Text Concatenation

[% a ~ b # infix text concatenation operator a ~ b ~ c; # chainable (note semi-colon to end expression) ~ a # ~ can be used as a "textify" prefix operator %]--EOF--
look inside...
Thus Spake Andy:

We use ~ for text concatenation. This is what Perl 6 does (or at least it was last time I looked). We can't use Perl 5's . and _ as used in TT2 (and originally slated for Perl 6) is too hard to see. The ~ operator can also be used as a prefix operator to implicitly textify the next item.