I guess much like Range literals in general, it's often needed to have parens around them.

Why don't you allow a range without end, like (1..)? There are two advantages. First, we can write ary[1..] instead of ary[1..-1]. The -1 is one of the most I dislike in Ruby. It is very magical, ugly, redundant, and disappointing. I envy Python's ary[1:]. I know that ary.drop(1) is slightly fast, but too long for such a common operation, IMO. Second, we can write (1..).each {|n| ... }.

A beginless range is experimentally introduced. It might not be as useful as an endless range, but would be good for DSL purposes.

The host range for three of the plasmids (pBF1, pB7, and pB9) was further investigated by the GFP method described above

Plasmid pBBR1 thus appears to be a new member of this group, even though it resides in gram-negative bacteria and does not replicate via a rolling-circle mechanism

ages 2–10 y

RP4 has been shown to exhibit a very broad host range and has been demonstrated to efficiently transfer in activated sludge (22, 40), chicken manure (24), and the rhizospheres of various plants (38, 39).

The weakest first factor accounted for 18.3% of variance

(6-12H