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Pure virtual destructor in C++
... {
public:
virtual ~A() = 0;
};
inline A::~A() { }
should suffice.
And since this got a down vote, I should clarify: If you derive anything from A and then try to delete or destroy it, A's destructor will eventually be called. Since it is pure and doesn't have an implementation, undefined be...
git add all except ignoring files in .gitignore file
...e changes by typing git status
The . in bash usually means this directory and all other directories recursively, so if you do this from the bottom level of your repo, you should add all of the files.
My usual git flow is to create the .gitignore file and add the project files to the repo. I'll tes...
iOS application: how to clear notifications?
...onBadgeNumber: 0]; to clear said notifications. It might seem a bit weird, and Apple might provide a more intuitive way to do this in the future, but for the time being it's the official way.
Myself, I use this snippet:
[[UIApplication sharedApplication] setApplicationIconBadgeNumber: 0];
[[UIAppl...
Get element inside element by class and ID - JavaScript
...
Might be good to edit this answer and change .innerHtml to .textContent for the security benefit of copy/paste coders.
– codescribblr
Sep 24 '18 at 18:00
...
Which commit has this blob?
...oth of the following scripts take the blob’s SHA1 as the first argument, and after it, optionally, any arguments that git log will understand. E.g. --all to search in all branches instead of just the current one, or -g to search in the reflog, or whatever else you fancy.
Here it is as a shell scr...
C++ catch blocks - catch exception by value or reference? [duplicate]
...
The standard practice for exceptions in C++ is ...
Throw by value, catch by reference
Catching by value is problematic in the face of inheritance hierarchies. Suppose for your example that there is another type MyException w...
jQuery get value of select onChange
...hat I could get the value of a select input by doing this $(this).val(); and applying the onchange parameter to the select field.
...
How do I truncate a .NET string?
...length is not longer than a given value. I am writing to a database table and want to ensure that the values I write meet the constraint of the column's datatype.
...
Powershell v3 Invoke-WebRequest HTTPS error
Using Powershell v3's Invoke-WebRequest and Invoke-RestMethod I have succesfully used the POST method to post a json file to a https website.
...
How to correctly use “section” tag in HTML5?
I'm trying to build a layout in HTML5 and after reading several different articles I'm just confused. I'm trying to get some input on how it should be used.
...