4D v15RESOLVE POINTER |
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4D v15
RESOLVE POINTER
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RESOLVE POINTER ( aPointer ; varName ; tableNum ; fieldNum )
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Theme: Language
Starting with 4D v15, pointers to two-dimensional arrays are supported. For example, you can now write ->a{1}{2}.
As a result, when passing a pointer to an element of a two-dimensional array, the fieldNum parameter receives the element number of the second dimension. Also, RESOLVE POINTER now returns -1 instead of 0 in fieldNum for pointers to variables and single-dimension arrays.
The result table is now:
Referenced object | Parameters | ||
varName | tableNum | fieldNum | |
... | |||
Variable | Name of the variable | -1 | -1 |
Array element | Name of the array | Element number | -1 |
2D Array element | Name of the 2D array | Row element number | Column element number |
... |
Here is an example of a 2D array pointer:
ARRAY TEXT(atCities;100;50)
C_POINTER($city)
atCities{1}{2}:="Rome"
atCities{1}{5}:="Paris"
atCities{2}{6}:="New York"
// ...other values
$city:=->atCities{1}{5}
RESOLVE POINTER($city;$var;$rowNum;$colNum)
//$var="atCities"
//$rowNum="1"
//$colNum="5"
Product: 4D
Theme: Language
4D v15 - Upgrade (standard edition) ( 4D v15)
Inherited from : RESOLVE POINTER ( 4D v15)