terrible programmers: my god, it's full of chars

The Something Awful Forums > Discussion > Serious Hardware/Software Crap > YOSPOS > terrible programmers: my god, it's full of chars

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Jerry Bindle: May 16, 2003

the comma operator has legit uses, like in "Practical UML Statecharts in C/C++" (pg 638) by Miro Samek, its used in a transition macro to perform an assignment and return a code

code:

#define Q_TRAN(target_) (((QFsm *) me)-> state = (QStateHandler) (target_), Q_RET_TRAN)

# ? Apr 5, 2015 22:56

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# ? May 13, 2024 19:41

eschaton: Mar 7, 2007; Don't you just hate when you wind up in a store with people who are in a socioeconomic class that is pretty obviously about two levels lower than your own?

Symbolic Butt posted:

anyway serious question: what's the deal with the comma operator in C?

I mean what the gently caress

it's an infix form of PROGN, obviously

# ? Apr 6, 2015 01:49

bucketmouse: Aug 16, 2004; we con-trol the ho-ri-zon-tal
we con-trol the verrr-ti-cal

the comma operator is for when you want to save 5 seconds and remove a bunch of readability/maintainability, and/or ioccc

# ? Apr 6, 2015 01:54

eschaton: Mar 7, 2007; Don't you just hate when you wind up in a store with people who are in a socioeconomic class that is pretty obviously about two levels lower than your own?

Shinku ABOOKEN posted:

why does OpenCV has its own String implementation???

is this standard practice for c++ projects?

part of doing a project in c++ is assuming you can do everything more efficiently than whatever libraries or frameworks you could have used, and then extending that assumption to the c++ stdlib too

also it's possible OpenCV dates from an era before std::string was supported by all the compilers it would likely be used with, though Wikipedia says 1999-2000 and that's definitely beyond when I'd expect such bullshit. unless it had to work with VC++ 4 or GCC 2.7 or something equally terrible.

I bet it had to work with VC++ 4 or GCC 2.7 or something.

# ? Apr 6, 2015 02:01

b0lt: Apr 29, 2005

eschaton posted:

part of doing a project in c++ is assuming you can do everything more efficiently than whatever libraries or frameworks you could have used, and then extending that assumption to the c++ stdlib too

also it's possible OpenCV dates from an era before std::string was supported by all the compilers it would likely be used with, though Wikipedia says 1999-2000 and that's definitely beyond when I'd expect such bullshit. unless it had to work with VC++ 4 or GCC 2.7 or something equally terrible.

I bet it had to work with VC++ 4 or GCC 2.7 or something.

the specification for std::string allows optimizations which may or may not be implemented by the implementation of std::string you're using. (libstdc++ (the one that comes with gcc) does copy on write strings (until c++11 banned it), for example, which i don't think anyone else does). if you know your program is going to be using a bunch of short strings, it might be better to use a hand rolled implementation that has a guarantee of the short string optimization; if you know you have giant read only strings, cow is better

# ? Apr 6, 2015 02:08

Symbolic Butt: Mar 22, 2009; (_!_); Buglord

rjmccall posted:

terms and notations in algebra are universal and well-established as long as you carefully only read one textbook. good luck finding a wikipedia page about an algebraic structure that doesn't have a paragraph talking about how different authors use the term for slightly different things

i mean, you're right, + is usually commutative, but appealing to the notational consistency of algebraists of all people is still pretty funny

this is why I'm being precious about it, because it's one of the few conventions that are universally consistent in a world of inconsistent poo poo. dudes can't be bothered to check nlab or something

# ? Apr 6, 2015 02:55

triple sulk: Sep 17, 2014

rust is now in 1.0 beta and i still can't be arsed to care

# ? Apr 6, 2015 02:56

tef: May 30, 2004; -> some l-system crap ->

triple sulk posted:

rust is now in 1.0 beta and i still can't be arsed to care

rust's target audience is programmers who want to write safe code

# ? Apr 6, 2015 03:39

fart simpson: Jul 2, 2005; DEATH TO AMERICA

triple sulk posted:

rust is now in 1.0 beta and i still can't be arsed to care

i downloaded it and im trying it out

# ? Apr 6, 2015 03:47

pseudorandom name: May 6, 2007

Shinku ABOOKEN posted:

why does OpenCV has its own String implementation???

