Syntax and examples of formatted output in Go language

Format is very commonly used in logic. When using formatting functions, pay attention to writing:

(Format style, parameter list…)

• Format style: string form, formatted verb starts with %.
• Parameter list: Multiple parameters are separated by commas, and the number must correspond to the number in the format style one by one, otherwise an error will be reported during runtime.

In Go, formatted naming continues with the C language style:

var progress = 2
var target = 8

// Two-parameter formattingtitle := ("%d herbs have been collected, and %d will be required to complete the task", progress, target)

(title)

pi := 3.14159
// Output in the format of the value itselfvariant := ("%v %v %v", "Moon Base", pi, true)

(variant)

// Anonymous structure declaration and assign initial valueprofile := &struct {
    Name string
    HP   int
}{
    Name: "rat",
    HP:   150,
}

("Use '%%+v' %+v\n", profile)

("Use '%%#v' %#v\n", profile)

("Use '%%T' %T\n", profile)

The code output is as follows:

2 herbs have been collected, and 8 more tasks are needed

"Moon Base" 3.14159 true

Use '%+v' &{Name:rat HP:150}

Use '%#v' &struct { Name string; HP int }{Name:"rat", HP:150}

Use '%T' *struct { Name string; HP int } in C language, use %d to represent integer parameters

The following table marks the verbs and functions in some commonly used formatting styles.

Summarize

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