lazy_static is used throughout the cookbook to store data that should be initialised only once. once_cell is more flexible and convenient than lazy_static. For example, it can be used for local variables.
Integrating once_cell into the standard library is in progress - issue.
I propose that the cookbook change to using once_cell instead. Once it has been integrated into the standard library, the imports alone can be changed. Until then the cookbook could reflect best practice, which is to use once_cell.
lazy_staticis used throughout the cookbook to store data that should be initialised only once.once_cellis more flexible and convenient thanlazy_static. For example, it can be used for local variables.Integrating
once_cellinto the standard library is in progress - issue.I propose that the cookbook change to using
once_cellinstead. Once it has been integrated into the standard library, the imports alone can be changed. Until then the cookbook could reflect best practice, which is to useonce_cell.