September 2018
Intermediate to advanced
398 pages
9h 43m
English
Content preview from Scala Programming Projects
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Understanding tail-recursion
Add the following tests underneath the previous one:
"RetCalc.nbOfMonthsSaving" should { "calculate how long I need to save before I can retire" in {...} "not crash if the resulting nbOfMonths is very high" in { val actual = RetCalc.nbOfMonthsSaving( interestRate = 0.01 / 12, nbOfMonthsInRetirement = 40 * 12, netIncome = 3000, currentExpenses = 2999, initialCapital = 0) val expected = 8280 actual should ===(expected) } "not loop forever if I enter bad parameters" in pending
We will implement the not loop forever later on. It is a good practice to write pending tests as soon as you think about new edge cases or other use cases for your function. It helps to keep a direction toward the end goal, and gives some momentum—as ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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