Scilab 5.5.2
- Справка Scilab
- API Scilab
- List manipulation
- isListType, isTListType, isMListType
- Boolean reading (Scilab gateway)
- Boolean writing (Scilab gateway)
- Boolean sparse reading (Scilab gateway)
- Boolean sparse writing (Scilab gateway)
- Create List (Scilab gateway)
- Double reading (Scilab gateway)
- Double writing (Scilab gateway)
- Get child item (Scilab gateway)
- Item Number (Scilab gateway)
- Integer reading (Scilab gateway)
- Integer writing (Scilab gateway)
- Pointer reading (Scilab gateway)
- Pointer writing (Scilab gateway)
- Polynomial reading (Scilab gateway)
- Polynomial writing (Scilab gateway)
- Sparse reading (Scilab gateway)
- Sparse writing (Scilab gateway)
- String reading (Scilab gateway)
- String writing (Scilab gateway)
Please note that the recommended version of Scilab is 2025.0.0. This page might be outdated.
However, this page did not exist in the previous stable version.
Item Number (Scilab gateway)
How to get the number of items in a list (list, mlist, tlist).
Calling Sequence
SciErr getListItemNumber(void* _pvCtx, int* _piAddress, int* _piNbItem)
Arguments
- _pvCtx
Scilab environment pointer, pass in "pvApiCtx" provided by api_scilab.h.
- _piAddress
Address of the list.
- _piNbItem
Return the number of items.
- SciErr
Error structure where is stored errors messages history and first error number.
Description
This help describes how to get the number of items in a list (list, mlist, tlist).
Gateway Source
#include "api_scilab.h" int get_list_info(int* _piAddress); void insert_indent(void); static int iLocalTab = 0; int common_list(char *fname,unsigned long fname_len) { SciErr sciErr; int *piAddr = NULL; CheckInputArgument(pvApiCtx, 1, 1); sciErr = getVarAddressFromPosition(pvApiCtx, 1, &piAddr); if(sciErr.iErr) { printError(&sciErr, 0); return 0; } get_list_info(piAddr); AssignOutputVariable(pvApiCtx, 1) = 0; return 0; } int get_list_info(int* _piAddress) { SciErr sciErr; int i = 0; int iRet = 0; int iItem = 0; //get list item number, failed if variable is not a kind of list sciErr = getListItemNumber(pvApiCtx, _piAddress, &iItem); if(sciErr.iErr) { printError(&sciErr, 0); sciprint("This variable is not a list"); return 0; } sciprint("List (%d items) -> address : 0x%08X) : \n", iItem, _piAddress); for(i = 0 ; i < iItem ; i++) { int iType = 0; int* piAddrChild = NULL; sciErr = getListItemAddress(pvApiCtx, _piAddress, i + 1, &piAddrChild); if(sciErr.iErr) { printError(&sciErr, 0); return 0; } sciErr = getVarType(pvApiCtx, piAddrChild, &iType); if(sciErr.iErr) { printError(&sciErr, 0); return 0; } if(iType == sci_list || iType == sci_tlist || iType == sci_mlist) { insert_indent(); sciprint("Child %d -> ", i + 1); iLocalTab++; iRet = get_list_info(piAddrChild); iLocalTab--; if(iRet) { return 1; } } else { insert_indent(); sciprint("Child %d -> address : 0x%08X\n", i + 1, piAddrChild); } } return 0; } void insert_indent(void) { int i = 0; for(i = 0 ; i < iLocalTab ; i++) { sciprint("\t"); } }
Scilab test script
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