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A comment on Current hardware trends make C++ exceptions harder to justify. Parent comment

Re:Current hardware trends make C++ exceptions harder to jus... by foldr on Tuesday February 22, 2022 @04:20PM (#30433979)
This would mean that attempting to open a file that doesn't exist shouldn't throw an exception. But that is exactly what it does in the standard libraries of many languages with exceptions.
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Re:Current hardware trends make C++ exceptions harder to jus... by spc476 on Tuesday February 22, 2022 @05:53PM (#30435033)
It should be up to the application to throw or not, not a library. I write a system service. If it can't find the configuration file, it can't continue, so it throws an exception. If it can't open a file that contains state from a previous run (maybe because it's the first time it's running) that's fine, the program can run without it and thus, no exception.
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Re:Current hardware trends make C++ exceptions harder to jus... by jcelerier on Tuesday February 22, 2022 @04:42PM (#30434290)
Not in C++ I believe ?
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Re:Current hardware trends make C++ exceptions harder to jus... by TheMonarchist on Tuesday February 22, 2022 @06:23PM (#30435303)
https://en.cppreference.com/w/cpp/io/basic_ios/exceptions
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Re:Current hardware trends make C++ exceptions harder to jus... by YATA0 on Friday February 25, 2022 @01:49AM (#30464346)
That is manually throwing an exception if the file doesn't exist.

C++ stdlib does not throw an exception if a file does not exist. I agree with this philosophy because files not existing isn't an exceptional case.

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Re:Current hardware trends make C++ exceptions harder to jus... by jcelerier on Wednesday February 23, 2022 @03:04AM (#30438789)
Damn, in all those years I've absolutely never come across this, thanks
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Re:Current hardware trends make C++ exceptions harder to jus... by foldr on Tuesday February 22, 2022 @05:22PM (#30434727)
The C++ standard IO library doesn't enable exceptions by default, but IIRC that's just a relic of the fact that it dates back to when C++ didn't have exceptions.
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Re:Current hardware trends make C++ exceptions harder to jus... by mpyne on Tuesday February 22, 2022 @05:23PM (#30434733)
It's library dependent. iostreams (part of C++ std lib) doesn't throw exceptions by default but I believe it can be configured to throw if you want.
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