Lists and Keyed Lists Lists A list is an ordered collection of elements, of no fixed length. The list elements can be any string values, including numbers, variable names, file names, bits of Tcl code and other lists. The latter is possible because lists are just strings with a special interpretation that gives them structure. Lists may be nested to any depth, and are useful for representing trees, among other things.
|Published (Last):||5 December 2005|
|PDF File Size:||13.19 Mb|
|ePub File Size:||6.46 Mb|
|Price:||Free* [*Free Regsitration Required]|
Gardajora Sign up or log in Sign up using Google. A keyed list is a list in which each element contains a key and value pair. Lists and Keyed Lists The way you install the extension package will depend on what distribution of Tcl you are using. Sign up using Email and Password. There is no limit to the recursive depth of subfields, allowing one to build complex data structures. Rakesh Lyf Iz Jrny 16 8. So, you could reference nested keys in a list with list1.
In new code, consider using dict instead. All keyed list management commands take the name of the variable containing the keyed list as an argument i. It could easily be written to work in 8.
However, the recommendation is often made these days to moving to Tcl 8. Not a problem when you have dozens of records, big problem when you have thousands. Intro to Tcl: Lists and Keyed Lists Other advantages include thread safety, and a significant difference in performance.
By default the key is a simple string, and anything is legal as a key. The keyed list commands are part of the TclX extension package. SS 28Sep — Probably people interested in keyed lists may be interested in alists for Tcl. LV If you have the code on a web page or in a web accessible source code repository, just mention the URL here.
The key-value pairs are referred to as fields. I have written a code to get all the elements. Donal Fellows k 15 Where can I upload the code keylisy comments? Email Required, but never shown. In order to get them to be present in your script, you have to issue the following command which will arrange for the relevant shared libraries to be loaded and scripts to be sourced.
Are you sure your code is correct? Subfields are actually fields where the value is another keyed list. You can get the same result this way requires Tcl 8. Except for command names, the implementation mimics the TclX keyed lists for the most part.
Lists and Keyed Lists
Fenrigore That installs the current version of a lot of packages, TclX among them. So, you could reference nested keys in a list with list1. This is an example of a keyed list:. The key-value pairs are referred to as fields.
Subscribe to RSS
Yozshuk LV you say for the most part. In new code, consider using dict instead. Are you sure your code is correct? Subfields are actually fields where the value is another keyed list. Where can I upload the code for comments? Sign up using Email and Password.
KEYLIST IN TCL PDF