Programmer Humor
Welcome to Programmer Humor!
This is a place where you can post jokes, memes, humor, etc. related to programming!
For sharing awful code theres also Programming Horror.
Rules
- Keep content in english
- No advertisements
- Posts must be related to programming or programmer topics
Simple. \n when you just want a newline.
println when you need to flush at the moment.
Useful in case you are printing a debug output right before some function that might do bed stuff to buffers.
I only program in C. I was under the assumption that \n also flushes
I am very sorry to remind everyone about the existence of Visual Basic, but it has:
- VbCrLf
- VbNewLine
- ControlChars.CrLf
- ControlChars.NewLine
- Environment.NewLine
- Chr(13) & Chr(10)
And I know what you're asking: Yes, of course all of them have subtly different behavior, and some of them only work in VB.NET and not in classic VB or VBA.
The only thing you can rely on is that "\r\n" doesn't work.
No debate, std::endl can be a disaster on some platforms due to flushing crap all the time.
It's a very C++ thing that the language developers saw the clusterfuck that is stream flushing on the kernel and decided that the right course of action was to create another fucking layer of hidden inconsistent flushing.
I hear C++ was greatly inspired by the fifth circle of hell.
Just because the box says something is flushable doesn't mean you should flush it.
printf is superior and more concise, and snprintf is practically the only C string manipulation function that is not painful to use.
Try to print a 32-bit unsigned int as hexadecimal number of exactly 8 digits, using cout. You can do std::hex and std::setw(8) and std::setfill('0') and don't forget to use std::dec afterwards, or you can just, you know, printf("%08x") like a sane person.
Just don't forget to use -Werror=format but that is the default option on many compilers today.
C++23 now includes std::print which is exactly like printf but better, so the whole argument is over.
std::cout << "\nwhy not both" << std::endl;
I prefer \n for 0.001% better performance
I prefer \n for less typing.
Maybe c# has similar. There's \r\n or \n like c++ and Environment.NewLine.
Probably it's similar in that Environment.NewLine takes into account the operating system in use and I wonder if endl in c++ does the same thing?
C# also has verbatim strings, in which you can just put a literal newline.
string foo = @"This string
has a line break!";
In PHP it exists as well. I try to use PHP_EOL but when I'm lazy I simply do "\n".
For me the answer is “Building backend applications with it instead of CLI applications, like Lerdorf intended.”
But also "\n" because it's easier and PHP_EOL is just an alias for "\n"; it's not even platform-dependent.
PHP_EOL depends on your host system, it's \r\n on Windows.
I don't really want to use what Lerdorf intended, PHP <= 4 was horrible, 5.x was mainly getting slowly rid of nonsense and with 7.x PHP started its slow path of redemption and entered its modern era.
While Lerdorf's vision was great at that time for its intended use case, I wouldn't want to build anything serious in it.
It actually outputs "\n" on a Windows system, but modern Windows to recognise that as enough of a newline, nowadays.
I don't really want to use what Lerdorf intended, PHP <= 4 was horrible
Actually a great point!
Just puts(“I’m a teapot”); :)
Wasn't this {fmt} library merged into STL now? Does this solve this issue?
Anyways, there was also a constant that is the OS line ending without a flush, right?
If endl is a function call and/or macro that magically knows the right line ending for whatever ultimately stores or reads the output stream, then, ugly though it is, endl is the right thing to use.
If a language or compiler automatically "do(es) the right thing" with \n as well, then check your local style guide. Is this your code? Do what you will. Is this for your company? Better to check what's acceptable.
If you want to guarantee a Unix line ending use \012 instead. Or \cJ if your language is sufficiently warped.
It's a "stream manipulator" function that not only generates a new line, it also flushes the stream.
C++ style text streams are bad and a dead-end design and '\n'.
As long as it doesn't end in ;
\n is fun until you’re an a system that needs an additional \r
Unix needed only \n because it had complex drivers that could replace \n with whatever sequence of special characters the printer needed. Also, while carriage return is useful, they saw little use for line feed
On dos (which was intended for less powerful hardware than unix) you had to actually use the correct sequence which often but not always was \r\n (because teleprinters used that and because it's the "most correct" one).
Now that teleprinters don't exist, and complex drivers are not an issue for windows, and everyone prefers to have a single \n, windows still uses \r\n, for backward compatibility.
Bedeviled NXP/ARM SDK stdlib. Hate it, we need \n\r there. Why????!?!?! What a PITA.
Kinda in Java, you can call System.out.println or you can call System.out.print and explicitly write the newline.
I haven't looked at the code but I always assumed that println was a call to print with a new line added to the original input.
Something like this:
void print(String text) { ... }
void println(String text) { this.print(text + '\n'); }
That is pretty much what it does except it doesn't hardcode \n but instead uses the proper line ending for the platform it's running on.
Doesn’t endl predate C++?
It's not in C, if that's what you mean.