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... but I already have a date for New Year’s Eve.
It’s December 31st!
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Sandeep Mewara wrote: It’s December 31st!
And just who's new year is that one? Some have it in Autumn; others in the Spring - Chinese New Year teases the end of winter. But just what is Dec 31st->Jan 1st compared to any other monthly transition?
Banking New Year, I suppose.
| Ravings en masse^ |
|---|
| "The difference between genius and stupidity is that genius has its limits." - Albert Einstein | | "If you are searching for perfection in others, then you seek disappointment. If you seek perfection in yourself, then you will find failure." - Balboos HaGadol Mar 2010 |
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Or any week, day, hour ...
It's just another illusion to confuse us poor humans.
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Richard MacCutchan wrote: confuse us poor humans
'confuse'? Perhaps 'distract' fits better.
So, when the waters begin to swirl and you're being pulled under, you didn't see the hand that flushed.
(so much for my morning's good mood)
| Ravings en masse^ |
|---|
| "The difference between genius and stupidity is that genius has its limits." - Albert Einstein | | "If you are searching for perfection in others, then you seek disappointment. If you seek perfection in yourself, then you will find failure." - Balboos HaGadol Mar 2010 |
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Sneaking into abandoned buildings in Russia may be a dumb idea, but it may be worth it when that what the Russians were doing in there is still inside and you get away to post the video. Too bad the other hangar has collapsed and burried the remains of the other one that actually flew.
Playing Fallout in Russia[^]
I have lived with several Zen masters - all of them were cats.
His last invention was an evil Lasagna. It didn't kill anyone, and it actually tasted pretty good.
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Interesting. Nice paintjob on the building interior! 
Get me coffee and no one gets hurt!
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Forgive me Father.
"In testa che avete, Signor di Ceprano?"
-- Rigoletto
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Tell me everything. Father Senilius does not forgive as easily as I do. 
I have lived with several Zen masters - all of them were cats.
His last invention was an evil Lasagna. It didn't kill anyone, and it actually tasted pretty good.
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It was either me or him.
"In testa che avete, Signor di Ceprano?"
-- Rigoletto
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tan his hide!
"I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
"Common sense is so rare these days, it should be classified as a super power" - Random T-shirt
AntiTwitter: @DalekDave is now a follower!
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I removed the line and column counting from my JSON processor because I would have had to sacrifice a massive optimization to keep it.
Even though I used this information to debug my parser... 
I thought I would be okay because the only code I had left to add was already tested and running in my older codebase.
I copied and pasted it. It no longer works.
I'm up a creek! *headdesk*
Real programmers use butterflies
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There are worse endeavors.
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Daaaaaaaamn 
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Edit: I figured it out. duh. and it's really too bad because only counting { and } is much faster.
Hey, you're a thinker. Riddle me this:
I want to scan JSON documents quickly, so I have a special function that works like string.IndexOfAny() does in .NET except at gigabyte/s speeds on modern machines.
I am looking for the end of the current object.
I stop at [ or { and increment a depth count.
I stop at ] or } and decrement a depth count.
Once depth hits zero I break.
Depth starts at zero so if there's no [ or { it will break at the next }
Why do I have to stop at [ and ] and count depths? Why can't I just count { and } since it's twice as fast?
For example
{
"foo": "bar",
"baz": [ { "a": 1 } ]
}
if i start in the inner most object i want to stop at the nearest end curly brace. If i start in the outermost object i want to stop at the final curly brace.
If I stop and count [ ] and it works. If I only count { } it doesn't. Why?
Real programmers use butterflies
modified 29-Dec-20 0:37am.
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honey the codewitch wrote: I'm up a creek! *headdesk*
It seems, from your last post in the thread (at this time) you have solved it. Solutions not withstanding, I can give you a tip on some efficiency enhancements. We'll start with this one:
This does help solve some problems, but it can take quite a bit of bang and make noise that may disturb others. Now padding won't help because, although it muffles the noise it it defeats the purpose. A viable solution is to use the corner of the room (you're already there from the subject line) - thereby having the ability to impact both surfaces simultaneously and cut "runtime" in half! Moreover, if the impact is just slightly non-concurrent, those who are listening get the vague impression of being in a large chapel!
And a happy new year to you !
Now, much as the temptation may spring up, I do not recommend practice. Aside from the other obvious inconveniences, you made to repaint the wall in the corner, as well.
| Ravings en masse^ |
|---|
| "The difference between genius and stupidity is that genius has its limits." - Albert Einstein | | "If you are searching for perfection in others, then you seek disappointment. If you seek perfection in yourself, then you will find failure." - Balboos HaGadol Mar 2010 |
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Have you tried adding curly braces? 
