Friend function Global functions or other class member functions can be declared as friend functions, and the private functions of the class can be used inside the friend function Member
#in
Month: October 2021
Inheritance – How to use a superclass constructor in Qt Creator?
You may know that the classes in Qt Creator are part of the class.h and class.cpp files. Suppose we have two classes A (ah, a.cpp) and B(bh,b.cpp), B inherits A. When using B’s constructor, how t
Can’t find the symbol of the architecture i386 error iOS
There is no error in my code itself, but when I try to run, I get this error-cannot find the symbol for architecture i386 error iOS. I looked for the answer but nothing so far Help me. I am sure I
One article reads the distributed unique ID generation
Many large Internet companies have a large amount of data, and they all use sub-databases and tables, so after sub-databases, a unified unique ID is required for storage. This ID can be in incremen
Distributed – integrated NEO4J and Terracotta?
Has anyone tried or even considered using a clay solution (ie ehcache) to run/store Neo4J?
I know Neo4J has high availability, but this is just replication. What I really want is a distribute
Inheritance – Why is this class considered to be the ultimate?
I tried to inherit the following type, but the compiler says it is final.
class Dice(private var side: Int)
{
constructor(D: DiceTypesK): this(D.value) {}
}
class ExplodedDice(private val D:
Replication in distributed SOLR configuration
I’m trying to add replication for each slave in Solr cloud to make the entire cluster more reliable. Our idea is to spread one shard to On multiple machines, even if one of the machines fails, you
Distributed storage CEPH — Ceph OSD fault hard disk replacement (6)
Normal state:
Failure status:
1. Close the data migration of the ceph cluster:
The osd hard disk fails, and the status changes to down. After the time interval set by mod osd down
OOP – object-oriented design problem
I will use Java (or other OO language) to develop a Tic-Tac-Toe game. Now I have a picture of general design in my mind.
Categories:
Board class, With a two-dimensional integer array, 0 means
Inheritance – How to use multiple parent configuration functions with VAL in subclasses
Suppose I have a class Parent, which has four fields A, B, C, and D, so that C and D are optionally passed or initialized using the default implementation:
open class Parent(val a: A, v