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Cannot make a static reference to the non-static method
...agmatic answer.
getText is a method of the Context abstract class and in order to call it, one needs an instance of it's subclass (Activity, Service, Application or other). The problem is, that the public static final variables are initialized before any instance of Context is created.
There are ...
Collections.emptyMap() vs new HashMap()
... then returning a view to the underlying collection makes perfect sense in order to make sure that a "bad" client does not accidentally modify collections owned by you. Returning an empty collection instead of null means that your client does not have to make a null check before using the collection...
Submitting the value of a disabled input field
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Addressing the original question, in order to pass the value during the form submission "disabled" property should be "false" instead of "true".
– Daniel Vukasovich
Aug 2 '17 at 21:26
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What is the difference between instanceof and Class.isAssignableFrom(…)?
...ation, it might be possible to get a different result (and maybe different order!) on a different JAVA version and/or platforms like Solaris, Mac or Linux.
the benchmark compares the performance of "is B an instance of A" when "B extends A" directly. If the class hierarchy is deeper and more complex...
What is a good Hash Function?
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Hsieh's hash function is awful, with an order of magnitude more collisions than we want. In particular, strings that differ only in the last 4 bytes can collide easily. If you have a 30 character string, that differ in the last 4 bytes, after 28 bytes have been pro...
How do I push a new local branch to a remote Git repository and track it too?
... I still needed to 'git branch --set-upstream-to origin/remote' in order for 'git status' to correctly report my branch status with respect to the remote branch.
– Paul Whipp
Jul 4 '14 at 1:17
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Join/Where with LINQ and Lambda
... the syntax relationships, but I put this document together for my team in order to make it a little simpler for them to understand. Hope this helps someone
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Fixing slow initial load for IIS
...er are served fast (restarting the app pool takes quite some time - in the order of seconds).
As far as I know, the timeout exists to save memory that other websites running in parallel on that machine might need. The price being that one time slow load time.
Besides the fact that the app pool get...
Split string to equal length substrings in Java
...egex, while requiring a few extra lines of code, will run somewhere on the order of 5x faster...
– drew moore
Sep 23 '14 at 14:17
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What does the comma operator , do?
...ressions either side of it into one, evaluating them both in left-to-right order. The value of the right-hand side is returned as the value of the whole expression.
(expr1, expr2) is like { expr1; expr2; } but you can use the result of expr2 in a function call or assignment.
It is often seen in f...