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我剛開始使用朱莉婭。據我的理解,Julia允許你在一行中聲明多個for循環。茱莉亞雙循環,循環詞典
例如,這樣的:
for i = 1:2, j = [-1,-2]
println((i, j))
end
會導致這樣的:
(1,-1)
(1,-2)
(2,-1)
(2,-2)
我現在做類似的東西,但同時遍歷字典。我聲明如下:
rename = function(x)
x["num"] = -x["num"]
x
end
players1 = [["num" => 1],["num" => 2]]
players2 = map(rename, copy(players1)) # = [["num" => -1],["num" => -2]]
奇怪的是,對我來說,當我這樣做:
for i=players1, j=players2
println(i, j)
end
爲什麼我沒有得到這個輸出?
["num"=>1]["num"=>-1]
["num"=>1]["num"=>-2]
["num"=>2]["num"=>-1]
["num"=>2]["num"=>-2]