J2se 1.5 In a nutshell Chinese Version
2004-03-22 CLICK: 104
J2se 1.5 In a nutshell Chinese Version
Article[H2] j2se 1.5 In a nutshell [/H2]--------------------------------------------------------------------------------According to the Translator's note: the understanding of the new featu
1. What's delegate in C #?A delegate is an object, that knows how to call a method.A delegate type defines the kind of method that delegate instances can call. Specifically,It defines the method ' return type and its parameter types.The Followingdefines a delegate type called Transformer:delegate int Transformer (int x);Transformer is compatible with any method with an int return type and a singleint parameter, such as this:static int Square (int x) {return x * x;}Assigning a method to a delegat
-id of this router in the Hello package
Exstart: The initial state of information exchange, determine the master-slave relationship, who first initiate the exchange, determine the DD message sequence number.
Exchange: Information exchange status, the interaction of DD messages
Loading: Information loading status, exchanging LSA information via LSR, LSU
Full: Fully contiguous state
X. ROUTER-ID: Manual designation is the highest priority, if not manually specified, the active
locked.
Locking an object[] doesn ' t lock the individual objects.Locks a object[] array, and cannot lock every object within the array.
Primitives is not mutable, so they can ' t (and don ' t need to) be locked.Native types are immutable, so they cannot (and do not need to) lock.
Synchronized can ' t appear on a method declaration in an interface.Synchronization cannot appear on the method of an interface.
Inner classes is just syntactic sugar, so locks on Inner classes has n
distinguish between these, kinds of equality. One of the "identical" when talking about equality of references and the word "equal" when Talking about a distinct objects that has the same content. To test-nonidentical objects for equality, pass one of the them to the Equals () method of the other:
All objects inherit a Equals () method (from Object), but the default implementa‐tion simply uses = = to test for identity of references, not equality of content. A classThat wants-to-allow ob
to appear and replace, in the programming in fact many places are embodied, most oftenSee mapI don't quite understand why I wrote it until I saw the author's description in the book.Synthesis and aggregation principles, in fact, better words are combinatorial and aggregation, and now many concepts of the boundaries are actually not so standard or strict, we will inherit and hold,is generally held limited, holding is holding an instanceIn short, a succession of the birth of countless situations,
In a nutshell:
-Monitor. Enter/exit and mutexes are commonly used for protecting objects
From being used by two threads at the same time. Every thread acquires
Mutex (resp. enters the monitor) before it uses the object, and no other
Thread will be allowed to do the same until the mutex is released (resp.
Monitor is exited); the monitor methods are faster and use less memory,
Mutexes can be shared using SS Processes
-The lock statement internally uses
Preface
I recently read the book C #3.0 Core Technology in the library. I think it is quite good to read it. C #3.0 technology covers from basic syntax to new features, it is a good book to learn C #3.0. I wanted to download the electronic version from the Internet but couldn't find it, but I read the English version of C #3.0 in a Nutshell, 3rd Edition, also very good. I plan to take the time to learn something and write a few articles on my blog to
publishing.Vbsctip: Is the ASP default scripting language.LUA: is a small scripting language.Haskell: A standardized, general-purpose, purely functional programming language with unqualified semantics and strong static types.LOGO: is an early programming language and a programming language very close to natural language.ML: is a general-purpose functional programming language.Pascal: It's a high-level programming language for computers.Prolog: is a logical programming language.Scheme: A variant
MySQL, Mysqli, PDO in a nutshell comparison
1
MySQL extension
(Note: original, poor)
2
MYSQLI extensions (process-oriented)
(Note: More features than above)
3
Mysqli extension (object-oriented)
(Note: More in line with object-oriented thinking than above)
4
Mysqli extension (Object-oriented) (Prepare statement)
(Note: More performance and safety than
1, bytecode is always a big paragraph2, other languages run in Java, or implement a compiler similar to Javac, which interprets the language as a class file. Either, directly re-implementing the JVM, directly explaining the language3,java and C + + differences:
Java's function call is virtual by default
Java always passes the value of the
Java does not support multiple inheritance
Java does not have operator overloading
4,java ignores all whitespace, tab, line breaks, and so on,
The relationship between the JAVA8 function reference and the lambda expression => function Reference is a simplified lambda expression that infers only the function, parameter, and return value compiler that appears. > Actually this grammar and lambda expression is exactly the opposite, NBSP;LAMBDA expression represents an anonymous method, which is the absence of a function name, giving only parameters and method bodies. Then the existing function comes in handy, the existing function has th
1 Background 1.1 Docker introductionDocker is a container engine project based on lightweight virtualization technology from Docker, the entire project is based on the go language and complies with the Apache 2.0 protocol. Today, Docker can quickly automate deployment of applications within the container, and can provide container resource isolation and security
following example.The parameter-D means that after running directly into the background, a string of output that is echoed on the screen is the ID of the new boot container instance.It then launches a Nodejs container instance, uses the official node image as the base image, and establishes a "connection" to the Mongo-ins instance. This container instance is named Node-app.
$ docker Run--name node-app-p--link mongo-ins:mongo-it node/bin/bash
Docker installation and sharing of common commands and sharing of common docker commands
Basic commands
1. To install docker in yum, the root permission is required.
Yum install docker
2. Start docker
Systemctl start docker. servi
Docker Quick Start-common docker commands 1. Introduction to docker commands 1. Introduction to docker commands
You can run the sudo docker or sudo docker HELP command to view the docker
1 PrefaceSince its inception, Docker has led the technology boom in lightweight virtualization containers. In this trend, Google, IBM, Redhat and other industry leaders have joined the Docker camp. While Docker is still primarily based on the Linux platform, Microsoft has repeatedly announced support for Docker, from p
Docker-2 learn more about docker, docker-2dockerDockerBasic concepts of images, containers, and warehousesImages
A Docker image is a read-only template.For example, an image can contain a complete CentOS operating system environment where only httpd or other applications are installed.
Images can be used to create
Docker InspectEstimated reading Time:2 minutes
Description
Return low-level information on Docker objects Usage
Docker inspect [OPTIONS] name|id [name|id ...]
Options
Name, Shorthand
Default
Description
--format, F
Format the output using the given go template
--size, S
False
Display Total Fil
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