How to convert golang string to uint

In Golang, string is a common data type. However, in some cases you may need to convert the string to an unsigned integer (uint). This type of conversion is very common in computer programming, especially when you need to extract data from a string when working with numbers. If you are looking for how to convert string to unsigned integer in Golang, you are in the right place!

In Golang, the function of converting a string to an unsigned integer (uint) is very simple and only requires the use of some basic programming skills. First you need to create an empty unsigned integer variable, then convert the string to an unsigned integer and assign it to the variable. Here is sample code on how to do this:

str := "123"
var i uint64
i, err := strconv.ParseUint(str, 10, 64)
if err != nil {
    // handle error
}
fmt.Println(i)

Let’s break this code block down one by one to better understand how it works:

• str : = "123" - Define a string variable str and assign it the value "123".
• var i uint64 - Defines an empty unsigned integer variable i.
• i, err := strconv.ParseUint(str, 10, 64) - Use the strconv.ParseUint() function to convert the string str Convert to an unsigned integer and assign it to the i variable. This function takes three parameters from left to right: string, base, and number of digits. In this example, we use decimal, which is 10, and set the number of digits to 64.
• if err != nil - If an error occurs during conversion, the error is handled here.
• fmt.Println(i) - Prints the value of the unsigned integer i.

By using the above code you can now convert a string to an unsigned integer. However, you may be wondering what happens if the input string cannot be converted to an unsigned integer. In this case, the strconv.ParseUint() function will return an error, in which case you should take appropriate steps to handle the error and provide appropriate feedback to the user.

In some cases you may need to convert a string to a signed integer (int). In this case, just slightly modify the sample code above. Here is a sample code that converts a string to a signed integer:

str := "-123"
var i int64
i, err := strconv.ParseInt(str, 10, 64)
if err != nil {
    // handle error
}
fmt.Println(i)

Note that the function we use is strconv.ParseInt(), not strconv.ParseUint( ). Additionally, we created a signed integer variable i instead of an unsigned integer variable i. The rest of the code is basically the same as the previous example.

To summarize, converting characters to integers is a common task, and converting strings to unsigned integers (uint) or signed integers (int) is one of the common subtasks. Doing this in Golang is very easy, you just need to use the relevant functions in the strconv package. Remember, if the string cannot be converted to an integer, you should handle the error in your code and provide appropriate feedback to the user.

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