Materialise: Difference between revisions
(Created page with "{{Built-in|Materialise|⌷}} is a monadic primitive function which tries to cast the argument (which can be any object) into an APL array. If the argument is alrea...") |
m (Text replacement - "</source>" to "</syntaxhighlight>") |
||
| Line 1: | Line 1: | ||
{{Built-in|Materialise|⌷}} is a [[monadic]] [[primitive function]] which tries to cast the [[argument]] (which can be any object) into an APL array. If the argument is already an array, it is returned unmodified. It is only available in [[Dyalog APL]], which supports classes and .NET objects. Materialise shares its [[glyph]] <source lang=apl inline>⌷</ | {{Built-in|Materialise|⌷}} is a [[monadic]] [[primitive function]] which tries to cast the [[argument]] (which can be any object) into an APL array. If the argument is already an array, it is returned unmodified. It is only available in [[Dyalog APL]], which supports classes and .NET objects. Materialise shares its [[glyph]] <source lang=apl inline>⌷</syntaxhighlight> with [[Index (function)|Index]]. | ||
== Examples == | == Examples == | ||
| Line 14: | Line 14: | ||
:EndProperty | :EndProperty | ||
:EndClass | :EndClass | ||
</ | </syntaxhighlight>{{Works in|[[Dyalog APL]]}} | ||
If one property is declared as default, Materialise returns the value of the default property. | If one property is declared as default, Materialise returns the value of the default property. | ||
| Line 25: | Line 25: | ||
cl.thing ⍝ Actual effect of the line above | cl.thing ⍝ Actual effect of the line above | ||
3 1 4 1 4 | 3 1 4 1 4 | ||
</ | </syntaxhighlight>{{Works in|[[Dyalog APL]]}} | ||
Materialise can also be used on a .NET collection, which returns the underlying array of data. | Materialise can also be used on a .NET collection, which returns the underlying array of data. | ||
| Line 35: | Line 35: | ||
⍴⌷ba ⍝ but it is actually a container of 5 values | ⍴⌷ba ⍝ but it is actually a container of 5 values | ||
5 | 5 | ||
</ | </syntaxhighlight>{{Works in|[[Dyalog APL]]}} | ||
Materialise is the same as [[Identity]] for APL arrays. | Materialise is the same as [[Identity]] for APL arrays. | ||
| Line 42: | Line 42: | ||
(⌷≡⊢) 1 2 3 4 5 | (⌷≡⊢) 1 2 3 4 5 | ||
1 | 1 | ||
</ | </syntaxhighlight>{{Works in|[[Dyalog APL]]}} | ||
== External links == | == External links == | ||
Revision as of 20:57, 10 September 2022
⌷
|
Materialise (⌷) is a monadic primitive function which tries to cast the argument (which can be any object) into an APL array. If the argument is already an array, it is returned unmodified. It is only available in Dyalog APL, which supports classes and .NET objects. Materialise shares its glyph <source lang=apl inline>⌷</syntaxhighlight> with Index.
Examples
Dyalog APL allows the user to define a class, which looks like the following:
<source lang=apl>
- Class cl
:Property Default thing
:Access Public Shared
∇ r←get
r←3 1 4 1 4
∇
:EndProperty
- EndClass
</syntaxhighlight>
If one property is declared as default, Materialise returns the value of the default property.
<source lang=apl>
⊢cl ⍝ It is an object
- .cl
⌷cl ⍝ ⌷ casts cl to an array by getting the default property
3 1 4 1 4
cl.thing ⍝ Actual effect of the line above
3 1 4 1 4
</syntaxhighlight>
Materialise can also be used on a .NET collection, which returns the underlying array of data.
<source lang=apl>
ba←⎕NEW System.Collections.BitArray(⊂1 0 1 1 0)
⍬≡⍴ba ⍝ ba itself is a scalar object
1
⍴⌷ba ⍝ but it is actually a container of 5 values
5
</syntaxhighlight>
Materialise is the same as Identity for APL arrays.
<source lang=apl>
(⌷≡⊢) 1 2 3 4 5
1
</syntaxhighlight>
External links
Tutorials
Documentation