APL Demonstration (1975) [video]
The YouTube video explores APL, a programming language by Kenneth Iverson in 1957. It simplifies algebraic operations for arrays, widely used for its versatility in various industries. Topics include logical propositions, arithmetic functions, variable naming, APL expressions, Iota function, vector operations, matrices, and arrays.
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The YouTube video at the provided URL delves into APL, a programming language created by Kenneth Iverson in 1957. APL streamlines and expands algebraic and logical notation for array operations, finding extensive application across industries and fields due to its straightforwardness and diverse functions. The content of the video includes discussions on logical propositions, arithmetic functions, the significance of naming variables, assessing APL expressions, utilizing the Iota function to create vectors, element-wise vector operations, and its relevance to matrices and higher-dimensional arrays.
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6 comments blog←{⍺×⍵×1-⍵}
backbias←{+/,⍵}
logistic←{÷1+*-⍵}
maxpos←{(,⍵)⍳⌈/,⍵}
backavgpool←{2⌿2/⍵÷4}⍤2
meansqerr←{÷∘2+/,(⍺-⍵)*2}
avgpool←{÷∘4{+/,⍵}⌺(2 2⍴2)⍤2⊢⍵}
conv←{s←1+(⍴⍵)-⍴⍺⋄⊃+/,⍺×(⍳⍴⍺){s↑⍺↓⍵} ⊂⍵}
backin←{(d w in)←⍵⋄⊃+/,w{(⍴in)↑(-⍵+⍴d)↑⍺×d} ⍳⍴w}
multiconv←{(a ws bs)←⍵⋄bs{⍺+⍵ conv a}⍤(0,(⍴⍴a))⊢ws}
APL Demonstration (1975) [video] - https://news.ycombinator.com/item?id=32118279 - July 2022 (1 comment)
APL Demonstration (1975) [video] - https://news.ycombinator.com/item?id=21104698 - Sept 2019 (51 comments)
APL Demonstration From 1975 [video] - https://news.ycombinator.com/item?id=7817593 - May 2014 (7 comments)
APL demonstration 1975 [video] - https://news.ycombinator.com/item?id=6155639 - Aug 2013 (1 comment
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https://www.youtube.com/@arraycast
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