Closures/Value capture: Difference between revisions
Content added Content deleted
(added Nemerle) |
|||
| Line 447: | Line 447: | ||
=={{header|J}}== |
=={{header|J}}== |
||
===Explicit version=== |
|||
The natural way of implementing this in J is to define a function which produces a gerund of a constant function. |
The natural way of implementing this in J is to define a function which produces a gerund of a constant function. |
||
| Line 478: | Line 480: | ||
7 |
7 |
||
slist@.(?9) '' |
slist@.(?9) '' |
||
25</lang> |
|||
===Tacit (unorthodox) version=== |
|||
In J only adverbs and conjunctions (functionals) can produce verbs (functions)... Unless they are forced to cloak as verbs; in this instance, the rank conjunction (“) cloaks as a dyadic verb. |
|||
<lang j> ( VL=. (<@:((<'"')(0:`)(,^:)&_))"0@:(^&2)@:i. 10 ) NB. Producing a list of boxed anonymous verbs (functions) |
|||
┌───┬───┬───┬───┬────┬────┬────┬────┬────┬────┐ |
|||
│0"_│1"_│4"_│9"_│16"_│25"_│36"_│49"_│64"_│81"_│ |
|||
└───┴───┴───┴───┴────┴────┴────┴────┴────┴────┘ |
|||
>@:{&VL 5 NB. Evoking the 6th verb (function) |
|||
25"_ |
|||
>@:{&VL 5 '' NB. Invoking the 6th verb with a dummy argument ('') |
|||
25</lang> |
25</lang> |
||