FF

FF is Federico Ferri (but also 255 in hexadecimal notation)

My primary email is:

string map {R ri O co Q de Z fe I it W ma L il} [email protected]

Random notes: Linux user since 1998. I'm into Computer Science Engineering. I like to play with electronics, and music, and I like mixing the two things together, that's why I own some music synthesizers and sporadically build some of them (or related accessories). I play piano. My works is concerned about Linux and scripting. I am slowly moving to Tcl to be the official scripting used in our systems.

My projects:

ResistorFinder: an utility to quickly find resistors of a specified value, by trying singles, series and parallel combinations, highlighting the better matching one
MimeTexPreview: embedding TeX formulas into Tcl canvas
MimeTexBuffer: as above, plus interactive editing [experimental!]
Periodic Table of Chemical Elements with clickable elements. A tiny example of tDOM/XPath usage.
TrackerWidget: a grid/table/spreadsheet like widget
HexEdit - an hexadecimal editor (really just a demo of some TrackerWidget's features)
TemplaTcl: a Tcl template engine suitable and designed for web page generation (it embeds nicely (and inline!) into HTML/XML documents; WYSIWYG-editor friendly). Really has unlimited uses: I use it also for code generation.
KeyboardChords: a simple keyboard chords generator
PhysicsPlayground: playing with physics (mechanics)... a little demo
GetOpt-ish: my GetOpt'ish library for parsing command line options in GNU style
TheTwine: a little game where a bunch of dots are connected by a continous line, and you have to tidy up the mess
MazeSolver: the simplest maze-solving algorithm. how a better algorithm could work?
TkPipes: the (in)famous game :P
(another) command profiler: profiler which measures time of single commands, instead of timing procs
a checkpoint-based profiler: hoping this fullfils the lack of (another) command profiler, and it should have less overhead
Graphs: BFS an DFS animated demo: an animated demonstration of BFS/DFS over a connected graph.
Graphs: Dijkstra animated demo: an animated demonstration of Dijkstra's algorithm for finding the minimum cost path over to all edges of a cyclic graph.
DataflowCanvas: trust the name - it's a DataFlow canvas
FF colorpicker: a multi-mode (actually: presets, HSV) color picker megawidget

My snippets:

Since I keep re-coding and re-coding, and asking on #tcl things I (once) know how to do... I'll begin putting here my code snippets, in the hope they will be useful again to me (ah, and to others of course! ;P)

Canvas moving objects and toggle tags is a very minimal example on how to make interactive objects in canvas with few code. Relevant features: moveable canvas objects, mouse hover changes style, middle click toggle (moveable) tag.
Widget Hiding as opposed to Widget Overloading started as a simple widget with a Tk-like programming interface (would you call that gadget?) but now it's seriously taking the form of a real useful widget. Stay tuned
Operations research - Simplex Algorithm is about linear programming problems
(buggy) iris animation -- how to solve such a z-index problem?? It's like the Escher's Infinite Staircase

Random stuff:

XChat Plugins -- I use XChat and occasionally I write plugins -- (how to: simply put pluginname.tcl into $HOME/.xchat2/ and restart xchat or type /reload)

KeepNick.tcl: recovers your nick and re-identifies you after server disconnection. you can now have a list of linked nicknames and freely switch from one to another:

set ::nicks_to_keep {FEDE31C0 federico__}
set ::nickserv_pw  "xxxxxxxxxxxxxx"

timer -repeat 30 {
    if {[lsearch -exact $::nicks_to_keep [me]] == -1} {
        set nick_to_keep [lindex $::nicks_to_keep 0]
        /msg NickServ RECOVER $::nick_to_keep $::nickserv_pw
        /msg NickServ RELEASE $::nick_to_keep $::nickserv_pw
        /nick $::nick_to_keep
        /msg NickServ IDENTIFY $::nickserv_pw
        print "keepnick.tcl: recovered your nickname"
    }
}

ChatMap.tcl: list all channels people are in, in addition to current channel

set chatmap_chanlist [list]
set chatmap_whoisf 0
set chatmap_timerid -1
 
on 319 channel_list {
    if {$::chatmap_whoisf} {
        if {[timerexists $::chatmap_timerid]} {
            killtimer $::chatmap_timerid
        }
        set ::chatmap_timerid [timer 5 {
            set ::chatmap_whoisf 0; process_chans_end
        }]
        process_chans [lindex [split $_rest :] 1]
    }
}
 
proc process_chans_begin {ul} {
    set ::chatmap_chanlist [list]
    set ::chatmap_whoisf 1
    foreach u $ul {/whois $u}
}

proc process_chans {l} {
    foreach chan $l {
        if {[lsearch -exact $::chatmap_chanlist $chan] == -1} {
            lappend ::chatmap_chanlist $chan
        }
    }
}

proc process_chans_end {} {
    print "channels found: $::chatmap_chanlist"
}
 
alias channelspy {
    set fields [lindex [users] 0]
    foreach record [users] {
        if {$record == $fields} {continue}
        lassign $record {*}$fields
        lappend r $nick
    }
    process_chans_begin $r
    complete
}

Quote:

There are never any bugs you haven't found yet.

anonymous poster - I thought, when I first saw the title of this page, it was going to be about Marvel's "Fantastic Four"... sigh. Wonder if Reed Richards embeds Tcl into his devices to beat Doom, etc.

escargo - Wouldn't an extension of a different existing language be more likely, namely Fantastic Forth?

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