lazy-initialization Questions
1
Solved
We now have a new way to make a lazy variable. It is described in swift-evolution/proposals/0258-property-wrappers.md:
@propertyWrapper
enum Lazy<Value> {
case uninitialized(() -> Value)...
Deponent asked 29/10, 2019 at 6:54
4
Solved
I'm using Hibernate 5.1.0.Final with ehcache and Spring 3.2.11.RELEASE. I have the following @Cacheable annotation set up in one of my DAOs:
@Override
@Cacheable(value = "main")
public Item findIt...
Bromal asked 14/3, 2016 at 20:35
4
Solved
I want to use Lazy initialization for some of my properties in Swift.
My current code looks like this:
lazy var fontSize : CGFloat = {
if (someCase) {
return CGFloat(30)
} else {
return CGFloa...
Accomplice asked 11/1, 2015 at 10:24
3
Solved
I've got a C++ member function of a class with a const and non-const overloading.
Class Example {
public:
int const & Access() const;
int & Access();
[...]
};
I wish for the const ve...
Conductivity asked 19/8, 2019 at 22:57
3
Solved
I don't want to initialize a view controller until I need to display its view., so I have it in a lazy var like:
lazy var foo: NSViewController! = {
let foo = NSViewController()
foo.representedO...
Bettinabettine asked 28/11, 2016 at 15:39
2
Solved
Something I still not quite understand about Swift ... let's say I want a property that instantiates a class in a base class used for several sub classes, e.g. ...
let horse = Horse();
Is horse ...
Apotheosize asked 13/6, 2015 at 5:34
2
Solved
It appears the Java Memory Model does not define "refreshing" and "flushing" of the local cache, instead people only call it that way for simplicity, but actually the "happens-before" relationship ...
Bankable asked 8/1, 2019 at 21:20
1
In kotlin we can use both of these approach lazy{} and getter()
lazy initializaiton:
internal val connector by lazy {
serviceConnector
}
getter():
internal val connector : ServiceConnector
...
Smoke asked 17/3, 2019 at 19:19
4
Are lazy vars in Swift computed more than once? I was under the impression that they replaced the:
if (instanceVariable) {
return instanceVariable;
}
// set up variable that has not been initial...
Gourmont asked 19/10, 2014 at 20:2
2
One of the coolest features of the Android data binding support is that it also generates fields for View with IDs set. This tidies up the codebase as no field or findViewById() calls are necessary...
Grania asked 5/3, 2016 at 3:48
5
Solved
I would like to know what is the python way of initializing a class member but only when accessing it, if accessed.
I tried the code below and it is working but is there something simpler than that...
Counterfeit asked 5/3, 2013 at 14:47
3
Solved
I have been wondering how this anomaly should be handled:
DTO's should be converted in the controller, the service layer does not need to know about them.
Transaction boundaries are defined by th...
Dantzler asked 22/3, 2017 at 16:2
1
Solved
I realize that the recommended way of accomplishing Lazy injection with Dagger is to add Lazy to a field injection point. For instance,
class Foo {
@Inject lateinit var bar: Lazy<Bar>
fu...
Reptile asked 1/7, 2018 at 22:48
2
Solved
I am not sure if it is a bug or it is really how things should work?
class A {
init() throws { }
}
class B {
lazy var instance = A()
}
this code compiles without mistakes using XCode 9 and la...
Audet asked 4/6, 2018 at 7:48
9
I am working on a project for a customer who wants to use lazy initialization.
They always get "lazy initialization exception" when mapping classes with the default lazy loading mode.
@JoinTable(n...
Littlejohn asked 23/2, 2009 at 17:4
5
Solved
If a singleton is implemented as follows,
class Singleton {
private static Singleton instance = new Singleton();
public static Singleton getInstance() {
return instance;
}
}
How is this imp...
Propensity asked 17/10, 2011 at 6:39
1
I'm used to Swifts' optional values and see that TypeScript has something similar. For things like lazy initialisation of properties, it would be nice to have a private property that is nullable an...
Vickievicksburg asked 18/12, 2017 at 19:43
2
Solved
I'm working on a project using Hibernate and Jackson to serialize my objects.
I think I understand how it is suposed to work but I can't manage to make it works.
If I understand well, as soon as a...
Professoriate asked 7/6, 2016 at 12:6
1
Solved
I am trying to implement an example in youtube, the tutor got it right but I got an error.
I already have a private constructor and I cannot have public constructor in my code.
private static int...
Principled asked 16/10, 2017 at 5:48
1
Solved
I would to know if it's possible, in my view controller, use a lazy property and in deinit method call a method of my lazy property only if it was initialized. Below some code:
fileprivate lazy va...
Sclerenchyma asked 30/5, 2017 at 10:3
1
Solved
I want to Serialize and DeSerialize an object which contains a Lazy Collection of some custom objects.
Normally everything works perfectly fine but, if namespaces of classes used for serializatio...
Subject asked 24/5, 2017 at 9:35
2
Solved
What is the best way to handle multiple chackboxes when you nead to fill a JPA M:N relation ... for example I have an JPA entity Hardware and the entity Connectivity.
Hardware has a set for conne...
Curb asked 7/5, 2015 at 13:51
1
Solved
I realize that static variables are implicitly lazy, which is really great. Doing the below will not create the instance until it's first called:
static var test = Test()
However, assigning a ne...
Hime asked 12/4, 2017 at 15:35
5
Solved
The Spring MVC application needs to execute an intensive computation job which takes several minutes. The client wants to run this job in asynchronous way. But after I enable the @Async annotation ...
Staggs asked 24/6, 2013 at 14:47
1
Solved
If I put Lazy in constructor of my object, and X is not registered in container I got dependency resolution exception.
Why am I getting this exception? I dislike it, because I cannot choose compon...
Ensor asked 25/1, 2017 at 16:21
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