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Create an enum with string values
...llo" | "world";
var foo: Options;
foo = "hello"; // Okay
foo = "asdf"; // Error!
More : https://www.typescriptlang.org/docs/handbook/advanced-types.html#string-literal-types
Legacy Support
Enums in TypeScript are number based.
You can use a class with static members though:
class E
{
st...
How to link to apps on the app store
...wController.loadProduct(withParameters: parameters) { [weak self] (loaded, error) -> Void in
if loaded {
// Parent class of self is UIViewContorller
self?.present(storeViewController, animated: true, completion: nil)
}
}
}
private func productViewContro...
Convert Go map to json
...
If you had caught the error, you would have seen this:
jsonString, err := json.Marshal(datas)
fmt.Println(err)
// [] json: unsupported type: map[int]main.Foo
The thing is you cannot use integers as keys in JSON; it is forbidden. Instead, you c...
When to use next() and return next() in Node.js
...t's just better to always write return in front of res statements to avoid errors of setting headers after they were sent?
– Adam D
Sep 7 '18 at 6:46
...
How to test if list element exists?
...R! One might want more complex things (like testing if $mylist[[12]]$out$mcerror is defined) which would currently be complicated as hell.
– TMS
Sep 11 '14 at 9:51
...
Suppressing “warning CS4014: Because this call is not awaited, execution of the current method conti
... I found a SupressMessage removed my warning from my Visual Studio "Error List" but not "Output" and #pragma warning disable CSxxxx looks more ugly than the discard ;)
– David Savage
Aug 24 '18 at 9:11
...
Maven: The packaging for this project did not assign a file to the build artifact
...ct and when I run the command "mvn clean install:install", I'm getting the error,
8 Answers
...
When to use .First and when to use .FirstOrDefault with LINQ?
...
First()
Returns first element of a sequence.
It throw an error when There is no element in the result or source is null.
you should use it,If more than one element is expected and you want only first element.
FirstOrDefault()
Returns first element of a sequence, or a defa...
Deserializing JSON to .NET object using Newtonsoft (or LINQ to JSON maybe?)
... but should it be JToken, or JObject? The above code is still throwing the error "Error reading JObject from JsonReader" every now and then.
– TYRONEMICHAEL
Feb 3 '12 at 8:15
...
“You are on a branch yet to be born” when adding git submodule
...ory, and when I attempt to add this particular repo Git gives me a strange error I've never seen before:
4 Answers
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