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Diffstat (limited to 'docs/wiki_src/coding/meta-programming.md')
| -rw-r--r-- | docs/wiki_src/coding/meta-programming.md | 19 |
1 files changed, 13 insertions, 6 deletions
diff --git a/docs/wiki_src/coding/meta-programming.md b/docs/wiki_src/coding/meta-programming.md index 44f5ea2..5d1caa0 100644 --- a/docs/wiki_src/coding/meta-programming.md +++ b/docs/wiki_src/coding/meta-programming.md @@ -1,11 +1,10 @@ # Meta programming -TODO: more (blog) +Bruijn has a homoiconic meta encoding inspired by Lisp's quoting +feature. -Bruijn has a homoiconic meta encoding similar to Lisp's quoting feature. - -Blog post with more details: [Homoiconic self interpretation of lambda -calculus](https://text.marvinborner.de/2023-09-03-21.html). +Blog post with more details: [Metaprogramming and +self-interpretation](https://text.marvinborner.de/2023-09-03-21.html). ## Encoding @@ -52,7 +51,7 @@ add-two `[0 + (+2u)] # adds two using a reaching De Bruijn index add-two* [`(,0 + (+2u))] -:test (!(add-two* (+2u))) ((+4u)) +:test (!(add-two* `(+2u))) ((+4u)) ``` ## Meta library [`std/Meta`](/std/Meta.bruijn.html) @@ -69,4 +68,12 @@ Examples: # BLC length of meta term :test (length `[0]) ((+4u)) :test (length `[[1 1]]) ((+12u)) + +# self-modification +:test (lhs `(1 0) `0) (`(0 0)) +:test (rhs `(0 1) `0) (`(0 0)) +:test (swap `(1 0)) (`(0 1)) +:test (map inc `0) (`1) +:test (map (map inc) `[0]) (`[1]) +:test (map swap `[0 1]) (`[1 0]) ``` |