http://cfa-www.harvard.edu/~john/

I build software systems for large astronomical instrumentation at 
[Smithsonian Astrophysical Observatory].

[JBR] in discussions

Reformed scripter, now Tcl'er...

When Tcl first came out, I thought it sucked, a rather slow interpreted language with square brackets for interpolation!  I wrote my own [lua]/Xt binding marrying it to Wcl and the BAE Matrix. Tcl 8.0 and a little playing around and I've written tcl ever since, good riddance to all that unsupportable code.

The nicest Tcl I've written is the [http://cfa-www.harvard.edu/~john/msg%|%message library].  This runs the [http://www.mmto.org%|%MMT Observatory] instruments and data acquisition systems [http://cfa-www.harvard.edu/mmti/].  All of the GUI code is Tcl, instrument control software is C.  If I'd know better all the code would be Tcl with C ([Critcl]) extensions.  There are several glue servers written in Tcl simply to handle protocol translation, very handy.

I wrote [starbase] which I use in the lab almost every day.  There is
a tcl API for starbase in pure tcl [[starbase.tcl]].

'''Tcl Things'''

   * [TNA - An array type for Tcl]
   * [arec - An array of records structure for Tcl]
   * [Deadfish]
   * [dict lappend2]
   * [string chunk]
   * [2013.0321 - Experience with nodejs and why Tcl is better]
   * [patience sort and the longest increasing subsequence]
   * [minimal coroutine iterator]
   * [Perplexing issue with Tcl DDE]
   * [JBR's tcloo.tcl] - simple tcloo helpers.
   * [critcl::cproc nproc : Number of processors]
   * [Operator precedence expression parser] 
   * [C level Thread Pool]
   * [Numeric arrays in pure Tcl]
   * [Canvas Structured Graphics]
   * [sqlite3 full text search example]
   * [modify a proc's behavior with a shim]
   * I wrote this thing for [Using Perl to get Excel] sheets from ascii
   * I wrote [procargs] because I got tired of long long proc argument lists
   * [RS] wrote a tiny [htext] hypertext help widget which I improve in [htext2]
   * Beginning a [tiny spreadsheet]
   * [A different FORTH] interpreter.
   * [ds9] image display
   * [Wikit page references as attributes]
   * [ip-drop] an adaptive firewall for linux
   * [cstat] - distributed system status client/server

   * [Laying out widgets in a grid]

   * [Writing DXF]
   * [Talking to a Delta Tau PMAC]
   * [TCP and recv]

   * [Subst template expansion helpers]
   * [Parsing Excel XLSX]

   * [unsource] - inline the content of  "source" commands. 
   * [parser-actions] - generate [Parser Tools] action procs from peg grammer and template files.
   * [Playing ISBL] - a little database query language

   * [Mavica 411 image conversion]

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