print "aa".has(re)
print "bb".has(re)
+
+var str = "é12345"
+
+var re1 = "3".to_re
+print str.split(re1)
+
+var re2 = "5".to_re
+print str.split(re2)
+
+str = "résonnance réseau résultat"
+
+print str.search_all("rés".to_re).join(", ")
+
+str = "あついあのあほ"
+print str.split("あ(の)?".to_re).join
+
+for i in str.search_all("あ(の)?".to_re) do
+ print "Match found : {i}"
+ print "Submatches: "
+ var sbs = i.subs
+ for j in sbs.length.times do
+ print "[{j}] : {sbs[j] or else "null"} "
+ end
+end