[This message was posted by Rolf Andersson of Pantor Engineering <[email protected]> to the "FAST Protocol" discussion forum at http://fixprotocol.org/discuss/46. You can reply to it on-line at http://fixprotocol.org/discuss/read/2572c90d - PLEASE DO NOT REPLY BY MAIL.]
Just to add some information for the forum readers that are planning to implement an encoder and/or decoder: > The exception is for the constant operator. For this operator the > data is NEVER sent down the wire, and the presence map bit for this > one case indicates whether the field is included in the application > data. This overloading of the meaning of the presence map bit, > while certainly understandable, may also be a source of the original > poster's confusion. There is another case where the pmap is used to indicate presence. Optional groups also use a pmap bit. Obviously, in this case the contents of the group will appear in the stream if its pmap bit is set (section 10.5.1) /Rolf [You can unsubscribe from this discussion group by sending a message to mailto:[email protected]] -- You received this message because you are subscribed to the Google Groups "Financial Information eXchange" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/fix-protocol?hl=en.
