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Why does Stream not implement Iterable?
In Java 8 we have the class Stream<T> , which curiously have a method
9 Answers
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Why is Scala's immutable Set not covariant in its type?
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at http://www.scala-lang.org/node/9764 Martin Odersky writes:
"On the issue of sets, I believe the non-variance stems also from the implementations. Common sets are implemented as hashtables, which are non-variant arrays of the key type. I a...
ByteBuffer.allocate() vs. ByteBuffer.allocateDirect()
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Ron Hitches in his excellent book Java NIO seems to offer what I thought could be a good answer to your question:
Operating systems perform I/O
operations on memory areas. These
memory areas, as far as the operating
system is concerned, are contiguo...
What makes Scala's operator overloading “good”, but C++'s “bad”?
...nguages. Certainly, it was one feature specifically dropped when designing Java.
14 Answers
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SQL Client for Mac OS X that works with MS SQL Server [closed]
...swer.
Native Apps
SQLPro for MSSQL
Navicat
Valentina Studio
TablePlus
Java-Based
Oracle SQL Developer (free)
SQuirrel SQL (free, open source)
Razor SQL
DB Visualizer
DBeaver (free, open source)
SQL Workbench/J (free, open source)
JetBrains DataGrip
Metabase (free, open source)
Netbeans (free,...
Use of Initializers vs Constructors in Java
So I've been brushing up on my Java skills as of late and have found a few bits of functionality that I didn't know about previously. Static and Instance Initializers are two such techniques.
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Is there any performance reason to declare method parameters final in Java?
Is there any performance reason to declare method parameters final in Java?
5 Answers
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java: (String[])List.toArray() gives ClassCastException
... IntelliJ, I get a warning to use toArray(new String[0]) rather: "In older Java versions using pre-sized array was recommended as the reflection call which is necessary to create an array of proper size was quite slow. However since late updates of OpenJDK 6 this call was intrinsified, making the pe...
How to use the same C++ code for Android and iOS?
.... All shared code is in this segment. The highest level is regular Obj-C / Java / Kotlin code, no news here, the hard part is the middle layer.
The middle layer to iOS side is simple; you only need to configure your project to build using a variant of Obj-c know as Objective-C++ and it is all, you ...
Volatile Vs Atomic [duplicate]
... the truth of this assertion. Individual reads and writes to variables in Java that are not 8-bytes are always atomic. The volatile keyword does not make accesses to variables that may not have otherwise been atomic into accesses that are. It merely forces the processing environment to immediatel...