So, we'll go no more a roving So, we'll go no more a roving "So, we'll go no more a roving" is a poem, written by (George Gordon) Lord Byron (1788–1824), and included in a letter to Thomas Moore on 28 February 1817. Moore published the poem in 1830 as part of "Letters and Journals of Lord Byron". It evocatively describes the fatigue of age conquering the restlessness of youth. Byron wrote the poem at the age of twenty-nine. In the letter to Thomas Moore, the poem is preceded by an account of its genesis. "At present, I am on the invalid regimen myself. The Carnival--that is,
LL grammar generated by some "ε"-free LL("k") grammar. As allowing more tokens of lookahead makes the parser strictly more powerful, the languages that can be recognized with a LL("k") parser are a strict subset of the languages that can be recognized by a LL("k+n"), "n > 0" parser. This creates a strictly increasing sequence of sets: LL(0) ⊊ LL(1) ⊊ LL(2) ⊊ …. Since these are all DCFLs, a corollary is that for any fixed "k", there are DCFLs that cannot be recognized by a LL("k") parser. An LL parser is called an LL(*) parser if it is not restricted to a