is this standard practice for c++ projects?

yes, to the point that std::string_view was introduced specifically because nobody wants std::string semantics and everybody implements their own string type

# ? Apr 6, 2015 04:29

FamDav: Mar 29, 2008

tef posted:

rust's target audience is programmers who want to write safe code

shots fired

# ? Apr 6, 2015 04:55

Stringent: Dec 22, 2004; image text goes here

the safest code is the code that never gets written

# ? Apr 6, 2015 05:55

fart simpson: Jul 2, 2005; DEATH TO AMERICA

rust seems pretty fun so far. i've never learned c or c++ or anything with manual memory management beyond making a few leds blink on an arduino

# ? Apr 6, 2015 06:50

fart simpson: Jul 2, 2005; DEATH TO AMERICA

i like the immutability by default thing

# ? Apr 6, 2015 11:23

Deacon of Delicious: Aug 20, 2007; I bet the twist ending is Dracula's dick-babies

Stringent posted:

the safest code is the code that never gets written

I'm not slacking, i'm just really really security conscious

# ? Apr 6, 2015 12:46

fritz: Jul 26, 2003

Symbolic Butt posted:

this is why I'm being precious about it, because it's one of the few conventions that are universally consistent in a world of inconsistent poo poo. dudes can't be bothered to check nlab or something

some languages do "." for string concat and i guess that sort of looks like a \cdot but then you'd have all sorts of people getting all fussy about how its too confusing because it looks like the member selection operator

# ? Apr 6, 2015 13:40

Forums Terrorist: Dec 8, 2011

StringBuilder concat = new StringBuilder();
String foo = "dick";
String bar = "butt";

System.out.println(concat.Concatenate(foo, bar));

# ? Apr 6, 2015 13:43

Soricidus: Oct 21, 2010; freedom-hating statist shill

Symbolic Butt posted:

this is why I'm being precious about it, because it's one of the few conventions that are universally consistent in a world of inconsistent poo poo. dudes can't be bothered to check nlab or something

"why are programming language designers ignoring this convention that has developed in a non-programming-related field?"

next up itt, linguists complain about the abuse of the word "object" for the subject of a sentence, and then i think we have hp hovercraft scheduled for another slot later this week on the subject of "software engineering"

# ? Apr 6, 2015 14:05

oh no blimp issue: Feb 23, 2011

Forums Terrorist posted:

StringBuilder concat = new StringBuilder();
String foo = "dick";
String bar = "butt";

System.out.println(concat.Concatenate(foo, bar));

much better

# ? Apr 6, 2015 14:07

Shaggar: Apr 26, 2006

fritz posted:

some languages do "." for string concat and i guess that sort of looks like a \cdot but then you'd have all sorts of people getting all fussy about how its too confusing because it looks like the member selection operator

strings have members so that wont work

# ? Apr 6, 2015 15:18

Symbolic Butt: Mar 22, 2009; (_!_); Buglord

Soricidus posted:

"why are programming language designers ignoring this convention that has developed in a non-programming-related field?"

next up itt, linguists complain about the abuse of the word "object" for the subject of a sentence, and then i think we have hp hovercraft scheduled for another slot later this week on the subject of "software engineering"

linguists have the right to express their feelings too even if they're actually sounding like asshats like I am because yospos birch

# ? Apr 6, 2015 15:55

CPColin: Sep 9, 2003; Big ol' smile.

*does a search in Eclipse*
*minimizes and restores the window, turning the whole thing gray while it hangs*
*goes home early*

# ? Apr 6, 2015 17:16

FamDav: Mar 29, 2008

eclipse seems really great if you have a 32gb of ram and an ssd.

