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ParameterContextDetails@BeforeClassStaticExecuted when the class is first created@BeforeInstanceExecuted before each test in the class@TestInstanceShould be declared each method to test@AfterInstanceExecuted after each test in the class@AfterClassStaticExecuted before destruction of the class Exa...

Process that runs package.json’s main script is called the main process. The main process creates web pages by creating BrowserWindow instances. Each web page in Electron runs in its own process, which is called the renderer process. The main process manages all web pages and their corresponding r...

Not everything that starts with a backslash is an escape sequence. Many characters are just not useful to escape sequences, and will simply cause a preceding backslash to be ignored. "\H\e\l\l\o" === "Hello" // true On the other hand, some characters like "u" and...

This should help you understand a "Null Pointer Exception" -- one gets one of those because an object reference is null, but the program code expects the program to use something in that object reference. However, that deserves its own topic...

This topic describes a number of "pitfalls" (i.e. mistakes that novice java programmers make) that relate to Java application performance. This topic describes some "micro" Java coding practices that are inefficient. In most cases, the inefficiencies are relatively small, ...

start(itr) next(itr, s) done(itr, s) take(itr, n) drop(itr, n) cycle(itr) Base.product(xs, ys) ParameterDetailsForAll FunctionsitrThe iterable to operate on.Fornext and donesAn iterator state describing the current position of the iteration.Fortake and dropnThe number of elements to ta...

immutable MyType; field; field; end type MyType; field; field; end Types are key to Julia's performance. An important idea for performance is type stability, which occurs when the type a function returns only depends on the types, not the values, of its arguments.

BufferedImage.getGraphics() always returns Graphics2D. Using a VolatileImage may significantly improve the speed of drawing operations, but also has its drawbacks: its contents may be lost at any moment and they may have to be redrawn from scratch.

[time [-p]] [!] command1 [ | or |& command2 ] … A pipeline is a sequence of simple commands separated by one of the control operators | or |& (source). | connects the output of command1 to the input of command2. |& connects standard output and standard error of command1 to the...

In this topic we propose a simple method to correctly design simple digital circuits with VHDL. The method is based on graphical block diagrams and an easy-to-remember principle: Think hardware first, code VHDL next It is intended for beginners in digital hardware design using VHDL, with a limited...