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Using -performSelector: vs. just calling the method
...ill kind of new to Objective-C and I'm wondering what is the difference between the following two statements?
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Error message “Forbidden You don't have permission to access / on this server” [closed]
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What are the differences between git remote prune, git prune, git fetch --prune, etc
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Difference between __str__ and __repr__?
What is the difference between __str__ and __repr__ in Python?
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Design patterns or best practices for shell scripts [closed]
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memory_get_peak_usage() with “real usage”
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Uses for Optional
...a I'm still not confident in is when to use Optional . I seem to swing between wanting to use it everywhere something may be null , and nowhere at all.
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