Re: INZ in all D-specs : Was Problem with moving Data Structures

My ignorance is shining through again.

Isn't there a difference between "CLEAR" and "RESET" opcodes?

"The CLEAR operation sets all elements in a structure or variable to their default value depending on the field type (numeric, character, graphic, UCS-2, indicator, pointer, or date/time/timestamp).

The RESET operation sets all elements in a structure or variable to their initial values (the values they had at the end of the initialization step in the program cycle)."

I have always taken this to mean that if one defines a D spec as:

D wGuru s 20 inz('Simon Coulter')

and then later
wGuru = 'Coulter, Simon'
CLEAR wGuru // ( wGuru becomes blanks)
RESET wGuru // ( wGuru becomes "Simon Coulter")




Simon Coulter wrote:

On 21/10/2009, at 1:01 AM, Christen, Duane wrote:

Yes, CLEAR on a DS blanks numeric subfields.

:quote.
CLEAR (Clear)
Free-Form Syntax CLEAR {*NOKEY} {*ALL} name
Code Factor 1 Factor 2 Result Field Indicators
CLEAR *NOKEY *ALL name (variable or record format)

The CLEAR operation sets elements in a structure (record format, data structure,
array, or table) or a variable (field, subfield, array element or indicator), to their
default initialization value depending on field type (numeric, character, graphic,
UCS-2, indicator, pointer, or date/time/timestamp). For the default initialization
value for a data type, see “Chapter 10. Data Types and Data Formats” on page 165.
If the structure or variable being cleared is variable-length, its length changes to 0.
The CLEAR operation allows you to clear structures on a global basis, as well as
element by element, during run time.
:equote.

Operative part of that quote is "elements in a structure" ... see the example code in the RPG Reference for clarification.

The only issue is where a character field and numeric field overlap in which case the order in which they appear in the structure determines the final initialised value.

Regards,
Simon Coulter.
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