Welcome, learners! Let's delve deeper into Scala programming by combining loops and decision-making structures. We'll explore the potential of integrating loops, such as for
and while
, with conditional structures like if
and match-case
scenarios. These combinations can make our programs considerably more dynamic and flexible.
Let’s first revisit the conditional constructs in Scala. You'll recall the if
construct, which executes a block of code when a condition is met. For example:
Compound conditions, built with logical operators like &&
(AND) and ||
(OR), can also be used:
Next, let's review the match-case
structure. Resembling a compact form of the if
- else
chains, the match-case
matches its argument with different patterns:
We can combine conditional statements with loops. Here's an if
construct within a for
loop:
A for
loop can also easily incorporate a match-case
structure:
We can apply the same combined approach with while
loops. Here's a while
loop with an if
construct:
A while
loop can also include a match-case
structure:
Now, let's consider real-life examples. Imagine you're organizing a kids' game. Each child has cards numbered from 1
to 10
. If a card's number is even, it's placed in Box A; otherwise, it's placed in Box B.
Consider a scenario where a smart home garden watering system is in place. Flowers are watered on Monday, Wednesday, and Friday, while trees are watered on Tuesday and Thursday:
Just by slightly extending our basic understanding of loops and conditions, we can create intricate and useful code!
We've reviewed the if
and match-case
structures and have learned how to use these within for
and while
loops. Up next are practice exercises where you'll apply these concepts. Remember— the best way to learn is by doing. Good luck!
