Loading Big files using fromMatrixMarket (Memory Performance)

[LsKoder]

I'm trying to load big matrix as https://sparse.tamu.edu/Janna/Flan_1565

Actually, it's necessary to read entire file on memory (several GBs) and pass it as string argument to fromMatrixMarket() function.

It could be better to pass the file path, proceeding to read file row by row (improving memory usage).

[vkostyukov]

Hey @LsKoder! Thanks for the issue! Any chance you want to work on a fix?

[vkostyukov]

Fixed in #297.