wtools 0.2.20

Collection of general purpose tools for solving problems. Fundamentally extend the language without spoiling, so may be used solely or in conjunction with another module of such kind.
Documentation 
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/// Internal namespace.
pub( crate ) mod private
{
  use crate::protected::*;
  // use crate::abs::*;
  // use once_cell::sync::Lazy;
  // use std::sync::Mutex;
  // use dashmap::DashMap;
  // use std::sync::Arc;

  /// Registry of contexts.
  pub trait ContextInterface
  where
    Self :
      HasIdInterface +
      Make0 +
      fmt::Debug +
    ,
  {
    /// Type of changer of the context.
    type Changer : ChangerInterface;
    /// Get changer of the context.
    fn changer( &mut self ) -> Self::Changer;
  }

}

crate::mod_interface!
{

  prelude use ContextInterface;

}