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What is the difference between Type and Class?
...primitives are classes (or more exactly structs).
– dalle
Jan 22 '09 at 7:10
4
@dalle: agreed, th...
Check if a given key already exists in a dictionary
...
I usually just use get if I'm going to be pulling the item out of the dictionary anyway. No sense in using in and pulling the item out of the dictionary.
– Jason Baker
Oct 21 '09 at 19:12
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Javascript object Vs JSON
...ort these, you should include json2.js.
If you're using jQuery, you can call jQuery.parseJSON(), which will use JSON.parse() under the hood if it's supported and will otherwise fallback to a custom implementation to parse the input.
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setState vs replaceState in React.js
...ows out the current state, and replaces it with only what you provide. Usually setState is used unless you really need to remove keys for some reason; but setting them to false/null is usually a more explicit tactic.
While it's possible it could change; replaceState currently uses the object passe...
RSpec: how to test if a method was called?
...do
expect(subject).to receive(:bar).with("an argument I want")
subject.foo
end
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setMaxResults for Spring-Data-JPA annotation?
...t; {
@Query("from User u where ...")
List<User> findAllUsersWhereFoo(@Param("foo") Foo foo, Pageable pageable);
default List<User> findTop10UsersWhereFoo(Foo foo) {
return findAllUsersWhereFoo(foo, new PageRequest(0,10));
}
}
...
What's the difference between belongs_to and has_one?
...
They essentially do the same thing, the only difference is what side of the relationship you are on. If a User has a Profile, then in the User class you'd have has_one :profile and in the Profile class you'd have belongs_to :user. To det...
How to reference constants in EL?
...Handler#importClass() and be available as ${YourConstants.FOO}.
Note that all java.lang.* classes are already implicitly imported and available like so ${Boolean.TRUE} and ${Integer.MAX_VALUE}. This only requires a more recent Java EE 7 container server as early versions had bugs in this. E.g. Glas...
How to fallback to local stylesheet (not script) if CDN fails
I am linking to the jQuery Mobile stylesheet on a CDN and would like to fall back to my local version of the stylesheet if the CDN fails. For scripts the solution is well known:
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What's the difference between equal?, eql?, ===, and ==?
...nd the difference between these four methods. I know by default that == calls the method equal? which returns true when both operands refer to exactly the same object.
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