▁scient ist ▁notable ▁as ▁a ▁designer ▁and ▁implement er ▁of ▁A PL . ▁ ▁His ▁A PL ▁career ▁started ▁at ▁I . P . ▁Sh arp ▁Associ ates ▁( IP SA ) ▁in ▁ 1 9 7 1 . ▁ ▁Ber ne ck y ' s ▁first ▁published ▁A PL ▁work ▁concerned ▁with ▁speed ing ▁up ▁the ▁i ota ▁and ▁e psilon ▁( index - of ▁and ▁membership ) ▁primit ives ▁functions ▁by ▁orders ▁of ▁magnitude . ▁While ▁at ▁IP SA , ▁he ▁was ▁a ▁colle ague ▁of ▁Roger ▁H ui , ▁Dick ▁L ath well , ▁Eug ene ▁Mc D onn ell , ▁Roger ▁Moore , ▁Arthur ▁Whit ney , ▁and ▁A PL ▁invent or ▁Ken ▁I vers on . ▁ ▁He ▁continued ▁on ▁after ▁IP SA ▁was ▁acquired ▁by ▁Re ut ers ▁on ▁ 1 9 8 7 - 0 4 - 0 1 , ▁and ▁left ▁Re ut ers ▁in ▁ 1 9 9 0 ▁to ▁found ▁S nake ▁Island ▁Research . ▁ ▁He ▁works ▁on ▁A PL ▁compiler ▁and ▁parallel - processing ▁technology ▁to ▁this ▁day . ▁ ▁Ber ne ck y ▁holds ▁the ▁Master ▁of ▁Science ▁degree ▁from ▁the ▁University ▁of ▁Toronto . ▁ ▁References ▁ ▁External ▁links ▁ ▁S nake ▁Island ▁Research ▁Inc . ▁ ▁Category : L iving ▁people ▁Category : AP L ▁implement ers ▁Category : Cal iforn ia ▁Institute ▁of ▁Technology ▁al umn i ▁Category : Can ad ian ▁computer ▁scient ists ▁Category : I . ▁P . ▁Sh arp ▁Associ ates ▁employees ▁Category