RSS 2.0
Sign In
# Wednesday, 24 February 2010

Why do we return to this theme again?

Well, it's itching!

In cobolxom there is an utility function to allocate names in scope. Its signature looks like this:

<!--
  Allocates unique names in the form $prefix{number}?.
  Note that prefixes may coincide.
    $prefixes - a name prefixes.
    $names - allocated names pool.
    $name-max-length - a longest allowable name length.
    Returns unique names.
-->
<xsl:function name="t:allocate-names" as="xs:string*">
  <xsl:param name="prefixes" as="xs:string*"/>
  <xsl:param name="names" as="xs:string*"/>
  <xsl:param name="name-max-length" as="xs:integer?"/>

We have created several different implementations (all use recursion). Every implementation works fair for relatively small input sequences, say N < 100, but we have cases when there are about 10000 items on input. Algorithm's worst case complexity, in absence of associative containers, is O(N*N), and be sure it's an O-o-o-oh... due to xslt engine implementation.

If there were associative containers with efficient access (complexity is O(LogN)), and construction of updated container (complexity is also O(LogN)) then implementation would be straightforward and had complexity O(N*LogN).

Wednesday, 24 February 2010 07:34:07 UTC  #    Comments [0] -
Thinking aloud | xslt
All comments require the approval of the site owner before being displayed.
Name
E-mail
Home page

Comment (Some html is allowed: a@href@title, b, blockquote@cite, em, i, strike, strong, sub, super, u) where the @ means "attribute." For example, you can use <a href="" title=""> or <blockquote cite="Scott">.  

[Captcha]Enter the code shown (prevents robots):

Live Comment Preview
Archive
<2010 February>
SunMonTueWedThuFriSat
31123456
78910111213
14151617181920
21222324252627
28123456
78910111213
Statistics
Total Posts: 364
This Year: 9
This Month: 0
This Week: 0
Comments: 223
Locations of visitors to this page
Disclaimer
The opinions expressed herein are our own personal opinions and do not represent our employer's view in anyway.

© 2018, Nesterovsky bros
All Content © 2018, Nesterovsky bros
DasBlog theme 'Business' created by Christoph De Baene (delarou)