我的问题源于我有一个 DataFrame 值字典(带有兼容的列),我想把vcat
它们放在一起。
考虑string
函数如何接受任意数量的字符串参数:
string("Fish ", "and ", "chips ") == "Fish and chips "
(is true
)。我有一本字典
myLunch = Dict(:a => "Fish ", :b => "and ", :c => "chips ")
,我想解压缩字典并将其值传递给string
就好像它们是参数一样。
string( unpack(myLunch)) == "Fish and chips "
类似地,我的数据可能存储在一个数组中lunch = ["Fish ", "and ", "chips "]
,我想将数组的内容作为参数传递:
string( unpack(lunch) )
你怎么能这样做?