It takes a string and the number of times it should be repeated as arguments and returns the multiplied string as output. The function panics if
count is negative or if
len(s) * count overflows.
Look at the following example:
gosamples.dev gosamples.dev gosamples.dev ------------------------------------------
11, we create a new multiplied string which is the string
"gosamples.dev " repeated three times. Then, in line
12, we want to make a line separator consisting of a repeated
- character. Its length should be equal to the number of characters of the previous string.
Note that we use the
utf8.RuneCountInString() function to count the number of characters instead of
len(). The former counts the runes (Unicode code points) in the string, while the latter counts the number of bytes. When counting characters in a string
"gosamples.dev gosamples.dev gosamples.dev ", both functions will return the same number; however it is good to make a habit of using
utf8.RuneCountInString() when you want to count the number of characters. It will prevent incorrect results when you change the input string:
s := "€€€" fmt.Println(len(s)) fmt.Println(utf8.RuneCountInString(s))
The € (euro) symbol is a three-byte character, encoded in UTF-8 with bytes 0xE2, 0x82, 0xAC.