df3[10, :A] = missing
df3[15, :B] = missing
df3[15, :C] = missing
即使NA也不行.
我收到了一个错误
MethodError:Missings.Missing
convert类型的对象不能是Int64类型的对象这可能是由于对构造函数Int64(...)的调用引起的,因为类型构造函数会回退到转换方法.Stacktrace:[1] setindex!(:: Array {Int64,1},:: Missings.Missing,:: Int64)at ./array.jl:583 [2] insert_single_entry!(:: DataFrames.DataFrame,:: Missings .Missing,:: Int64,:: Symbol)/home/jrun/.julia/v0.6/DataFrames/src/dataframe/dataframe.jl:361 [3] setindex!(:: DataFrames.DataFrame,:: Missings .Missing,:: Int64,:: Symbol)在/home/jrun/.julia/v0.6/DataFrames/src/dataframe/dataframe.jl:448 [4] include_string(:: String,:: String)at. /loading.jl:522