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-rw-r--r--gem/ex3.lua15
1 files changed, 0 insertions, 15 deletions
diff --git a/gem/ex3.lua b/gem/ex3.lua
deleted file mode 100644
index a43fefa..0000000
--- a/gem/ex3.lua
+++ /dev/null
@@ -1,15 +0,0 @@
1local function chainpair(f1, f2)
2 return function(chunk)
3 local ret = f2(f1(chunk))
4 if chunk then return ret
5 else return (ret or "") .. (f2() or "") end
6 end
7end
8
9function filter.chain(...)
10 local f = select(1, ...)
11 for i = 2, select('#', ...) do
12 f = chainpair(f, select(i, ...))
13 end
14 return f
15end