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→Grille cypher
Miraheze>Adám Brudzewsky |
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This page contains examples that show APL's strengths. The examples require minimal background and have no special dependencies. | This page contains examples that show APL's strengths. The examples require minimal background and have no special dependencies. If these examples are too simple for you, have a look at our [[advanced examples]]. | ||
[[ | |||
== Arithmetic mean == | == Arithmetic mean == | ||
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will transform a list of strings representing words into a comma-separated list: | will transform a list of strings representing words into a comma-separated list: | ||
<source lang=apl> | <source lang=apl> | ||
{⍺,', ',⍵}⌿'cow' 'sheep' 'cat' 'dog' | |||
┌────────────────────┐ | ┌────────────────────┐ | ||
│cow, sheep, cat, dog│ | │cow, sheep, cat, dog│ | ||
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=== Tacit programming === | === Tacit programming === | ||
{{Main|Tacit}} | |||
In APL’s tacit definition, no braces are needed to mark the definition of a function: primitive functions just combine in a way that enables us to omit any reference to the function arguments — hence ''tacit''. Here is the same calculation written tacitly: | In APL’s tacit definition, no braces are needed to mark the definition of a function: primitive functions just combine in a way that enables us to omit any reference to the function arguments — hence ''tacit''. Here is the same calculation written tacitly: | ||
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</source> | </source> | ||
The operator <source lang=apl inline> | The operator <source lang=apl inline>⌿</source> can also be used to modify the <source lang=apl inline>(+⌿÷≢)</source> function to produce a moving average. | ||
<source lang=apl> | <source lang=apl> | ||
2 (+⌿÷≢)/ 3 4.5 7 21 | 2 (+⌿÷≢)/ 3 4.5 7 21 | ||
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ave 3 4.5 7 21 | ave 3 4.5 7 21 | ||
8.875 | 8.875 | ||
mave ← | mave ← ave⌿ | ||
2 mave 3 4.5 7 21 | 2 mave 3 4.5 7 21 | ||
3.75 5.75 14 | 3.75 5.75 14 | ||
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=== Grille cypher === | === Grille cypher === | ||
A [ | A [[wikipedia:grille (cryptography)|grille]] is a 500 year old method for encrypting messages. | ||
[[File:Grille.png|none|500px|frameless | [[File:Grille.png|none|500px|frameless|The application of a grille cypher]] | ||
<p> | <p> | ||
Represent both the grid of letters and the grille as character matrices. | Represent both the grid of letters and the grille as character matrices. | ||
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</source> | </source> | ||
{{APL | {{APL development}} | ||