koan | starter kit for full-stack JavaScript web development | Runtime Evironment library

You could change the storage of the values a bit by taking an object with roman signs as keys and decimal values.

For crating a recursive function, you could add an exit condition which is here just a check for an empty string and return zero in this case.

Then check if two character are in the object and if so take the value and add the result of calling the function again with the rest of the string.

If not take only the first character and the value and call the function again for getting the rest of the string.

There's a parameter for it in the new plot_trace function. This does the trick;

Indeed, in the context of expressions (calculations), PowerShell indeed automatically widens anything that exceeds the max. value of [int] / [uint] (32-bit signed / unsigned integers) or [long] / [ulong] (64-bit) to [double], which is easy to verify^[1]:

I find the easiest thing to do is to use the NODE_OPTIONS environment variable instead:

IMHO this is a stupid question to be present on Clojure Koans. I don't recall anything this weird when I went through the Koans in 2014.

Here is the answer:

So the range you define (0..9) is actually already a sequence of numbers. Instead of iterating and repeatedly generating a new random, you can just use a subset of that sequence. In fact, this is the accepted answer's solution to the question you linked. Here are some pointers if you want to implement it yourself to get the practice:

• The first for loop in that solution is unnecessary in Kotlin because of the range. 0..9 does the same thing, you're on the right track there.

• In Kotlin you can call .shuffled() directly on the range without needing to call Collections.shuffle() with an argument like they do.

• You can avoid another loop if you create a string from the whole range and then return a substring.

If you want to look at my solution (with input from others in the comments), it is in a spoiler here:

fun getUniqueNumber(length: Int) = (0..9).shuffled().take(length).joinToString('')

(Note that this doesn't gracefully handle a length above 10, but that's up to you to figure out how to implement. It is up to you to use subList() and then toString(), or toString() and then substring(), the output should be the same.)

String email = client?.personalInfo?.email is not a valid Kotlin syntax. It's a Java syntax.

If you'd like to specify the type, you do it after the variable name:

Simply use:

You can use slice::join: