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 LL("m") grammar for some "m". A "ε"-free LL(1) grammar is also a SLR(1) grammar. A LL(1) grammar with symbols that have both empty and non-empty derivations is also a LALR(1) grammar. A LL(1) grammar with symbols that have only the empty derivation may or may not be LALR(1). LL grammars cannot have rules containing left recursion. Removing left recursion from a context-free grammar is always possible. However, the resulting grammar may be bigger, require more lookahead tokens than preferred to be an LL grammar, or not be an LL grammar at all. LL("k") grammars that are ε-free can be transformed