score:1

Accepted answer

It's not entirely clear what you're asking. If you want a method that's in the API you're using, then that's up to the implementors of the API. E.g. maybe you're using Jwt.Net here, you'd have to have something like that added if you want that feature "out-of-the-box".

Otherwise, you can't get out of writing the loop yourself. But, what you can do is encapsulate the loop in an extension method:

static class JwtExtensions
{
    public static JwtBuilder AddClaims<TKey, TValue>(this JwtBuilder builder, Dictionary<TKey, TValue> dictionary)
    {
        foreach (var kvp in dictionary)
        {
            builder.AddClaim(kvp.Key, kvp.Value);
        }

        return builder;
    }
}

Then you can write something like this:

var token = new JwtBuilder()
    .WithAlgorithm(new HMACSHA256Algorithm())
    .WithSecret(_Signature)
    .AddClaims(myDictionary)
    .Build();

score:0

I'm not sure you can get around using a loop here:

var tokenBuilder = new JwtBuilder()
    .WithAlgorithm(new HMACSHA256Algorithm())
    .WithSecret(_Signature);

for (KeyValuePair<string, int> entry in myDictionary) {
    tokenBuilder.AddClaim(entry.Key, entry.Value);
}

var token = tokenBuilder.build();

score:0

You can use for loop

for (KeyValuePair<string, int> claimval in myDictionary) {
    tokenBuilder.AddClaim(claimval.Key, claimval.Value);
}

score:1

If i understand you, you are looking to extend the fluent interface of the JwtBuilder class

My spidey senses tells me there is no interface being passed around via the other methods like WithAlgorithm and most likely just the 'JwtBuilder` class itself

In this case you could easily implement an extension method to acheive your wildest dreams

public static class JwtBuilder Extensions
{
    public static JwtBuilder AddClaims(this JwtBuilder source, Dictionary<string, int> claims)
    {
        for (KeyValuePair<string, int> claim in claims) 
        {
            source.AddClaim(claim .Key, claim .Value);
        }

        return source;
    }
}

Note : you hould check the return type of the other methods as it might be an interface, in that case just use it in your extension me your extension method

Which would look something like this

public static IInterface AddClaims(this <IInterface> source, Dictionary<string, int> claims)

// Or  

public static T AddClaims<T>(this T source, Dictionary<string, int> claims)
where T : ISomeInterface

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