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General functional-style helpers for disttrial.
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Get a definite value from an optional value.
@param default: The value to return if the optional value is missing.
@param optional: The optional value to return if it exists.
� )r r s �@/usr/lib/python3/dist-packages/twisted/trial/_dist/functional.py� fromOptionalr s � � ���� �O� � condition�xsc # �6 K � |D ] } | |� r|�� � y y�w)z�
:return: An iterable over C{xs} that stops when C{condition} returns
``False`` based on the value of iterated C{xs}.
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Wait for one action to complete and then another.
If either action fails, failure is propagated. If the first action fails,
the second action is not waited on.
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Create a function like another but with the order of the first two
arguments flipped.
c � �� �|| � S �Nr )r r r s �r �gzflip.<locals>.g< s �� ���A�w�r �r )r r$ s ` r �flipr& 6 s" �� � �1�X�� ��
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Create a function that calls one function with an argument and then
another function with the result of the first function.
c � �� � �| � � S r# r )r r' r( s ��r r$ zcompose.<locals>.gI s �� � �"�Q�%�y�r r% )r' r( r$ s `` r �composer+ C s. �� � �2�Y�
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discardResult� predicate�actionc � �D K � |� � d{ ��� } | |� s|S �7 ��w)z�
Call a function repeatedly until its result fails to satisfy a predicate.
@param predicate: The check to apply.
@param action: The function to call.
@return: The result of C{action} which did not satisfy C{predicate}.
Nr )r- r. �results r � iterateWhiler1 X s) � �� � � �x� ���� ��M� � �s � � � c �( � �� d�dt f�� fd� }|S )z�
Wrap a function with another that automatically passes an integer counter
of the number of calls that have gone through the wrapper.
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