Android Question How to remove that last character in a StringBuilder variable

[ColorMan]

Given global StringBuilder variable sb one can Append new strings as sb.Append("string"). There is a complementary operator sb.Remove(FirstIndex, LastIndex) which can extract a string from the middle of a string. But the Guides say that the character position identified as LastIndex is not removed. The what is the process to remove only the character at the postion of LastIndex?
sb.Remove(LastIndex, LastIndex)?

 

[William Lancee]

For example to remove the very last character of sb ...

sb.Remove(sb.Length - 1, sb.Length)

 

[emexes]

the character at the position of LastIndex

The indexes point to "between the characters" rather than at them, which is sometimes confusing as fcuk but does have the nice property that the length of the string pointed to by two indexes is the numerical difference of the indexes. Thus (LastIndex, LastIndex) is not actually pointing at a character; it is pointing at the end boundary edge of the string, just after the last character.

 

[ColorMan]

Thank you both - the explanation is now clear and the Remove method works perfectly.