System Function CR: Difference between revisions
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<tr> | <tr> | ||
<td><apll>L</apll> is an integer scalar whose value is | <td><apll>L</apll> is an integer scalar whose value is either <apll>1</apll> or <apll>2</apll>.</td> | ||
</tr> | </tr> | ||
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<br /> | <br /> | ||
<p>If <apll> | <p>If the first character in <apll>R</apll> is <apll>#</apll>, then <apll>R</apll> is assumed to name an internal Magic Function; otherwise <apll>R</apll> is assumed to name a user-defined function/operator or a directly assigned function (e.g., <apll>f←+.×</apll>).</p> | ||
<p> | <p>If <apll>L=2</apll>, then <apll>Z</apll> is a character matrix with as many rows as there are lines in the function (including the header), and as many columns as the longest line (including the header).</p> | ||
<p>If <apll>L | <p>If <apll>L=1</apll>, then <apll>Z</apll> is either a simple character vector (for directly assigned functions), or a vector of character vectors (for user-defined functions/operators) with as many elements in <apll>Z</apll> as there are lines in the function (including the header), and each element of <apll>Z</apll> is a character vector representation of the corresponding line (or header) in the function.</p> | ||
<p>For example,</p> | <p>For example,</p> | ||
<apll> | <apll> f←+.×<br /> | ||
⍴⎕←2 ⎕cr 'f'<br /> | |||
+.×<br /> | |||
1 3<br /> | |||
⍴⎕←1 ⎕cr 'f'<br /> | |||
+.×<br /> | |||
3<br /> | |||
2 ⎕cr '#MonIota'<br /> | |||
Z←#MonIota R<br /> | Z←#MonIota R<br /> | ||
Z←⊃∘.,/⍳¨R<br /> | Z←⊃∘.,/⍳¨R<br /> | ||
1 ⎕cr '#MonIota'<br /> | |||
Z←#MonIota R Z←⊃∘.,/⍳¨R<br /> | |||
</apll> | </apll> | ||
<p>When this was written, the existing magic functions were named <apll>#MonIota</apll>, <apll>#DydIota</apll>, <apll>#MonDnShoe</apll>, <apll>#DydTilde</apll>, <apll>#MonRank</apll>, <apll>#DydRank</apll>, <apll>#Conform</apll>, <apll>#MonFMT</apll>, and <apll># | <p>When this was written, the existing magic functions were named <apll>#MonIota</apll>, <apll>#DydIota</apll>, <apll>#MonDnShoe</apll>, <apll>#DydTilde</apll>, <apll>#MonRank</apll>, <apll>#DydRank</apll>, <apll>#Conform</apll>, <apll>#MonFMT</apll>, <apll>#Box</apll>, and <apll>#MonVR</apll>. | ||
Revision as of 12:57, 8 May 2009
Monadic Function
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| R is a character scalar or vector. | ||||
| Z is a character matrix with as many rows as there are lines in the function (including the header), and as many columns as the longest line (including the header). |
This monadic function behaves the same as described in the Extended APL Standard, except it also displays the canonical representation of an assigned function or operator.
For example,
f←,∘⍋∘⍋∘,
⍴⎕←⎕cr 'f'
,∘⍋∘⍋∘,
1 7
If the assigned function references an unnamed value which is not a simple scalar, the representation shows a marker in that spot.
For example,
f←'abcdefg'∘⎕cr
⎕cr 'f'
…∘⎕cr
f←⎕cr
⎕cr 'f'
f
f 'f'
f
Dyadic Function
|
||||
| R is a character scalar or vector. | ||||
| L is an integer scalar whose value is either 1 or 2. |
If the first character in R is #, then R is assumed to name an internal Magic Function; otherwise R is assumed to name a user-defined function/operator or a directly assigned function (e.g., f←+.×).
If L=2, then Z is a character matrix with as many rows as there are lines in the function (including the header), and as many columns as the longest line (including the header).
If L=1, then Z is either a simple character vector (for directly assigned functions), or a vector of character vectors (for user-defined functions/operators) with as many elements in Z as there are lines in the function (including the header), and each element of Z is a character vector representation of the corresponding line (or header) in the function.
For example,
f←+.×
⍴⎕←2 ⎕cr 'f'
+.×
1 3
⍴⎕←1 ⎕cr 'f'
+.×
3
2 ⎕cr '#MonIota'
Z←#MonIota R
Z←⊃∘.,/⍳¨R
1 ⎕cr '#MonIota'
Z←#MonIota R Z←⊃∘.,/⍳¨R
When this was written, the existing magic functions were named #MonIota, #DydIota, #MonDnShoe, #DydTilde, #MonRank, #DydRank, #Conform, #MonFMT, #Box, and #MonVR.
