LaTeX: Prevent line break in a span of text

Question

How can I prevent LaTeX from inserting linebreaks in my \\texttt{...} or \\url{...} text regions? There\'s no spaces inside I can replace with ~

Answer 1

Define myurl command:

\def\myurl{\hfil\penalty 100 \hfilneg \hbox}

I don't want to cause line overflows, 
I'd just rather LaTeX insert linebreaks before 
\myurl{\tt http://stackoverflow.com/questions/1012799/} 
regions rather than inside them.