Programming VIP

C + + type conversion function: converts the type of the current class to other types The conversion constructor can convert other types to the current class type (for example, convert double type to Complex type), but it cannot convert the current class type to other types (for example, convert Complex type to double type). C + + provides a ...

Detailed explanation of C++ throw In the previous section, we talked about the process of C + + exception handling, specifically: Throw – > Try - > Catch Exceptions must be explicitly thrown before they can be detected and caught; If there is no explicit throw, even if there is an exception, it cannot be detected. In C + +, ...

1, Introduction 1. Concept Synchronization: synchronization refers to the sequential execution of the whole processing process. When each process is completed, the result is returned. Asynchrony: asynchronously invoking is just sending the called instruction, and the caller does not need to wait for the called method to be fully executed; ...

summary The last article talked about very common Set set . From the article, we know that Set is an ordered single column Set. Of course, it can solve many problems in life, but the elements in our Set are not all isolated single elements. Some of them will have a certain corresponding relationship (mapping relationship), such as the cor ...

Rust defines reference variables in four ways: 1. a: &T 2. a:&mut T 3. mut a:&T 4. mut a:&mut T The following describes these four writing methods respectively 1,a: &T This kind of reference variable means that the reference is immutable and the content pointed to by the reference cannot be modified. for instance: # ...

summary Akka is a library developed using Scala. It is based on event driven toolkit for building high concurrency projects Akka characteristics: Provide an asynchronous, non blocking, high-performance event driven programming modelThe built-in fault tolerance mechanism allows the Actor to recover or reset in case of errorLightweight ...

Functional programming brief introduction Function is a kind of encapsulation supported by Python built-in. We can decompose complex tasks into simple tasks by disassembling large pieces of code into functions and calling functions layer by layer. This decomposition can be called process oriented programming. Function is the basic unit ...

java What are strong reference, soft reference, weak reference and virtual reference? Strong reference (default support mode): when the memory is insufficient, the JVM starts garbage collection. For strongly referenced objects, even if there is OOM, the object will not be recycled and will not be collected.Soft reference: when the system me ...

Chisel combinational logic This section describes how to use Chisel components to implement combinatorial logic. This section will demonstrate how three basic Chisel types (UInt, unsigned integer; SInt, signed integer; Bool, Boolean) can be connected and operated. It should be noted that all Chisel variables are declared as Scala val. never ...

This article is an original article of Joshua 317. Please indicate: reprinted from Joshua 317 blog Using synchronized g keyword in Java to solve the problem of ticket overselling - Joshua 317's blog 1, Multithreading problem Let's first look at what happens to multi-threaded ticket selling without locking mechanism when synchronized is not us ...