Lazy Functions

I imagine compiler supported lazy functions that memorizes last value of return , then never computes it again until an input variable changes , maybe keeps states of input vars. This may help to reduce computation , when reads are more frequent than writes .  A flag could be set if there is any write to specified vars

Fetih 96 Space Game J2ME and Source Code

https://sourceforge.net/projects/fetih96/

D[i][j][k]stra's Algorithm

His name already gives idea about algorithm