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How do function pointers in C work?
...nPtr)(2, 3); // sum == 5
Passing the pointer to another function is basically the same:
int add2to3(int (*functionPtr)(int, int)) {
return (*functionPtr)(2, 3);
}
We can use function pointers in return values as well (try to keep up, it gets messy):
// this is a function called functionFac...
How can I get enum possible values in a MySQL database?
...want to populate my dropdowns with enum possible values from a DB automatically. Is this possible in MySQL?
24 Answers
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Undo git pull, how to bring repos to old state
...and then reset to it.
Warning
The commands listed in this section remove all uncommitted changes, potentially leading to a loss of work:
git reset --hard
Alternatively, reset to a particular point in time, such as:
git reset --hard master@{"10 minutes ago"}
...
How can I disable a button in a jQuery dialog from a function?
...tinue" button. I would like this "continue" button to only be enabled once all the fields have content in them, else it will remain disabled.
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How do I change the root directory of an apache server? [closed]
...s anyone know how to change the document root of the Apache server? I basically want localhost to come from /users/spencer/projects directory instead of /var/www .
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How to resolve git's “not something we can merge” error
...er in git. First, I got the branch name by running git ls-remote . Let's call that branch "branch-name". I then ran git merge branch-name command and got the following result:
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Why do I get “Pickle - EOFError: Ran out of input” reading an empty file?
...
catching an EOF exception won't save you from all the other potential errors.
– Padraic Cunningham
Jul 16 '14 at 23:06
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Git: “Corrupt loose object”
...eone else. Hopefully they will have an uncorrupted version.
You could actually reconstruct it if you can't find a valid version from someone else by guessing at what files should be there. You may want to see if the dates & times of the objects match up to it. Those could be the related blobs. ...
error: use of deleted function
...e X::x is const, it must be initialized -- but a default ctor wouldn't normally initialize it (because it's a POD type). Therefore, to get a default ctor, you need to define one yourself (and it must initialize x). You can get the same kind of situation with a member that's a reference:
class X {
...
How can I make a WPF combo box have the width of its widest element in XAML?
...hidden control (Alan Hunford's answer)
Changing the ControlTemplate drastically. Even in this case, a hidden version of an ItemsPresenter may need to be created.
The reason for this is that the default ComboBox ControlTemplates that I've come across (Aero, Luna, etc.) all nest the ItemsPresenter ...