How are &quot;keyword arguments&quot; different from regular arguments? Can&#39;t all arguments be passed as `name=value` instead of using positional syntax?

Normal arguments vs. keyword arguments

How would I specify a JPA query like:

    Query q = 
      em.createQuery(
        &quot;SELECT x FROM org.SomeTable x WHERE x.someString LIKE &#39;%:someSymbol%&#39;&quot;
      );

followed by:

    q.setParameter(&quot;someSymbol&quot;, &quot;someSubstring&quot;);

and not triggering a

    org.hibernate.QueryParameterException: could not locate named parameter [id]

Much appreciated!

How to specify a JPA named parameter surrounded by wildcards?

I have method

    def test(String a, String b) { }

and I would like to call this with a dynamic parameter map.
I always though that

    test([&#39;1&#39;,&#39;2&#39;]); //valid call

and also 
 
    test([a:&#39;1&#39;,b:&#39;2&#39;]); //=&gt; does not work

will work. but it doesn&#39;t. So I remembered [the spread operator][1], but can&#39;t get it to work....

Is there a way to call a method like the one above with some kind of map as parameter instead of single parameters?


  [1]: https://groovy-lang.org/operators.html#_spread_operator

Named parameters

Dart supports both named optional parameters and positional optional parameters. What are the differences between the two?

Also, how can you tell if an optional parameter was actually specified?

What is the difference between named and positional parameters in Dart?

I thought I could use named parameters after variable-length positional parameters in a function call in Python 2, but I get a `SyntaxError` when importing a python class. I&#39;m writing with the following &quot;get&quot; method, for example:

    class Foo(object):
        def __init__(self):
            print &quot;You have created a Foo.&quot;

        def get(self, *args, raw=False, vars=None):
            print len(args)
            print raw
            print vars

The error looks like:

    def get(self, *args, raw=False, vars=None):
                         ^
    SyntaxError: invalid syntax


I&#39;d like to be able to call the method several ways:

    f = Foo()
    f.get(arg1, arg2)
    f.get(arg1, raw=True)
    f.get(arg1, arg2, raw=True, vars=something)

etc.

Python, default keyword arguments after variable length positional arguments

Are there named parameters in JDBC instead of positional ones, like the `@name`, `@city` in the ADO.NET query below?

    select * from customers where name=@name and city = @city




Named parameters in JDBC

I have this Function in a class:

    func multiply(factor1:Int, factor2:Int) -&gt; Int{
        return factor1 * factor2
    }

I try to call the function using this:

    var multResult = calculator.multiply(9834, 2321)

The problem is that the compiler wants it to look more like this:

    var multResult = calculator.multiply(9834, factor2: 2321)

Why does the first one cause an error? 

Why does a function call require the parameter name in Swift?

I find the named parameters feature in C# quite useful in some cases.

    calculateBMI(70, height: 175);

What can I use if I want this in JavaScript? 

---

What I don’t want is this:

    myFunction({ param1: 70, param2: 175 });

    function myFunction(params){
      // Check if params is an object
      // Check if the parameters I need are non-null
      // Blah blah
    }

That approach I’ve already used. Is there another way?

I’m okay using any library to do this.

All Named Parameters Solutions on Gang of Coders

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