tion Release 1.0a1 Kivy Team and other contributors Feb 10, 2019 Contents 1 Installation 3 1.1 Installation on GNU/Linux distributions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .…

9.13 var concat = function(x, y) { return x + y; }; map2(concat, ['a', 'b'], ['1', '2']); // => ['a1', 'b2'] mapN(fn, n) Returns an array obtained by mapping the function fn over the integers [0,1,…

f) <*> (Just a) = Just (f a) _ <*> _ = Nothing 按照 <*> 的实现，我们可以像下面这样使用它，其中函数应用 [| f a1 … an |] 会被翻译成 pure f <*> a1 <*> … <*> an： m_add' : Maybe Int -> Maybe Int -> Maybe Int m_add' x y = [| x + y |]…

elease Notes This could result in bad plans for queries like ... from a left join b on a.a1 = b.b1 where a.a1 = 42 ... • Improve optimizer’s handling of long IN lists (Tom) This change avoids wasti…

oo’) AS t(a int, b text, c text[]); a | b | c ----+---+--------------- 0 | a | {a0,b0,c0} 1 | b | {a1,b1,c1} 2 | c | {a2,b2,c2} 2174 dblink_connect 3 | d | {a3,b3,c3} 4 | e | {a4,b4,c4} 5 | f | {a5…

nt, b text, c text[]); a | b | c ----+---+--------------- 0 | a | {a0,b0,c0} 1 | b | {a1,b1,c1} 2 | c | {a2,b2,c2} 3 | d | {a3,b3,c3} 4 | e | {a4,b4,c4} 5 | f | {a5,b5,c5} 6 | g…