Releases/ChangesIn2.5

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New features in the 2.5 release of kdb+

Below is a summary of changes from v2.4. Commercially licensed users may obtain the detailed change list / release notes from http://downloads.kx.com

.z.W

new feature in 2.5 2008.12.31

.z.W returns a dictionary of ipc handles with the number of bytes waiting in their output queues.

e.g.

q)h:hopen ...
q)h
4
q)(neg h)({};til 1000000);.z.W
4| 4000030
q).z.W
4| 0

Changes to casting

`$"" is a single

`$() is a list (in 2.4 it was a single)

e.g.

in 2.4

q)`something ^ `$.z.x 0
`something

in 2.5

q)`something ^ `$.z.x 0
`symbol$()

overcome change with e.g.

(`$.z.x)0
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