How to implement a callback to the help function call library function node in LabView?

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• Decode the help function

  Hello
  
  I'm new to the development of Oracle.
  
  MY requirement:
  
  I need to fill a column "ISMSG" by YES / NO based on the following condition
  
  When the code = the of ' or 'O'... the 'ISMSG' column should display any other YES no.
  
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  A NO
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  My code is correct? If Yes is the best way to do it?
  If this is not the case, correct the code.
  
  Is there an effective way to do it?
  
  Thanks in advance.

  Hello

  You can use CASES or DECODE for this; There is no need to use both.
  With the help of CASE:

  SELECT  c.code
  ,     CASE
           WHEN  c.code  IN  ('S', '0')  THEN  'YES'
                                             ELSE  'NO'
       END     AS ismsg
  FROM    table_x   c;
  

  Using DECODE:

  SELECT  c.code
  ,     DECODE ( c.code
              , 'S'      , 'YES'
              , '0'      , 'YES'
                            'NO'
              )          AS ismsg
  FROM    table_x   c;
  

  I suggest that you forget to DECODE and use always the CASE, at least while you are beginner.

  CASE may do everything they can to DECODE. There is a little bit simple, situations where DECODE is a little shorter than the CASE and therefore a bit clearer, but only a little and, as I said, these are just simple situations, and CASE is clear enough in them.
  DECODE is never much shorter or clearer than the CASE. The reverse is not true: there are many situations where the CASE is much, much shorter and lighter than DECODE.

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  Hello

  I try to resize a table of LStrHandles in a shared library. Here the code C - attached a picture of the appellant Subvi:

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  #include
  #include "extcode.h".

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  (* arg1)-> dimSize = (* arg1)-> dimSize;

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  LV: 8.2 teacher

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  You should also use NumericArrayResize() where possible because it supports various complications that can be difficult to deal with cross-platform programs. NumericArrayResize() use internal DSSetHSzClr() which initializes additional memory to 0. That would avoid the accident since LabVIEW interprets handles NULL as the default value for the data type, which would here be a string empty.

  #include "extcode.h".

  #if IsOpSystem64Bit

  uPtr uQ #define

  #else

  uPtr uL #define

  #endif

  typedef struct {}

  dimSize of Int32;

  LStrHandle Elm [1];

  } TDStrArr, * TDStrArrHdl;

  MgErr MyArrayFunc (TDStrArrHdl stop)

  {

  Int32 count = 4;

  LStrHandle p;

  MgErr err = noErr;

  / * Table could be non-empty, so have all of the items there are larger than we need * /.

  for (i = (* arr)-> dimSize - 1; i > = count; i--)

  {

  p = (* arr)-> Elm [i];

  If (p)

  DSDisposeHandle (p)

  }

  (* arr)-> dimSize = i + 1;

  / * resize the table handle to get enough space * /.

  ERR = NumericArrayResize (uPtr, 1, (UHandle *) & arr, count);

  If (err)

  return err;

  / * Fill in the data as desired * /.

  for (i = 0;! err & I)< count;="">

  {

  p = (* arr)-> Elm [i];

  #if! complicated

  ERR = NumericArrayResize (uB, 1, (UHandle *) & p, 1);)

  #else

  If (p)

  {

  ERR = DSSetHSzClr (p, sizeof (int32));

  }

  on the other

  {

  p = DSNewHClr (sizeof (int32));

  If (p)

  (* arr)-> Elm [i] = p;

  on the other

  ERR = mFullErr;

  }

  #endif

  If (! err)

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  }

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