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When to use Storyboard and when to use XIBs
...d when to use XIBs? what are the pros and cons of each and what situations do they each suit?
9 Answers
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How do you list the active minor modes in emacs?
How do you list the active minor modes in emacs?
5 Answers
5
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Why use pointers? [closed]
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Why use pointers over normal variables?
Short answer is: Don't. ;-) Pointers are to be used where you can't use anything else. It is either because the lack of appropriate functionality, missing data types or for pure perfomance. More below...
When and where should I use pointers...
When should one use RxJava Observable and when simple Callback on Android?
... @Override
public void call(Photo photo) {
// do some stuff with your photo
}
});
Callback:
api.getUserPhoto(photoId, new Callback<Photo>() {
@Override
public void onSuccess(Photo photo, Response response) {
}
});
The RxJava varia...
The relationship could not be changed because one or more of the foreign-key properties is non-nulla
...ld child items thisParent.ChildItems one by one manually. Entity Framework doesn't do that for you. It finally cannot decide what you want to do with the old child items - if you want to throw them away or if you want to keep and assign them to other parent entities. You must tell Entity Framework y...
Objective-C: Where to remove observer for NSNotification?
...e that depends:
On your use case (Which notifications are observed? When do they get send?)
The implementation of the observer (When is it ready to receive notifications? When is it no longer ready?)
The intended life-time of the observer (Is it tied to some other object, say, a view or view contr...
How do I install package.json dependencies in the current directory using npm
... install all the dependencies in a specific node_modules directory . How do I do this?
3 Answers
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When to use ' (or quote) in Lisp?
...nderstand what the special operator (quote) (or equivalent ' ) function does, yet this has been all over Lisp code that I've seen.
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How do I filter ForeignKey choices in a Django ModelForm?
... the default ModelForm object, form.fields["rate"].queryset = ...
This is done explicitly in the view. No hacking around.
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How do I get PyLint to recognize numpy members?
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If using Visual Studio Code with Don Jayamanne's excellent Python extension, add a user setting to whitelist numpy:
{
// whitelist numpy to remove lint errors
"python.linting.pylintArgs": [
"--extension-pkg-whitelist=numpy"
]
}
...