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Java Enum definition
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It means that the type argument for enum has to derive from an enum which itself has the same type argument. How can this happen? By making the type argument the new type itself. So if I've got an enum called StatusCode, it would be equivalent to:
public class StatusCode extends...
What is the instanceof operator in JavaScript?
... type.
Here are some good examples and here is an example taken directly from Mozilla's developer site:
var color1 = new String("green");
color1 instanceof String; // returns true
var color2 = "coral"; //no type specified
color2 instanceof String; // returns false (color2 is not a String object)
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Get nested JSON object with GSON using retrofit
I'm consuming an API from my android app, and all the JSON responses are like this:
12 Answers
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How to Set AllowOverride all
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How can I override this from a separate file? I can see that there is an IncludeOptional conf-enabled/*.conf at the last line of my apache2.conf file. But it seems that apache2.conf is prioritised instead.
– JohnnyQ
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Why don't C++ compilers define operator== and operator!=?
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That problem doesn't stop it from generating a copy ctor, where it's quite harmful.
– MSalters
Oct 20 '08 at 9:57
81
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How get integer value from a enum in Rails?
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You can get the integer values for an enum from the class the enum is on:
Model.sale_infos # Pluralized version of the enum attribute name
That returns a hash like:
{ "plan_1" => 1, "plan_2" => 2 ... }
You can then use the sale_info value from an instance ...
Why CancellationToken is separate from CancellationTokenSource?
...e accepted answer got the rationale exactly right. Here's the confirmation from the team who designed this feature (emphasis mine):
Two new types form the basis of the framework: A CancellationToken is
a struct that represents a ‘potential request for cancellation’. This
struct is passed...
Create a new object from type parameter in generic class
...cs to tighten up the types:
class TestBase {
hi() {
alert('Hi from base');
}
}
class TestSub extends TestBase {
hi() {
alert('Hi from sub');
}
}
class TestTwo<T extends TestBase> {
constructor(private testType: new () => T) {
}
getNew() : T {
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How do you get a timestamp in JavaScript?
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Another notable exception is node.js. I came here from Google looking to do the same in node
– Milan Babuškov
Jan 16 '15 at 17:33
59
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What is the correct way to document a **kwargs parameter?
...tion, it seems like it might be easier to roll your own parameters section from the outset (as per some of the other answers), but as a proof of concept this is one way to achieve a nice look for supplementary **kwargs if you're already using Sphinx.
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