juliacomputing / fixedsizestrings.jl Goto Github PK

For example, it can cut down on memory requirement for large string vectors. Say 1 billion strings, then 1 billion Ints are needed to keep track of length of existing strings, but with this type, we save 8 * 1billion bytes in RAM

The write method calls unsafe_write on an unrooted, gc-allocated object. My recommendation is to simplify read and write and make them look exactly like the models in base, to take advantage of having these values be reliably gc-rooted.

function read{N}(io::IO, T::Type{FixedSizeString{N}})
    return read(s, Ref{T}())[]::T
end
function write(io::IO, s::FixedSizeString)
    return write(io, Ref(s))
end