Caché ObjectScript Reference - InterSystems Documentation

Caché ObjectScript Commands• VIEW offset:mode:length:newvalue places newvalue in the memory location identifiedby offset, mode, and length.You can examine data in memory with the $VIEW function.Note:InterSystems recommends that you avoid use of the VIEW command. When usedin any environment, it can corrupt memory structures.ArgumentspcAn optional postconditional expression. Caché executes the command if the postconditionalexpression is true (evaluates to a non-zero numeric value). Caché does not execute the commandif the postconditional expression is false (evaluates to zero). For further details, referto Command Postconditional Expressions in Using Caché ObjectScript.blockA block location, specified as an integer. If block is a positive integer, VIEW reads thatnumber block into the view buffer. If block is a negative integer, VIEW writes the blockcurrently in the view buffer to that block address. The block and theoffset:mode:length:newvalue arguments are mutually exclusive.offsetAn offset, in bytes, from a base address within the memory region specified by mode.modeThe memory region whose base address will be used to calculate the data to be modified. SeeModifying Data in Memory for a description of the possible values.lengthThe length of the data to be modified.Specify the number of bytes as an integer from 1-4. You can also use the letter C to indicatea four-byte address or the letter P to indicate a four byte word address). You must specifyboth the P or C and the positive integer in double quotes.If newvalue defines a string, specify the number of bytes as a negative integer from 1 through510. If the length of newvalue exceeds this number, Caché ignores the extraneous characters.If the length of newvalue is less than this number, Caché stores the supplied characters andleaves the rest of the memory location unchanged.152 Caché ObjectScript Reference