[This message was posted by Joseph Gisana of <[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/2d00564b - PLEASE DO NOT REPLY BY MAIL.]
We you always receive a the string after the subtraction length? I get zero subtraction length and there is no string after it. > Jeff, > > an ASCII string delta is represented on the wire by an integer followed > by a string. The string is an SBIT-encoded value, so the length of the > string can be deduced without a separate length entry. > > The integer is interpreted as a subtraction length, ie. how many > characters to remove from the previous value before inserting the > string. The substraction length is represented as excess-1 when the > value is negative (in order to express negative zero). > > A few examples (1|"foo" means integer followed by string): > > prev --- wire ---- value --- comment ----------------- "" 0|"abc" "abc" > remove 0 chars, add "abc" at end "abc" 1|"a" "aba" remove 1 char, add > "a" at end "aba" -1|"d" "daba" remove 0 chars, add "d" at front "daba" > -3|"dc" "dcba" remove 2 chars, add "dc" at front > > BTW, what's your company affiliation? > > /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 -~----------~----~----~----~------~----~------~--~---
