I am trying to implement a Monad interface in Java 8 following this article however I've got the following compiling errors
Is it true to say that in a Stream in Java 8, you can only use method references that take a single argument (if you disallow wrapping the method reference with a method call)?
I am studying for an "Introduction to Functional Programming" exam. This is one of the problems I am stuck on:
I have this piece of code, where I want to return an element if present, otherwise nullbut I got an Exception in thread "main" java.lang.NullPointerException anyway
I have this piece of Java8 code:But I have this compilation error and I don't know why:To expand upon Joe's answer, it seems like you want a Set<Purchase> in sorted order (for whatever reason that may be), given you have a good reason to do so in which case you...
So I found a curiosity with Java's Map computeIfAbsent (using java8) method and I hope someone can tell me why this is happening as I can not really follow the logic behind that issue.
I want to define a function f [Int] -> Int where f is equal to the sum of the elements in the list if the length of the list is a perfect square and is undefined otherwise. What is the idiomatic way to do this in Haskell?
So, how to get outcome of this code using functional programming: Which throws out "Total of reduced numbers: 47.7"
Here is my code. I got a compile error at second case clause:Error:(92, 26) value < is not a member of AnyVal case x if x._2 < 2 => "price under 2"
What do I need to do for the output to be the below?I looked into concat but as the javadoc explains, it just appends one after the other, it does not interleave / intersperse.