using MAT
matwrite("foo.mat", Dict("now" => now()))
results in
ERROR: This is the write function for CompositeKind, but the input doesn't fit
Stacktrace:
[1] m_write at /home/reb/.julia/v0.6/MAT/src/MAT_HDF5.jl:514 [inlined]
[2] write(::MAT.MAT_HDF5.MatlabHDF5File, ::String, ::DateTime) at /home/reb/.julia/v0.6/MAT/src/MAT_HDF5.jl:530
[3] matwrite(::String, ::Dict{String,DateTime}) at /home/reb/.julia/v0.6/MAT/src/MAT.jl:156
results in