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Add RwLockReadGuard::map for transforming guards to contain sub-borrows. #30834

Merged
merged 3 commits into from
Feb 3, 2016
Merged

Add RwLockReadGuard::map for transforming guards to contain sub-borrows. #30834

merged 3 commits into from
Feb 3, 2016

Commits on Jan 30, 2016

  1. Add guard map methods for transforming guards to contain sub-borrows. 

    This is very useful when the lock is synchronizing access to a data
structure and you would like to return or store guards which contain
references to data inside the data structure instead of the data structure
itself.
    @reem
    reem committed Jan 30, 2016
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  2. Change MutexGuard and RwLockWriteGuard to store &mut T not &UnsafeCel… 

    …l<T>

This centralizes the unsafety of converting from UnsafeCell<T> to &mut T.
    @reem
    reem committed Jan 30, 2016
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Commits on Feb 3, 2016

  1. Add issue number to guard map methods.

    @reem
    reem committed Feb 3, 2016
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