▁difference ▁of ▁their ▁numeric ▁values . ▁ ▁The ▁functions , ▁lambda , ▁let , ▁and ▁let rec , ▁are ▁similar ▁but ▁have ▁subt le ▁differences ▁in ▁the ▁way ▁that ▁they ▁treat ▁named ▁variables ▁which ▁make ▁them ▁useful ▁in ▁different ▁ways . ▁lambda ▁defines ▁and ▁returns ▁a ▁function , ▁let ▁bind s ▁expressions ▁to ▁variable ▁names , ▁and ▁let rec ▁is ▁essentially ▁similar ▁to ▁let ▁except ▁it ▁allows ▁for ▁the ▁definition ▁of ▁recursive ▁functions ▁and ▁values , ▁e . g ., ▁infinite ▁series . ▁ ▁References ▁ ▁Further ▁reading ▁ ▁External ▁links ▁▁ ▁The ▁L isp Kit ▁Man ual , ▁Volume ▁ 1 , ▁Volume ▁ 2 ▁ ▁Im plementation ▁of ▁L isp kit ▁ ▁GNU ▁Pascal ▁L isp Kit ▁port ▁ ▁Archive ▁of ▁old ▁L isp Kit ▁L IS P ▁code ▁and ▁files , ▁plus ▁C ▁implementation ▁of ▁SE CD ▁machine ▁ ▁P aper ▁about ▁a ▁L isp Kit ▁L IS P ▁implementation ▁in ▁Java , ▁and ▁the ▁implementation ▁itself ▁ ▁Category : L isp ▁programming ▁language ▁family <0x0A> </s> ▁Sh orn cl iffe ▁Pier ▁is ▁a ▁historic ▁pier ▁in ▁Sh orn cl iffe , ▁Queensland , ▁Australia , ▁situated ▁near ▁Saint ▁Patrick ' s ▁College ▁and ▁lower ▁Mo ora ▁Park . ▁The ▁pier ▁with ▁its ▁white ▁f aded ▁tim ber ▁rail ings , ▁colonial ▁street ▁l amps ▁spac ed ▁out ▁along ▁the ▁stretch ▁of ▁pier , ▁and ▁rest ing ▁shelter ▁towards ▁the ▁end ▁was ▁a ▁much ▁visited ▁att raction ▁for ▁families , ▁residents ▁and ▁tour ists ▁to ▁the ▁area . ▁Re aching