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| author | Leah Neukirchen <leah@vuxu.org> | 2022-11-26 18:16:38 +0100 |
|---|---|---|
| committer | Leah Neukirchen <leah@vuxu.org> | 2022-11-26 18:16:38 +0100 |
| commit | 9376d7131a9f2a8df55a556110304bd9a2e39c40 (patch) | |
| tree | f4598ed4a6c49177145e9018d678863094e7180c /mew.scm | |
| parent | 2a0f96114fb75ecf6975812a041e96f7b9d161c5 (diff) | |
| download | mew-9376d7131a9f2a8df55a556110304bd9a2e39c40.tar.gz mew-9376d7131a9f2a8df55a556110304bd9a2e39c40.tar.xz mew-9376d7131a9f2a8df55a556110304bd9a2e39c40.zip | |
add sample
Diffstat (limited to 'mew.scm')
| -rw-r--r-- | mew.scm | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/mew.scm b/mew.scm index c5f1f31..caed21a 100644 --- a/mew.scm +++ b/mew.scm @@ -17,7 +17,7 @@ odometer one-of op op* per prn proj puts rand range rep - scan scan-right sing? search seq set set-at shuffle str slurp + sample scan scan-right sing? search seq set set-at shuffle str slurp tally-accumulator tbl time while uniq-accumulator unlist until @@ -412,6 +412,18 @@ (loop (dec i))))) v) + (define (sample o) + (if (hash-table? o) + (esc ret + (let ((n (rand (hash-table-size o))) + (i 0)) + (hash-table-for-each o + (lambda (k v) + (if (= i n) + (ret (cons k v)) + (set! i (inc i))))))) + (get o (rand (len o))))) + (define range (case-lambda (() (make-range-generator 0 +inf.0 1)) |