Crate unnest 

Early break/continue/return if an optional expression evaluates to None.

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Documentation and specification

Macros

ok_or_break

Break if a Result expression evaluates to Err.

ok_or_continue

Continue if a Result expression evaluates to Err.

ok_or_return

Return if a Result expression evaluates to Err.

ok_or_return_err

Return the error if a Result expression evaluates to Err.

ok_or_return_with

Return a residual value if a Result expression evaluates to Err.

some_or_break

Break if an optional expression evaluates to None.

some_or_continue

Continue if an optional expression evaluates to None.

some_or_return

Return if an optional expression evaluates to None.

some_or_return_with

Return a residual value if an optional expression evaluates to None.