Learn Go: Conditionals

If you want to learn about implementing conditionals in Go, you've come to the right place!

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Key Concepts

Review core concepts you need to learn to master this subject

Go If Statement

Go else Statement

Go Comparison Operators

Go Logical Operators

Go Else If Statement

Go Short Variable Declaration

Go Switch Statement

Go Seed Value

Go If Statement

A Go if statement evaluates a condition and executes a statement block enclosed in curly braces {..} if the evaluation returns true. The condition may be optionally enclosed inside a pair of parentheses (...).

if (healthy) {
  fmt.Println("Work.")
}
if sick {
  fmt.Println("Stay home.")
}

Learn Go: Conditionals

Lesson 1 of 1

1
What are Conditionals?
We make decisions every day based on certain conditions. Is the alarm ringing? If so, turn it off. Is it raining? If so, bring an umbrella. Is the ice cream truck parked outside? If so, it’s time …
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2
The if Statement
What if…? What if we’re hungry? If it’s raining? If the alarm’s ringing? We would do something in response to these conditions. if statements work very similarly to our own decision-making proce…
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3
The else Statement
If we’re hungry we would go to eat something. But if we’re not hungry then we don’t. The idea is that we have a backup plan or something we can default to in case our condition isn’t met. We can p…
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4
Comparison Operators
So far we’ve been checking on boolean values (variable assigned a true or false value). But, we can check more than a single value using comparison operators. Here are two commonly used compariso…
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5
Comparison Operators Continued
There are more comparison operators that we haven’t covered and they may seem familiar from math class: Operator | Meaning: — | — | Greater than = | Greater than or equal to Like the previ…
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6
Logical Operators (And, Or)
In the previous exercises we checked one condition at a time. But what if we wanted to check multiple conditions at a time? To do so, we can use logical operators. There are three logical operato…
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7
Logical Operators (Not)
Our last logical operator is the not (!) operator. It negates (reverses) the value of a boolean. For example: bored := true fmt.Println(!bored) // Prints false tired := false; fmt.Println(!tir…
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8
The else if Statement
We can add different conditions to our if…else statements using an else if statement. Adding an else if statement allows us to check another condition after our if statement checks its condition….
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9
The switch Statement
else if statements are great for checking multiple conditions. However, we can find ourselves needing to check so many conditions that writing all the necessary else if statements can feel tedious….
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10
Scoped Short Declaration Statement
We can also include a short variable declaration before we provide a condition in either if or switch statements. Here’s the syntax: x := 8 y := 9 if product := x * y; product > 60 { fmt.Println…
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11
Randomizing
Previously, we used hard coded values (values that don’t change) and then created conditionals that checked on these values. For example: alarmRinging := true if alarmRinging { fmt.Println(“…
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12
Seeding
Previously, we saw how our random numbers weren’t entirely random. The reason for this behavior is due to how Go seeds or chooses a number as a starting point for generating random numbers. By de…
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13
Review
If you’ve made it to this exercise, then you’ve finished Go’s conditionals lesson, great job! Here are the topics covered In this lesson: * How to create an if statement that checks a condition an…
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