# ? Apr 6, 2015 17:46

Soricidus: Oct 21, 2010; freedom-hating statist shill

FamDav posted:

eclipse seems really great if you have a 32gb of ram and an ssd.

ttgacs

# ? Apr 6, 2015 17:52

Subjunctive: Sep 12, 2006; ✨sparkle and shine✨

FamDav posted:

eclipse seems really great if you have a 32gb of ram and an ssd.

nope

# ? Apr 6, 2015 17:54

Valeyard: Mar 30, 2012; Grimey Drawer

eclipse is good

# ? Apr 6, 2015 18:00

leftist heap: Feb 28, 2013; Fun Shoe

eclipse is fine but definitely needs some janitoring.

# ? Apr 6, 2015 18:04

fritz: Jul 26, 2003

Soricidus posted:

ttgacs

tttaam

# ? Apr 6, 2015 18:04

DimpledChad: May 14, 2002; Rigging elections since '87.

Valeyard posted:

intellij is good

# ? Apr 6, 2015 18:08

Shaggar: Apr 26, 2006

intellij is trash

# ? Apr 6, 2015 18:09

Bloody: Mar 3, 2013

java's greatest weakness is the lack of a usable ide.

# ? Apr 6, 2015 18:11

Valeyard: Mar 30, 2012; Grimey Drawer

DimpledChad posted:

the problem with intellij is that everyone else will be using eclipse, and then you run into all these problems anda re like "haha guess nobody can help since everyone else is using eclipse and NOT intellij :grin:

# ? Apr 6, 2015 18:15

Janitor Prime: Jan 22, 2004; PC LOAD LETTER

What da fuck does that mean; Fun Shoe

Shaggar posted:

intellij is trash

Nah it's much better than eclipse, I tried it out Eclipse for a month and had way too many of those gray screen freezes. If you're build is IDE agnostic then I don't know what to tell you :shrug:

# ? Apr 6, 2015 18:19

ryde: Sep 9, 2011; God I love young girls

Just moved from Eclipse to IntelliJ. Much better performance all-around.

# ? Apr 6, 2015 18:52

Shaggar: Apr 26, 2006

intellij was slow and the layout was crap and the plugins sucked compared to eclipse.

# ? Apr 6, 2015 18:55

ryde: Sep 9, 2011; God I love young girls

Not sure what I can say to that Shaggar. Its definitely more performant than eclipse and very needs-suiting.

# ? Apr 6, 2015 19:02

brap: Aug 23, 2004; Grimey Drawer

Forums Terrorist posted:

StringBuilder concat = new StringBuilder();
String foo = "dick";
String bar = "butt";

System.out.println(concat.Concatenate(foo, bar));

someone put this man out of his misery
also dont use a loving stringbuilder unless you're concatenating dozens or hundreds of strings
the compiler is not stupid and it will generally turn "foo" + "bar" + "baz" into some strcpy call more efficient than instantiating a stringbuilder, etc.

# ? Apr 6, 2015 19:18

gonadic io: Feb 16, 2011; >>=

fleshweasel posted:

also dont use a loving stringbuilder unless you're concatenating dozens or hundreds of strings AT RUN TIME

# ? Apr 6, 2015 19:23

Symbolic Butt: Mar 22, 2009; (_!_); Buglord

fleshweasel posted:

someone put this man out of his misery
also dont use a loving stringbuilder unless you're concatenating dozens or hundreds of strings
the compiler is not stupid and it will generally turn "foo" + "bar" + "baz" into some strcpy call more efficient than instantiating a stringbuilder, etc.

huh I always thought javac was actually super dumb and very literal with my dumb code (at least compared with gcc)

# ? Apr 6, 2015 19:34

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# ? May 13, 2024 19:41

Subjunctive: Sep 12, 2006; ✨sparkle and shine✨

Symbolic Butt posted:

huh I always thought javac was actually super dumb and very literal with my dumb code (at least compared with gcc)

javac is pretty literal ( :rimshot:

) but the VM and JIT do much more advanced optimizations. for "foo" + bar + "baz" I expect that it allocates a String with length of bar.length + 6 and copies right into that new String's buffer, as an example.

# ? Apr 6, 2015 19:41

The Something Awful Forums > Discussion > Serious Hardware/Software Crap > YOSPOS > terrible programmers: my god, it's full of chars

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