Joseph Ferano
a4c6b996ff
The trio the author decided on 2026-09-20 is now all built: def is CL's defparameter — its initialiser runs on every daemon re-run, unguarded, so an edited initialiser repaints the same storage on C-c C-c plus re-run — defonce (Clojure's name for CL's defvar, per the author) initialises once behind the .init~once. flag, and defconst stays the image. One parse arm reads both forms; the difference is Ast.reinit, carried to Tast.global's grerun. Emit.startup_plan gives a def no guard flag, and Check.check_global lifts every def initialiser — zero and literal included — into global/<n>, so the host's startup reaches it through the function cell and a re-evaluated def swaps it (Session's def_inits; Emit.redefinition declares the cell for a non-sibling target). The old defvar spelling is refused with the rename and both compiling spellings, and every program, test, doc and editor list is swept — except sand.flan, the author's live WIP, whose seven defvar lines are flagged in FIX.org and keep its three dependent tests red on this branch.
48 lines
1.6 KiB
Plaintext
48 lines
1.6 KiB
Plaintext
;;;; Globals, 2-D fixed arrays, places, pointers, casts and match — the
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;;;; milestone-2 surface calc-me does not reach.
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(defconst rows 3)
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(defconst cols 4)
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(defonce grid [rows [cols i32]])
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(defonce total i32)
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(defconst pal [4 u32] [10 20 30 40])
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(defstruct P [x i32 y i32])
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(defstruct Line [a P b P])
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(defn bump [p (Ptr P)] ()
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(set (.x p) (+ (.x p) 1)))
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(defn sum-grid [] i32
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(let [t 0 r 0]
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(while (< r rows)
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(let [c 0]
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(while (< c cols)
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(set t (+ t (at grid r c)))
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(set c (+ c 1))))
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(set r (+ r 1)))
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t))
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(defn find [n i32] (Option i32)
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(if (> n 0) (Some (* n 2)) None))
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(defn main [] i32
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(set (at grid 1 2) 7)
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(set (at grid 0 0) 5)
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(set total (sum-grid))
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(print total) (println "") ; 12
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(print (at pal 2)) (println "") ; 30
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(let [p (P {.x 1 .y 2})] ; :y omitted is zeroed
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(bump (addr p))
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(print (.x p)) (println "") ; 2
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(let [l (Line {.a p})]
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(print (.y (.a l))) (println ""))) ; 2
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(print (/ 7 2)) (println "") ; 3 integer divide
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(print (/ (f64 7) 2.0)) (println "") ; 3.5 float divide
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(print (match (find 21) (Some v) v None 0)) (println "") ; 42
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(print (match (find -1) (Some v) v None 99)) (println "") ; 99
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(let [q (addr total)]
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(print (deref q)) (println "") ; 12
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(set (deref q) 123)
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(print total) (println "")) ; 123
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0)
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