CA-GSS Statements and Commands › GSS Extended Functions › IO Functions › Number, String, and Variable Functions › System Information Functions › YANK()

YANK()

Use YANK() to remove any record from any stack belonging to any IMOD.

Syntax

The YANK() function has this syntax:

record = YANK(recnum,[stack],[owner],[cntl])

Arguments

The YANK() function takes these arguments:

record

Returned record or error text.

recnum

Record number to be removed from the stack.

stack

Number of the stack to be referenced.

Default: If a local stack is referenced, the current stack (as set by the SWAPSTAK() function); otherwise, the value is set by the owning IMOD task using the PUBSTACK(DEFAULT) function.

owner

IMOD ID of the stack's owner (for external reference). This value can be obtained from the variable imod_id in the owning IMOD task. It is also the value returned by the SPAWN() function. The default is the current IMOD task.

cntl

Name of a variable to receive the control information stored with the record. The default is not to retrieve control information.

Return Codes

The YANK() function produces these return codes:

101 - 105

ARG n INVALID

122

STACK NOT SPECIFIED AND NO DEFAULT

123

RECORD NOT FOUND

125

SPECIFIED IMOD NOT FOUND

126

STACK WRITE FAILED

127

REQUESTED STACK DOES NOT EXIST

128

SPECIFIED IMOD/STACK NOT AUTHORIZED

Example

rec = yank(2)               /* Record number 2 is removed from the
                               current stack  */
rec = yank(2,5)             /* Record number 2 is removed from
                               local stack 5  */
rec = yank(2,,453,'data')   /* Record 2 is removed from IMOD 453's
                               information is stored in the
                               variable data. */

Usage Notes

YANK() can specify a stack external to an IMOD only when the target stack has been declared public for both reading and writing.