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→Pairing glyphs with their meaning
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<source lang=apl inline>○</source> is a circle for [[Circular]] functions and the ratio between the circumference and the diameter of a circle, [[Pi times|Pi]]. | <source lang=apl inline>○</source> is a circle for [[Circular]] functions and the ratio between the circumference and the diameter of a circle, [[Pi times|Pi]]. | ||
<source lang=apl inline>⍥</source> and <source lang=apl inline>⍤</source> ([[Over]] and [[Atop]]) both apply the left operand after the right operand. However, <source lang=apl inline>⍥</source> has a larger "circle of influence" in that it applies | <source lang=apl inline>⍥</source> and <source lang=apl inline>⍤</source> ([[Over]] and [[Atop]]) both apply the left operand after the right operand. However, <source lang=apl inline>⍥</source> has a larger "circle of influence" in that it applies its right operand twice (once on each argument) while <source lang=apl inline>⍤</source> only applies it once (between the arguments). | ||
<source lang=apl inline>*</source> and <source lang=apl inline>⍣</source> repeatedly apply multiplication and a function, respectively. The star symbolises [[power (function)]]/[[power (operator)]]. | <source lang=apl inline>*</source> and <source lang=apl inline>⍣</source> repeatedly apply multiplication and a function, respectively. The star symbolises [[power (function)]]/[[power (operator)]]. | ||
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<source lang=apl inline>≡</source> can be see as a stack of layers. When used monadically, it finds the [[depth]] of an array. | <source lang=apl inline>≡</source> can be see as a stack of layers. When used monadically, it finds the [[depth]] of an array. | ||
<source lang=apl inline>≢</source> looks like a [[tally]] mark. | <source lang=apl inline>≢</source> looks like a [[tally]] mark. It being sideways can be justified by it counting the length of the leading axis; the vertical axis of a matrix. | ||
<source lang=apl inline>⊂</source> [[enclose]]s its argument in a layer of nesting, and [[Disclose]] uses <source lang=apl inline>⊃</source> by analogy. <source lang=apl inline>⊆</source> is exactly like <source lang=apl inline>⊂</source> except that it only does a [[conditional enclose]], namely only if the argument is [[simple]]. | <source lang=apl inline>⊂</source> [[enclose]]s its argument in a layer of nesting, and [[Disclose]] uses <source lang=apl inline>⊃</source> by analogy. <source lang=apl inline>⊆</source> is exactly like <source lang=apl inline>⊂</source> except that it only does a [[conditional enclose]], namely only if the argument is [[simple]]. | ||
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<source lang=apl inline>⊂</source> and <source lang=apl inline>⊆</source> enclose at specific locations, per a specification, so their dyadic forms are [[Partitioned enclose]] and [[Partition]], respectively. | <source lang=apl inline>⊂</source> and <source lang=apl inline>⊆</source> enclose at specific locations, per a specification, so their dyadic forms are [[Partitioned enclose]] and [[Partition]], respectively. | ||
<source lang=apl inline>∪</source> is a styled letter ''U'' for [[Unique] or [[Union]] if used dyadically. | <source lang=apl inline>∪</source> is a styled letter ''U'' for [[Unique]] or [[Union]] if used dyadically. | ||
<source lang=apl inline>⊥</source> looks like the [[base]] of a pillar. [[Antibase]] uses <source lang=apl inline>⊤</source> by analogy. | <source lang=apl inline>⊥</source> looks like the [[base]] of a pillar. [[Antibase]] uses <source lang=apl inline>⊤</source> by analogy. | ||
<source lang=apl inline>⍝</source> looks like a [[filament lamp]] and provides enlightenment by indicating [[comment]]s. | [[File:Lamp bulb.png|thumb|The [[Lamp]] glyph <source lang=apl inline>⍝</source> looks like a a lamp bulb filament.]] | ||
<source lang=apl inline>⍝</source> looks like a [[wikipedia:filament lamp|filament lamp]] and provides enlightenment by indicating [[comment]]s. | |||
<source lang=apl inline>,</source> [[concatenate]]s arrays, much like the common punctuation symbol concatenates phrases. <source lang=apl inline>⍪</source> has an added styled row, indicating that for matrices, it concatenates additional rows. | <source lang=apl inline>,</source> [[concatenate]]s arrays, much like the common punctuation symbol concatenates phrases. <source lang=apl inline>⍪</source> has an added styled row, indicating that for matrices, it concatenates additional rows. | ||