help wantednew feature
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説明
It'd be nice if you could tell CSV to write a types header line that would make it easier to read back into julia.
a,b,c,d
DateTime,String,Float64,MyType
...
Reading a value back could just always be parse(eval(Symbol(col_type)), x). The eval isn't great, but it's restricted to only symbols.
This approach would put the onus on package developers to appropriately define parse methods for their types, rather than the person loading the CSV.