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No, because I need GB/s throughput. 
Can't afford curly braces slowing me down.
Real programmers use butterflies
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Been porting some JPL/Nasa C code to C#. Code is generally nice; originally ported from FORTRAN; what you might expect under the circumstances.
Then there was the latest "high precision" upgrade that required passing 2 extra doubles.
This "guy" creates a 4 element array and at various times passes the address of [0], then [2]; then in the called routines, works with 2 elements; in the calling with all 4; just to implement a double-double precision number.
You can't even do that in C#: pass a reference to the "middle" of an array.
Why would any "pro" dream up something like that?
(It was completely contrary to all the other code "patterns").
It was only in wine that he laid down no limit for himself, but he did not allow himself to be confused by it.
― Confucian Analects: Rules of Confucius about his food
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It has happened to me, and I've seen it happen to more programmers than I can count.
Besides, that code may be ugly, but it's not this:
static bool lexNumber(lex::LexSource& ls,JsonLexState& st) {
int32_t cp;
if(!ls.ensureStarted())
return false;
switch(st.flags.state) {
case 0:
st.flags.accept=0;
st.flags.eCount=0;
st.flags.fracCount=0;
st.flags.fracPart=0;
st.flags.negative=0;
st.flags.overflow=0;
st.integer = 0;
st.real = 0;
if(ls.more()) {
if (((cp=ls.current()) == '-')) {
if(!ls.capture(cp)) {
return false;
}
st.flags.negative =1;
if(!ls.advance()) {
if(ls.hasError())
return false;
}
st.flags.state = 1;
return true;
}
if ((cp == '0')) {
if(!ls.capture(cp)) {
return false;
}
if(!ls.advance()) {
if(ls.hasError())
return false;
}
st.flags.state = 2;
return true;
}
if (((cp >= '1')
&& (cp <= '9'))) {
if(!ls.capture(cp)) {
return false;
}
cp-='0';
st.integer=cp;
st.real = cp;
if(!ls.advance()) {
if(ls.hasError())
return false;
}
st.flags.state = 8;
return true;
}
}
goto error;
case 1:
if(ls.more()) {
if (((cp=ls.current()) == '0')) {
if(!ls.capture(cp)) {
return false;
}
cp-='0';
if(0!=st.flags.negative)
cp=-cp;
st.real=cp;
st.integer=cp;
if(!ls.advance()) {
if(ls.hasError())
return false;
}
st.flags.state = 2;
return true;
}
if (((cp >= '1')
&& (cp <= '9'))) {
if(!ls.capture(cp)) {
return false;
}
cp-='0';
if(0!=st.flags.negative)
cp=-cp;
st.real=cp;
st.integer=cp;
if(!ls.advance()) {
if(ls.hasError())
return false;
}
st.flags.state = 8;
return true;
}
}
goto error;
case 2:
if(ls.more()) {
if ((((cp=ls.current())== 'E')
|| (cp == 'e'))) {
if(!ls.capture(cp)) {
return false;
}
st.flags.fracPart = 2;
if(!ls.advance()) {
if(ls.hasError())
return false;
}
st.flags.state = 5;
return true;
}
if ((cp == '.')) {
if(!ls.capture(cp)) {
return false;
}
++st.flags.fracCount;
st.flags.fracPart=1;
if(!ls.advance()) {
if(ls.hasError())
return false;
}
st.flags.state = 3;
return true;
}
}
st.flags.accept=1;
return false;
case 3:
if(ls.more()) {
if ((((cp=ls.current()) >= '0')
&& (cp <= '9'))) {
if(!ls.capture(cp)) {
return false;
}
if(st.flags.fracCount<63) {
cp-='0';
if(0!=st.flags.negative)
cp=-cp;
st.real+=(cp*(pow(10,-st.flags.fracCount)));
++st.flags.fracCount;
}
if(!ls.advance()) {
if(ls.hasError())
return false;
}
st.flags.state = 4;
return true;
}
}
goto error;
case 4:
if(ls.more()) {
if ((((cp=ls.current())== 'E')
|| (cp == 'e'))) {
if(!ls.capture(cp)) {
return false;
}
if(!ls.advance()) {
if(ls.hasError())
return false;
}
st.flags.state = 5;
return true;
}
if (((cp >= '0')
&& (cp <= '9'))) {
if(!ls.capture(cp)) {
return false;
}
if(st.flags.fracCount<63) {
cp-='0';
if(0!=st.flags.negative)
cp=-cp;
st.real+=(cp*(pow(10,-st.flags.fracCount)));
++st.flags.fracCount;
