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How is “=default” different from “{}” for default constructor and destructor?
...ble type. I.e. if you try to destruct a Widget, you'll get a compile-time error. But if you don't, you've got a working program.
Otoh, if you supply the user-provided destructor, then things won't compile whether or not you destruct a Widget:
test.cpp:8:7: error: field of type 'A' has private de...
Excluding directory when creating a .tar.gz file
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I get tar: Error exit delayed from previous errors. in macos
– prayagupd
Jun 28 '18 at 23:32
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Converting a string to JSON object
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This is not working. It is throwing an error "SyntaxError: JSON.parse: unexpected character" . There is nothing wrong with the string as when i get the same string through a ajax request and handle it as "JSON", no problem occurs.
– Zer0
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Using getopts to process long and short command line options
...comes with caveats:
getopts can't enforce the opt spec. It can't return errors if the user supplies an invalid option. You have to do your own error-checking as you parse OPTARG.
OPTARG is used for the long option name, which complicates usage when your long option itself has an argument. You end...
Compare integer in bash, unary operator expected
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quoting variable will rise a new error like integer expression expected
– Néstor
Feb 17 '16 at 1:49
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Invalid date format specification in gemspec
I am getting the following error when I try to use gems in windows, and I also referred to
this stackoverflow post and updated rubygems and rails. But nothing could solve the problem.
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How do I properly force a Git push?
...uestion) tries to address this specific issue. Basically, it will bring an error and not push if the remote was modified since your latest fetch.
This is good if you're really sure a push --force is needed, but still want to prevent more problems. I'd go as far to say it should be the default push -...
How should I have explained the difference between an Interface and an Abstract class?
...tion for defaultMethod() method otherwise compiler will throw compile time error.
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How to implement WiX installer upgrade?
... code to do automatic upgrades. It prevents downgrades, giving a localised error message, and also prevents upgrading an already existing identical version (i.e. only lower versions are upgraded):
<MajorUpgrade
AllowDowngrades="no" DowngradeErrorMessage="!(loc.NewerVersionInstalled)"
All...
How can I get nth element from a list?
...ype is acceptable as idiomatic Haskell. [1,2,3]!!6 will give you a runtime error. It could very easily be avoided if !! had the type [a] -> Int -> Maybe a. The very reason we have Haskell is to avoid such runtime errors!
– worldsayshi
Apr 14 '15 at 21:08
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