Creating a var of string type in Go

In the Go language, creating a variable of string type is very simple. By using the keyword var, we can declare and initialize a string variable. For example, var str string = "Hello, World!" This statement will create a string variable named str and initialize it to "Hello, World!". In addition, we can also use short variable declarations to create string variables, such as: str := "Hello, World!" This way can declare and initialize variables more concisely. Whether using var or short variable declaration, we can use this string variable in subsequent code. In Go, the string type is a very commonly used data type that can store and manipulate text data. By using var keyword or short variable declaration, we can easily create variables of string type and use them in the program.

Question content

First of all, I would like to say that I am quite unfamiliar with the Go language.

My program takes a CSV and reads each row as a [] string and adds them all to a slice. Another part of the program is supposed to add another entry to the slice containing the new information, but I don't know how to declare the new entry as type []string. If it tries to use a struct, code, the []Customer type is incompatible with the []string type. If I convert the []string slice to the []Customer type at the beginning, I lose the ability to use time.Parse on some parts of each entry. I cannot declare a new entry as type []string. Is there any way to do this? Code to read a CSV and add to a slice of type []string.

var customerInfo [][]string

for {
    record, err := reader.Read()
    if err == io.EOF {
        break
    }
    if err != nil {
        panic(err)
    }
    customerInfo = append(customerInfo, record)
}

time.Parse function and code for updating a column of [] strings.

today := time.Now()
for i, e := range customerInfo {
    if i > 0 {
        lastOilChange, err := time.Parse("2006-01-02", e[4])
        if err != nil {
            panic(err)
        }
        diff := today.Sub(lastOilChange)
        diffInMonths := float64(diff.Hours() / 24 / 30)
        if diffInMonths > 6 {
            e[6] = today.Format("2006-01-02")
        }
    }
}

Code to add new rows to CSV (the only part currently not working)

var newCust []string = {"1500", "Your Name", "Make Model", "City", "date1", "date2", "date3", "date4"}
customerInfo = append(customerInfo, newCust)

The error I get when I run this program with the code that adds new rows to the CSV is

syntax error: unexpected {, expected expression

Solution

Compound literalmissingtype. Add a type like this:

var newCust []string = []string{"1500", "Your Name", "Make Model", "City", "date1", "date2", "date3", "date4"}

Note the second []string.

No need to repeat types. Use this code:

var newCust = []string{"1500", "Your Name", "Make Model", "City", "date1", "date2", "date3", "date4"}

or even shorter :

newCust := []string{"1500", "Your Name", "Make Model", "City", "date1", "date2", "date3", "date4"}

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