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Is null check needed before calling instanceof?
Will null instanceof SomeClass return false or throw a NullPointerException ?
7 Answers
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std::shared_ptr of this
...of call, but in a typical usage pattern, i.e. something like shared_ptr<Foo> p(new Foo());, shared_ptr assumes ownership of the object only after it is fully constructed. It is possible to circumvent this by creating shared_ptr in constructor initialized with this and storing it somewhere non...
How can I position my div at the bottom of its container?
...-- Other elements here -->
<div id="copyright">
Copyright Foo web designs
</div>
</div>
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How do I mock an open used in a with statement (using the Mock framework in Python)?
... with patch('{}.open'.format(__name__), m, create=True):
... with open('foo', 'w') as h:
... h.write('some stuff')
>>> m.assert_called_once_with('foo', 'w')
>>> handle = m()
>>> handle.write.assert_called_once_with('some stuff')
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How to use SharedPreferences in Android to store, fetch and edit values [closed]
I want to store a time value and need to retrieve and edit it. How can I use SharedPreferences to do this?
31 Answers
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When should an IllegalArgumentException be thrown?
... I think "reasonably expected to recover" is weaselly. Any operation foo(data) could have happened as part of for(Data data : list) foo(data); in which the caller could want as many to succeed as possible even though some data are malformed. Includes programmatic errors too, if my application...
Is there a simple way to delete a list element by value?
I want to remove a value from a list if it exists in the list (which it may not).
21 Answers
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How do I uninstall nodejs installed from pkg (Mac OS X)?
I installed NodeJS from pkg file on my Mac. Now I need to uninstall it. Tell me please how to do it.
I tried to remove files from this list:
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How do I initialize a byte array in Java?
I have to store some constant values (UUIDs) in byte array form in java, and I'm wondering what the best way to initialize those static arrays would be. This is how I'm currently doing it, but I feel like there must be a better way.
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fatal: early EOF fatal: index-pack failed
I have googled and found many solutions but none work for me.
31 Answers
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