[julia-users] How to change the character at a specific position of a string?

[Dongning Guo]

Simple question: How to change the character at a specific position of a 
string?  Searched for a while in vain.  Thanks.


For example:

*julia> **s=^("a",4)*

*"aaaa"*
How to change the second character to *'**b'*, that is to change s to:

*"abaa"*