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On 2011/2/3 2:42 PM, Albert York wrote:

Anything can be used poorly. Assuming that the two processes passed
parameters instead of using the LDA. How would it be easier to
integrate them? You would need to change the parameter list for every
program that calls your changed program, even if it has no relevence
to the change you are making.


The problem with the LDA is that there's only one for the whole job. Anyone wanting to use the LDA mechanism has to use the same 1024 bytes, so everyone who wants to use it has to agree to the protocol for using it.

There are other alternatives to the LDA besides parameters, such as named data areas, files, environment variables, user spaces, service programs, etc etc. They have the same flexibility as the LDA but they don't have the "only one" problem of the LDA, so it's not necessary to setup a protocol to ensure that one application or part of an application doesn't step on another.

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