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In Scala, what exactly does 'val a: A = _' (underscore) mean?
...s initialises the variable to a default value. From the Scala Language Specification:
0 if T is Int or one of its subrange types,
0L if T is Long,
0.0f if T is Float,
0.0d if T is Double,
false if T is Boolean,
() if T is Unit,
null for all other types T.
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How can I import Swift code to Objective-C?
I have written a library in Swift and I wasn't able to import it to my current project, written in Objective-C.
15 Answers
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AngularJS: Injecting service into a HTTP interceptor (Circular dependency)
... var AuthService = $injector.get('Auth');
if (!AuthService.isAuthenticated()) {
$location.path('/login');
} else {
//add session_id as a bearer token in header of all outgoing HTTP requests.
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What's the difference between globals(), locals(), and vars()?
What is the difference between globals() , locals() , and vars() ? What do they return? Are updates to the results useful?
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What is the Invariant Culture?
..., serialization: you can have 1,1 value in one culture and 1.1 in another. If you will try to parse "1,1" value in the second culture, then parsing will fail. However you can use the invariant culture to convert a number to a string and later parse it back from any computer with any culture set.
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Set operations (union, intersection) on Swift array?
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Yes, Swift has the Set class.
let array1 = ["a", "b", "c"]
let array2 = ["a", "b", "d"]
let set1:Set<String> = Set(array1)
let set2:Set<String> = Set(array2)
Swift 3.0+ can do operations on sets as:
firstSet.union(s...
Django REST Framework: adding additional field to ModelSerializer
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So, based on this answer, if you want to pass say 12 extra fields to your serializer, you need to define 12 specific methods for each field that just returns foo.field_custom ?
– AlxVallejo
Apr 13 '18 at 19:13
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In a Git repository, how to properly rename a directory?
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But if you want to rename from casesensitive to CaseSensitive, you can do this way: git mv casesensitive Temp and then git mv Temp CaseSensitive
– ViliusK
Feb 9 '14 at 21:0...
Download file from web in Python 3
...nload a .jar (java) file from a web server, by reading the URL that is specified in the .jad file of the same game/application. I'm using Python 3.2.1
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How do you compare two version Strings in Java?
... return this.version;
}
public Version(String version) {
if(version == null)
throw new IllegalArgumentException("Version can not be null");
if(!version.matches("[0-9]+(\\.[0-9]+)*"))
throw new IllegalArgumentException("Invalid version format");
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