<else-if> support

[vitalybe]

I often find the need to create an else if. The syntax to do currently is rather ugly:

<If>
    // Condition
</Else>
    <If>
        // First else if
    </Else>
        <If>
            // Second else if
        </Else>
            // Else (first level)
        </If>
    </If
</If>

[AlexGilleran]

Yeah I usually find it's easier to create them all on one level and just keep initialCondition && in the front of subsequent ifs.

The thing is that because <If> desugars into a ternary if there's not actually any easy way to do else if. We'd have to either make it so that what I said above was done automatically, or change it so <If> actually desugars into

function() {
    if (cond1) {
         return x;
    } else if (cond2) {
        return y;
    } else {
        return z;
    }
}

[texttechne]

You can use the ternary operator for else if.

x ? x : ( y ? : z )

[AlexGilleran]

I'd say this is fulfilled by <Choose>