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.
52 lines
1.3 KiB
Plaintext
52 lines
1.3 KiB
Plaintext
;; Which of prelude.ml's per-type families collapse as they are written, and
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;; which need their signature changed. Nothing here is installed in the
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;; prelude; it is the same bodies, over $t, checked and run.
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(defn keep [s [$t] keep? (Fn [$t] bool)] (Vec $t)
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(let [v (vec-new t)]
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(dotimes [i (len s)]
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(when (keep? (at s i))
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(push v (at s i))))
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v))
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(defn apply! [s [$t] f (Fn [$t] $t)] ()
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(dotimes [i (len s)]
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(set (at s i) (f (at s i)))))
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(defn fold [s [$t] init $t f (Fn [$t $t] $t)] t
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(let [acc init]
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(dotimes [i (len s)]
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(set acc (f acc (at s i))))
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acc))
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(defn flip! [s [$t]] ()
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(let [i 0
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j (- (len s) 1)]
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(while (< i j)
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(let [tmp (at s i)]
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(set (at s i) (at s j))
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(set (at s j) tmp))
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(set i (+ i 1))
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(set j (- j 1)))))
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(defonce ns [5 i32])
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(defonce fs [5 f32])
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(defn main [] ()
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(let [xs (slice ns 0 5)
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ys (slice fs 0 5)]
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(dotimes [i 5]
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(set (at xs i) (+ i 1))
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(set (at ys i) (f32 (* 2 (+ i 1)))))
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(apply! xs (fn [x] (* x 10)))
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(apply! ys (fn [x] (* x (f32 2))))
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(flip! xs)
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(flip! ys)
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(println (fold xs 0 (fn [a b] (+ a b))))
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(println (fold ys (f32 0) (fn [a b] (+ a b))))
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(let [evens (keep xs (fn [x] (= (% x 20) 0)))]
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(println (len evens))
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(free evens))
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(println (at xs 0))
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(println (at ys 0))))
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