我也需要在导航栏中添加一个下拉菜单,但他不想下拉菜单,我看到有人在:href =“#”上进行了更改,将其更改为href =“ / posts”,但对他有用不适合我,如果有帮助,我正在使用Bootstrap 4.4.1。谢谢大家。
MethodError: Cannot `convert` an object of type DataFrames.DataFrameRow{DataFrames.DataFrame,DataFrames.SubIndex{DataFrames.Index,UnitRange{Int64},UnitRange{Int64}}} to an object of type Float64 Closest candidates are: convert(::Type{T}, !Matched::T) where T<:Number at number.jl:6 convert(::Type{T}, !Matched::Number) where T<:Number at number.jl:7 convert(::Type{T}, !Matched::Base.TwicePrecision) where T<:Number at twiceprecision.jl:250 ... Stacktrace: [1] setindex!(::Array{Float64,2}, ::DataFrames.DataFrameRow{DataFrames.DataFrame,DataFrames.SubIndex{DataFrames.Index,UnitRange{Int64},UnitRange{Int64}}}, ::Int64) at .\array.jl:825 [2] top-level scope at .\In[47]:9
aria-haspopup =“ true” aria-expanded =“ false” data-target =“#my-target”> 落下 行动 另一个动作 这里还有其他