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| author | Kartik K. Agaram <vc@akkartik.com> | 2022-03-27 10:53:41 -0700 |
|---|---|---|
| committer | Kartik K. Agaram <vc@akkartik.com> | 2022-03-27 10:53:41 -0700 |
| commit | dd7da2c62ae1f53069e5bf07ea92861218da0c41 (patch) | |
| tree | 113f9d3ba7093c18a70535b099546a8603cc5209 /graphviz.tlv | |
| parent | 455870d1147e1f3e2249b9462ccd7ddd945dcd10 (diff) | |
| download | teliva-dd7da2c62ae1f53069e5bf07ea92861218da0c41.tar.gz | |
helper: count
Diffstat (limited to 'graphviz.tlv')
| -rw-r--r-- | graphviz.tlv | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/graphviz.tlv b/graphviz.tlv index 0bdd67b..18fb7e0 100644 --- a/graphviz.tlv +++ b/graphviz.tlv @@ -236,6 +236,7 @@ >end - __teliva_timestamp: original count_letters: + >-- TODO: handle unicode >function count_letters(s) > local result = {} > for i=1,s:len() do @@ -249,6 +250,21 @@ > return result >end - __teliva_timestamp: original + count: + >-- turn an array of elements into a map from elements to their frequency + >-- analogous to count_letters for non-strings + >function count(a) + > local result = {} + > for i, v in ipairs(a) do + > if result[v] == nil then + > result[v] = 1 + > else + > result[v] = result[v] + 1 + > end + > end + > return result + >end +- __teliva_timestamp: original union: >function union(a, b) > for k, v in pairs(b) do |