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authorchai <chaifix@163.com>2021-10-20 13:40:34 +0800
committerchai <chaifix@163.com>2021-10-20 13:40:34 +0800
commitff0f488c97fe8b554b909a0057cebc4c860eac8f (patch)
tree4e47262b52ffce7e9cfeaaeeab46371243bcaa78 /ThirdParty/luasocket/gem/ex3.lua
parentdde719dd575090b36aaa3ad85bb3cabf33f36c5a (diff)
+luasocket src
Diffstat (limited to 'ThirdParty/luasocket/gem/ex3.lua')
-rw-r--r--ThirdParty/luasocket/gem/ex3.lua15
1 files changed, 15 insertions, 0 deletions
diff --git a/ThirdParty/luasocket/gem/ex3.lua b/ThirdParty/luasocket/gem/ex3.lua
new file mode 100644
index 0000000..a43fefa
--- /dev/null
+++ b/ThirdParty/luasocket/gem/ex3.lua
@@ -0,0 +1,15 @@
+local function chainpair(f1, f2)
+ return function(chunk)
+ local ret = f2(f1(chunk))
+ if chunk then return ret
+ else return (ret or "") .. (f2() or "") end
+ end
+end
+
+function filter.chain(...)
+ local f = select(1, ...)
+ for i = 2, select('#', ...) do
+ f = chainpair(f, select(i, ...))
+ end
+ return f
+end