Common 'Basic' Types

Core Datatypes

Common 'Basic' Types

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Most Commonly Used Basic Datatypes

This section covers some of Go's most common 'basic' types that are natively included in the language

package main
            import (
            func main() {
                // In Go, the bool type is used for storing true/false data
                myBool := true // Go infers the type as bool
                // Can also define explicitly, `var myBool bool = true`, which would be equivalent in this case
                fmt.Println("myBool:", myBool)
                // Despite the fact that Go offers non-nil defaults for most datatypes, pointers most notably, may
                // frequently be `nil` which is a specially state like null or None in many other languages
                // that implies the variable has no value. Variables with a non-nil default, may never be nil!
                var err error = nil
                fmt.Println("error?:", err)
                // NB: Since int has a non-nil default, then `var myInt int = nil` would not even compile
                // Strings in Go are very flexible, UTF-8 compatible, and they are stored as byte slices
                // NB: We use the \ for escaping " and for special characters, such as newlines
                var helloWorldStr = "Hello, 世界.\nThat means, \"Hello, World.\""
                // We can also use backticks to create raw multi-line strings
                helloWorldStr = `Hello, 世界.
            That means, "Hello, World."`
                fmt.Println("We created this with `` syntax:", helloWorldStr)
                // Integers are usually defined like this (Go infers the `int` type)
                myInt := 42
                fmt.Println("myInt:", myInt)
                // For specifying 64-bit integers specifically, we can use this notation
                var myInt64 int64 = 21
                fmt.Println("myInt64:", myInt64)
                // Similar terms go for floating point numbers
                myFloat := 42.42
                fmt.Println("myFloat:", myFloat)
                // For specifying 64-bit floats specifically, we can use this notation
                var myFloat64 float64 = 21.21
                fmt.Println("myFloat64:", myFloat64)
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