Hi Rémi,
Thanks for your detailed explaining. Switch expression is useful in
some cases, but fallthrough is error prone. I seldom use switch statement,
in the past, I widely used it when I wrote lexer/parser by hand. I prefer to
use if-else instead, which is much more powerful.
Though devil exists in some shapes of switch expression, Groovy may
have to support all shapes for compatibility with Java.
I am thinking about a general proposal for Groovy. The common way to
transform statement to expression with parenthesis expression following `#`,
e.g.
```
def a = 6
def r = #(
if (a == 6)
yield 'a'
else
yield 'b'
)
assert 'a' == r
```
Cheers,
Daniel.Sun
-----
Apache Groovy committer & PMC member
Blog: http://blog.sunlan.me
Twitter: @daniel_sun
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