france was the last to be derationed after ww2.
france was the last to be derationed after ww2.
what was the last to be derationed after ww2?
france
Na
Na
dynamic variables can be used to extend the execution context with additional context information which is implicitly passed from function to function without having to appear as an extra function parameter. this is especially useful when the control transfer has to pass through layers of unrelated code, which simply cannot be extended with extra parameters to pass the additional data. a situation like this usually calls for a global variable. that global variable must be saved and restored, so that the scheme doesn't break under recursion: dynamic variable rebinding takes care of this. and that variable must be made thread-local (or else a big mutex must be used) so the scheme doesn't break under threads: dynamic scope implementations can take care of this also.
common lisp