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Add __len metamethod to PackTable #1065

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Add __len metamethod to PackTable #1065

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4 changes: 4 additions & 0 deletions spec/cli/gen_spec.lua
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Original file line number Diff line number Diff line change
Expand Up @@ -298,6 +298,7 @@ describe("tl gen", function()
local t = {1, 2, 3, 4}
print(table.unpack(t))
local t2 = table.pack(1, 2, "any")
local tcount = #t2
local n = 42
local maxi = math.maxinteger
local mini = math.mininteger
Expand All @@ -317,6 +318,7 @@ describe("tl gen", function()
local t = { 1, 2, 3, 4 }
print(table.unpack(t))
local t2 = table.pack(1, 2, "any")
local tcount = t2.n
local n = 42
local maxi = math.maxinteger
local mini = math.mininteger
Expand All @@ -336,6 +338,7 @@ describe("tl gen", function()
local t = { 1, 2, 3, 4 }
print(_tl_table_unpack(t))
local t2 = _tl_table_pack(1, 2, "any")
local tcount = t2.n
local n = 42
local maxi = _tl_math_maxinteger
local mini = _tl_math_mininteger
Expand All @@ -355,6 +358,7 @@ describe("tl gen", function()
local t = { 1, 2, 3, 4 }
print(_tl_table_unpack(t))
local t2 = _tl_table_pack(1, 2, "any")
local tcount = t2.n
local n = 42
local maxi = _tl_math_maxinteger
local mini = _tl_math_mininteger
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5 changes: 4 additions & 1 deletion teal/default/stdlib.d.tl
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Original file line number Diff line number Diff line change
Expand Up @@ -310,6 +310,9 @@ global record table
is {A}

n: integer
metamethod __len: function(self): integer = macroexp(self): integer
return self.n
end
end

concat: function({(string | number)}, ? string, ? integer, ? integer): string
Expand All @@ -320,7 +323,7 @@ global record table
move: function<A>({A}, integer, integer, integer, ? {A}): {A}

pack: function<T>(T...): PackTable<T> --[[needs_compat]]
pack: function(any...): {any:any} --[[needs_compat]]
pack: function(any...): PackTable<any> --[[needs_compat]]

remove: function<A>({A}, ? integer): A
sort: function<A>({A}, ? SortFunction<A>)
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64 changes: 32 additions & 32 deletions teal/precompiled/default_env.lua
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64 changes: 32 additions & 32 deletions tl.lua
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