Strings and strconv Package
In this lesson, you'll study strings, strconv package, and the functions supported by them.
We'll cover the following
- Prefixes and suffixes
- Testing whether a string contains a substring
- Indicating the index a substring or character in a string
- Replacing substring
- Counting occurrences of a substring
- Repeating a string
- Changing the case of a string
- Trimming a string
- Splitting a string
- Joining over a slice
- Reading from a string
- Conversion to and from a string
- Try it yourself
Strings are a basic data structure, and every language has a number of predefined functions for manipulating strings. In Go, these are gathered in a package, strings. We’ll discuss below some very useful functions one by one.
Prefixes and suffixes
HasPrefix tests whether the string s begins with a prefix prefix:
strings.HasPrefix(s, prefix string) bool
HasSuffix tests whether the string s ends with a suffix suffix:
strings.HasSuffix(s, suffix string) bool
The following program implements these functions:
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