simple_file_cache

SimpleFileCache writes a ruby object to a binary file so that it can be retrieved later from the disk rather than recomputed from scratch. It defines a single method #load_or_recompute that receives a file path and a block. If the file exists and is recent (last changed today), it returns the file contents read with Marshal#load. Otherwise, it executesthe block, saves its return value with Marshal#dump and returns the new data.