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How do I clone a generic List in Java?
I have an ArrayList<String> that I'd like to return a copy of. ArrayList has a clone method which has the following signature:
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Does .asSet(…) exist in any API?
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Now with Java 8 you can do this without need of third-party framework:
Set<String> set = Stream.of("a","b","c").collect(Collectors.toSet());
See Collectors.
Enjoy!
shar...
What are the differences between SML and OCaml? [closed]
...sociopolitical. I've tried to put more important differences first.
SML is a language with a definition and a standard. It is stable (and in fact has been frozen so it cannot evolve). Objective Caml is an implementation controlled by a small group at INRIA. It continues to evolve. (IMO the evo...
Determine device (iPhone, iPod Touch) with iOS
Is there a way to determine the device running an application. I want to distinguish between iPhone and iPod Touch , if possible.
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When should I use a table variable vs temporary table in sql server?
...ng more details in table variable. It says that temp tables are always on disk, and table variables are in memory, that is to say, the performance of table variable is better than temp table because table variable uses less IO operations than temp table.
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Getting the difference between two sets
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Try this
test2.removeAll(test1);
Set#removeAll
Removes from this set all of its elements that are contained in the specified collection (optional operation). If the specified collection is also a set, this operation effect...
How do I use a custom Serializer with Jackson?
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As mentioned, @JsonValue is a good way. But if you don't mind a custom serializer, there's no need to write one for Item but rather one for User -- if so, it'd be as simple as:
public void serialize(Item value, JsonGenerator jgen,
SerializerProv...
Submit HTML form on self page
...on' attribute to self-submit a form
<form>
Actually, the Form Submission subsection of the current HTML5 draft does not allow action="" (empty attribute). It is against the specification.
From this other Stack Overflow answer.
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vertical-align with Bootstrap 3
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This answer presents a hack, but I would highly recommend you to use flexbox (as stated in @Haschem answer), since it's now supported everywhere.
Demos link:
- Bootstrap 3
- Bootstrap 4 alpha 6
You still can use...
Is there an easy way to request a URL in python and NOT follow redirects?
...d then use build_opener to override the default HTTPRedirectHandler, but this seems like a lot of (relatively complicated) work to do what seems like it should be pretty simple.
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