}
if(!ls.advance()) {
if(ls.hasError())
return false;
}
st.flags.state = 4;
return true;
}
}
st.flags.accept=2;
return false; case 5:
if(ls.more()) {
if ((((cp=ls.current()) == '+')
|| (cp == '-'))) {
if('-'==cp)
st.flags.fracPart = 3; if(!ls.capture(cp)) {
return false;
}
if(!ls.advance()) {
if(ls.hasError())
return false;
}
st.flags.state = 6;
return true;
}
if (((cp >= '0')
&& (cp <= '9'))) {
if(!ls.capture(cp)) {
return false;
}
cp-='0';
if(st.flags.eCount>6553) {
st.flags.overflow = 1;
}
st.flags.eCount=st.flags.eCount*10+cp;
if(!ls.advance()) {
if(ls.hasError())
return false;
}
st.flags.state = 7;
return true;
}
}
goto error;
case 6:
if(ls.more()) {
if ((((cp=ls.current()) >= '0')
&& (cp <= '9'))) {
if(!ls.capture(cp)) {
return false;
}
cp-='0';
if(st.flags.eCount>6553) {
st.flags.overflow = 1;
}
st.flags.eCount=st.flags.eCount*10+cp;
if(!ls.advance()) {
if(ls.hasError())
return false;
}
st.flags.state = 7;
return true;
}
}
goto error;
case 7:
if(ls.more()) {
if ((((cp=ls.current()) >= '0')
&& (cp <= '9'))) {
if(!ls.capture(cp)) {
return false;
}
cp-='0';
if(st.flags.eCount>6553) {
st.flags.overflow = 1;
}
st.flags.eCount=st.flags.eCount*10+cp;
if(!ls.advance()) {
if(ls.hasError())
return false;
}
st.flags.state = 7;
return true;
}
}
st.flags.accept=2;
return false; case 8:
if(ls.more()) {
if ((((cp=ls.current())== 'E')
|| (cp == 'e'))) {
if(!ls.capture(cp)) {
return false;
}
st.flags.fracPart = 2;
if(!ls.advance()) {
if(ls.hasError())
return false;
}
st.flags.state = 5;
return true;
}
if (((cp >= '0')
&& (cp <= '9'))) {
if(!ls.capture(cp)) {
return false;
}
cp=cp-'0';
if(st.flags.negative)
cp=-cp;
st.integer=st.integer*10+cp;
if((0>st.integer && 0==st.flags.negative)||(0<st.integer && 0!=st.flags.negative)) {
st.flags.overflow = 1;
}
st.real = floor(st.real*10.0+0.5)+cp;
if(!ls.advance()) {
if(ls.hasError())
return false;
}
st.flags.state = 8;
return true;
}
if ((cp == '.')) {
if(!ls.capture(cp)) {
return false;
}
++st.flags.fracCount;
st.flags.fracPart=1;
if(!ls.advance()) {
if(ls.hasError())
return false;
}
st.flags.state = 3;
return true;
}
}
st.flags.accept =1;
return false;
}
error:
ls.capture(ls.current());
return false;
}
That's a DFA generated from a regular expression into a C# state machine, I then ported to C++ and added numeric computations in the middle of it.
It's because strtod() doesn't stream and neither does atoll() or atoi() - you have to have the entire string loaded before you can parse, and my DFA above supports infinite precision in lexical space but imposes limits in value space, so that you can round trip numbers of any precision.
I can defend the code based on it originating from machine generated source, for which I have a graphical flow chart also that goes with this routine.
It's less buggy than writing it all by hand, despite how ugly it is.
So sometimes there's a reason for nasty code. Maybe there was a reason.
Real programmers use butterflies
modified 28-Dec-20 13:26pm.
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Reminds me of looking at core dumps. But at least one can generate different core dumps. (Progress).
It was only in wine that he laid down no limit for himself, but he did not allow himself to be confused by it.
― Confucian Analects: Rules of Confucius about his food
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The real question is why they use doubles instead of decimals. Doing math with doubles is NOT as precise as doing math with decimals.
".45 ACP - because shooting twice is just silly" - JSOP, 2010
-----
You can never have too much ammo - unless you're swimming, or on fire. - JSOP, 2010
-----
When you pry the gun from my cold dead hands, be careful - the barrel will be very hot. - JSOP, 2013
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