[R] regexpr

[runner]

Hi, 

I 'd like to match each member of a list to a target string, e.g.
------------------------------
mylist=c("MN","NY","FL")
g=regexpr(mylist[1], "Those from MN:")
if (g>0)
{
"On list"
}
------------------------------
My question is:

How to add an end-of-string symbol '$' to the to-match string? so that 'M'
won't match.

Of course, "MN$" will work, but i want to use it in a loop; "mylist[i]" is
what i need. I tried "mylist[1]$", but didn't work. So why it doesn't
extrapolate? How to do it?

Thanks a lot!
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