOR I := 1 TO Y
IF aData[2] = .T.
ADEL( aData,I )
Y-- // Reduce Array-Length - 1 ( dynamic FOR / NEXT )
AADD(aNEWARRAY, { aData[1], .F.}) // Optional save all .F. to a new Array
ENDIF
NEXT

// Shows 102, 103, 105 ( original ARRAY with only .F.)
I := 1
FOR I := 1 TO Y ( Y = new Array-length )
Msgalert( aData[1] )
NEXT

// Optional
I := 1
FOR I := 1 TO LEN( aNEWARRAY )
Msgalert( aNEWARRAY[1] )
NEXT

Best Regards
Uwe

[nageswaragunupudi]

This is simpler

Code: Select all

AEval( AClone( aData ), { |a,i| If( a[ 2 ], ADel( aData, i, .t. ), ) } )

[hua]

Take note, in Rao's code, ADel() has 3 parameter. The 3rd parameter is an xHarbour extension which I think is not supported by Harbour

[nageswaragunupudi]

Take note, in Rao's code, ADel() has 3 parameter. The 3rd parameter is an xHarbour extension which I think is not supported by Harbour

This works with Harbour too. Just link xhb.lib. Harbour make file in samples folder includes this lib

[mmercado]

Dear Rao:

This works with Harbour too. Just link xhb.lib. Harbour make file in samples folder includes this lib

The function in xhb.lib that does the job is named xhb_adel()

Best regards.

Manuel Mercado Gómez.

[nageswaragunupudi]

Thanks Mr. Mercado.
Yes. You are right.
If we need syntax compatibility with xharbour, we need to include xhb.ch in the program file and link it with xhb.lib.

The logic I posted above is faulty.
Here is the corrected one

Code: Select all

#include "Fivewin.ch"
#ifndef __XHARBOUR__
#include "xhb.ch"
#endif

function main()

   local aData := { { 1, .t. }, { 2, .f. }, { 3, .t. }, { 4, .f. } }
   local n := 1

   xbrowse( aData )
   AEval( AClone( aData ), { |a,i| If( a[ 2 ], ADel( aData, n, .t. ), n++ ) } )
   xbrowse( aData )

return nil
 

[MdaSolution]

thanks to all.
I corrected the error .