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How to compare arrays in C#? [duplicate]
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AMing solution handle null cases (and is more 'symmetric').
– Orace
Nov 25 '14 at 8:51
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How to hide keyboard in swift on pressing return key?
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Mimicking sets in JavaScript?
...h is small code that implements the basics of a set object. It also has a more feature rich set object and several derivations including a Dictionary (let's you store/retrieve a value for each key) and an ObjectSet (let's you keep a set of objects - either JS objects or DOM objects where you either...
Should I pass an std::function by const-reference?
...e are forced to copy the std::function.
That store makes passing by value more optimal. If there is any possibility you are storing a copy of the std::function, pass by value. Otherwise, either way is roughly equivalent: the only downside to by-value is if you are taking the same bulky std::funct...
How to create a zip archive with PowerShell?
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com.jcraft.jsch.JSchException: UnknownHostKey
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Adding a new entry to the PATH variable in ZSH
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How does IPython's magic %paste work?
... In Ipython 5 you can just paste the code. Don't need %paste anymore. Read this answer.
– Levon
Jul 17 '16 at 9:19
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Uses for Optional
...atches use case #1 in the OP's question. Although, absence of a value is a more precise formulation than null since something like IntStream.findFirst could never return null.
For use case #2, passing an optional argument to a method, this could be made to work, but it's rather clumsy. Suppose you ...