lsparrish

Idea: Liquid nitrojen jet cutter for CNC

This would be a novel form of CNC. Instead of waterjet, use liquid nitrogen.

A small high-tensile canister full of LN2 would be equipped with a small nozzle at the bottom, which would eject a high-speed burst of liquid nitrogen. Pressure would come from gas build-up in the top from boiling.

lsparrish

#==========Bitzap: a tiny bitcoin-like program.==========#
# The goal is secure published transactions. Not yet completed.
# Install Notes:
#  Uses dbdict, a recipe from: http://code.activestate.com/recipes/576642-persistent-dict-with-multiple-standard-file-format/
#  On Ubuntu the Crypto library can be installed with "sudo apt-get install python-crypto"
# Details:
#  Addresses are first 32 chars of a hash of the public key.
#  Transaction IDs are first 32 chars of the buyer's signature.
#  Receipts are lists of debits and credits that have been applied to each address.
#  Buyer is sender, seller is receiver.

lsparrish

chain: struct'
  : {     (    -n ) 0 ;
  : field ( nn"-n ) over ` : .data  ` + ` ; + ;
  : }     (  n"-  ) ` : .data ` here ` swap ` allot ` constant ` ; ;
  : clone ( a-a   ) here swap 3 + @ allot ;
;chain
with struct'
{
 2 field .bar
 1 field .baz

lsparrish

chain triggers'
{{
  variable dict
  : m dup 0 =if nip 0 ;then 2dup 1+ @ =if nip 2 + 0 ;then ;
  : n here dict @ , dict ! , ;
  : ? dict repeat @ m 0; again ;
  ---reveal---
  : __? @ ? 0; .word ; parsing
  : > compiler off 9 , key dup emit n 8 , , ; compile-only
  : < here compiler on ;

lsparrish

chain: stacks'
{{
  variable this
  : stack ( -n ) this @ ;
  ---reveal---
  : :| ( n- ) this ! ;
  : |: ( "- ) create here dup :| , 100 allot ;
  : \ ( n- ) stack ++ stack @ ! ;
  : / ( -n ) stack @ stack -- @ ;
}}

lsparrish

( dict contains link to the most recent char word created. )
( m? is the interrupt detector for the lookup function. )
( l? is the lookup function. returns an xt or 0. )
( : starts a char definition. )
( ; calls a char definition. )

variable dict
: m? dup 0 =if nip -1 ( leave 0 on stack after interrupt ) ;then
  2dup 1+ @ =if nip 2 + -1 ( leave xt on stack after interrupt );then ;
: l? dict repeat @ m? if; again ;

lsparrish

#include <stdio.h>

char* listen();
int process();
int strcmp();
int output();

int main() {
  char *str;
  while (strcmp(str,"bye\n") != 0){

lsparrish

chain: stringBuffer'
{{
  tib variable: buffer
  @buffer variable: pointer
  : terminate ( - ) 0 @pointer ! ;
  : bs? ( c-cf ) dup 8 = ;
  : remove ( c- ) drop pointer -- @pointer @buffer <if @buffer !pointer then terminate ;
  : add ( c- ) @pointer ! pointer ++ terminate ;
---reveal---
  : addToBuffer ( c- ) bs? if remove else add then ;

lsparrish

chain: stringBuffer'
{{
  tib     variable: buffer
  @buffer variable: pointer
  : terminate     (  -  ) 0 @pointer ! ;
---reveal---
  : addToBuffer   ( c-  ) @pointer ! pointer ++ terminate ;
  : getFromBuffer (  -c ) pointer -- @pointer @ terminate ;
  : endOfBuffer   (  -a ) repeat @pointer dup @ 0; 2drop pointer ++ again ;
  : sizeOfBuffer  (  -n ) @pointer @buffer - ;

lsparrish

with quotes'

( compare two strings from the beginning and return how many )
( similar characters there are before the strings diverge. )
: ^match ( $$-n )
  0 -rot repeat @+ [ swap @+ ] dip =if rot 1+ -rot else 2drop ;then again ;

( test each word in the dictionary for similarity. if similar up )
( to the current point, add to the suggestions queue. )
create list here , 100 allot