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What do 3 dots next to a parameter type mean in Java?
...oks/tutorial/java/javaOO/arguments.html#varargs
In your example, you could call it as any of the following:
myMethod(); // Likely useless, but possible
myMethod("one", "two", "three");
myMethod("solo");
myMethod(new String[]{"a", "b", "c"});
Important Note: The argument(s) passed in this way is alw...
Multiline strings in JSON
... control characters. As an additional example to make it more clear, consider that "\\" is an escape sequence for backslash, as opposed to a literal backslash. The JSON grammar explicitly excludes control characters (cf. the "char" definition), and instead provides for their representation via es...
Why can I use a function before it's defined in JavaScript?
...urn true; };
it would stop working.
The function declaration is syntactically quite separate from the function expression, even though they look almost identical and can be ambiguous in some cases.
This is documented in the ECMAScript standard, section 10.1.3. Unfortunately ECMA-262 is not a ver...
How to pull request a wiki page on GitHub?
...hub account:
Create a new repository on your github account. Let's call it "Taffy-Wiki".
Clone the Taffy wiki repo to your local machine somewhere: git clone git@github.com:atuttle/Taffy.wiki.git
Remove the original "origin" remote and add your github repo as new "origin" git remote rm o...
Define a lambda expression that raises an Exception
...nts in a lambda (or an eval(), for that matter).
The solution is a hack. Callables like the result of a lambda statement all have an attribute __code__, which can actually be replaced. So, if you create a callable and replace it's __code__ value with the code object from above, you get something ...
Why should I avoid using Properties in C#?
...rties make the client code much simpler to read than the equivalent method calls. I agree that developers need to know that properties are basically methods in disguise - but I think that educating developers about that is better than making code harder to read using methods. (In particular, having ...
Django - filtering on foreign key properties
...
student_user = User.objects.get(id=user_id)
available_subjects = Subject.objects.exclude(subject_grade__student__user=student_user) # My ans
enrolled_subjects = SubjectGrade.objects.filter(student__user=student_user)
context.update({'available_subjects': av...
Logical operators (“and”, “or”) in DOS batch
...ALSE code sections):
@echo off
setlocal
set "A=1" & set "B=2" & call :IF_AND
set "A=1" & set "B=3" & call :IF_AND
set "A=2" & set "B=2" & call :IF_AND
set "A=2" & set "B=3" & call :IF_AND
echo.
set "A=1" & set "B=2" & call :IF_OR
set "A=1" & set "B=3"...
ES6 class variable alternatives
... up the constructor with a bunch of declarations) it can be solved stylistically as well.
The way I view it, many class based languages have the constructor be a function named after the class name itself. Stylistically we could use that that to make an ES6 class that stylistically still makes sens...
Generics in C#, using type of a variable as parameter [duplicate]
...safety - which means that types need to be known at compile-time.
You can call generic methods with types only known at execution time, but you have to use reflection:
// For non-public methods, you'll need to specify binding flags too
MethodInfo method = GetType().GetMethod("DoesEntityExist")
...