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What is the 'override' keyword in C++ used for? [duplicate]
...derived2: public base
{
public:
int foo(int x) override { ... } // ERROR
};
In derived2 the compiler will issue an error for "changing the type". Without override, at most the compiler would give a warning for "you are hiding virtual method by same name".
...
How to delete a workspace in Perforce (using p4v)?
...Workspace". If the workspace is "locked" to prevent changes, you'll get an error message.
To unlock the workspace, click "Edit" (or right-click and click "Edit Workspace") to pull up the workspace editor, uncheck the "locked" checkbox, and save your changes. You can delete the workspace once it's u...
Scraping html tables into R data frames using the XML package
...<- textConnection(webpage)); close(tc)
# Parse the html tree, ignoring errors on the page
pagetree <- htmlTreeParse(webpage, error=function(...){})
# Navigate your way through the tree. It may be possible to do this more efficiently using getNodeSet
body <- pagetree$children$html$children...
Avoiding “resource is out of sync with the filesystem”
...
Just right click on the file or on the project and click Refresh. The error will vanish. I also faced the same issue and it worked for me.
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How to completely remove node.js from Windows
...ind during the uninstall process, and it's causing me to have all sorts of errors when trying to add modules through npm. I've seen solutions to this for OSX and Linux, but couldn't find anything for Windows. I'm running Windows 7 64-bit.
...
ALTER TABLE to add a composite primary key
...rimary key is being used as a foreign key by another table you will get an error when trying to drop it. In some versions of mysql the error message there was malformed (as of 5.5.17, this error message is still
alter table parent drop column id;
ERROR 1025 (HY000): Error on rename of
'./test/#sq...
Parsing huge logfiles in Node.js - read in line-by-line
...e readstream, possibly from a callback
s.resume();
})
.on('error', function(err){
console.log('Error while reading file.', err);
})
.on('end', function(){
console.log('Read entire file.')
})
);
Please let me know how it goes!
...
Where and why do I have to put the “template” and “typename” keywords?
...en an instantiation is needed, they parse the template and possibly detect errors in the definition. But instead of bothering the template's users (poor colleagues!) with errors made by a template's author, other implementations choose to check templates early on and give errors in the definition as...
Get path of executable
...ORD result = GetModuleFileNameA(nullptr, &buf[0], size);
DWORD lastError = GetLastError();
if (result == 0)
{
shouldContinue = false;
}
else if (result < size)
{
havePath = true;
shouldContinue = false;
}
else if (
result == size
&...
Rails hidden field undefined method 'merge' error
...flow.com%2fquestions%2f6636875%2frails-hidden-field-undefined-method-merge-error%23new-answer', 'question_page');
}
);
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