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Uses for Optional
... provides a default for the second:
foo("bar", "baz");
foo("bar");
This does have limitations, but it's much nicer than either of the above.
Use cases #3 and #4, having an Optional in a class field or in a data structure, is considered a misuse of the API. First, it goes against the main design ...
How can I make SQL case sensitive string comparison on MySQL?
...oking for. I would it up higher if I could. A question though, what effect does this have on performance? I'm using it on a limited reporting thing, so it's not important in my case, but I am curious.
– adjwilli
Aug 25 '12 at 19:13
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Singleton: How should it be used
... don't need protection against this error, because that kind of error just doesn't happen. If it does, the correct response is to go home and sleep for 12-20 hours and hope you feel better.
If only one object is needed, simply create one instance. If one object should be globally accessible, make i...
Why does Java switch on contiguous ints appear to run faster with added cases?
...s job and compiles the bytecode into assembly, the tableswitch instruction does not always result in an array of pointers: sometimes the switch table is transformed into what looks like a lookupswitch (similar to an if/else if structure).
Decompiling the assembly generated by the JIT (hotspot JDK 1...
Why use def main()? [duplicate]
...ther file : import foo
In this case __name__ is foo, the code section does not get executed and does not print XXXX.
executed directly : python foo.py
When it is executed directly, __name__ is same as __main__ and the code in that section is executed and prints XXXX
One of the use ...
How to read a text file into a string variable and strip newlines?
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Yes, your version does not explicitly close the file, that will then be delayed until the garbage collector runs or the program terminates. The 'with' statement usually encapsulates some setup/teardown open/close actions.
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What does CultureInfo.InvariantCulture mean?
I have a string of text like so:
5 Answers
5
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Difference between Convert.ToString() and .ToString()
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Convert.ToString() handles null, while ToString() doesn't.
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Nested fragments disappear during transition animation
...that still allows for custom transition animations on child fragments, and doesn't require doing a bitmap cache of the layout.
Have a BaseFragment class that extends Fragment, and make all of your fragments extend that class (not just child fragments).
In that BaseFragment class, add the followin...
How to stop Gradle task execution in Android Studio?
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that does not help in case the gradle is hanging up, only killing the process of Android Studio and then restarting it helps
– Alexey Timokhin
Aug 11 '17 at 16:55
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