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
The theoretical knowledge I don't see much, no very accurate concept, I think no matter which development method has its own theoretical basis, and the corresponding method steps, such as waterfall model, incremental model, iterative model, agile method, etc.
And because the project is different, such as whether it is a new project, two development projects, or maintenance projects, the method used is not the same, there is no fixed, different compani
This is the third article in the agile development series. (One, two, three, four, five, six, seven, eight, nine)
After breaking the law enforcement, it is easy to fall into the empty hold, that is, there is no absolutely best method, so there is no need to pursue, willing to the status quo. It is very difficult to balance null and there is, this is the content of this article. Method and empty
There has been a long history of the unification of la
"In essence, all models are wrong, but some models do work," he said. "This passage comes from George E.p.box, a statistician from the University of Wisconsin in the United States, and the founder of the university's Center for Quality and productivity improvement."
There has always been a saying that James Shore and Diana Larsen together designed an Agile maturity Model (AMM), which introduces a set of agile
The first "User Story driven Agile development –1" in this series. "To share with you the process of using user stories to help teams create requirements, in this article, let's look at how to use these user stories and feature points to form product backlog." The product backlog is a tool used in agile development to manage the list of requirements, prioritize, form iterations, and organize development/tes
Because of the organization of a new research and development team, and probably the team will be young people mainly, fresh graduates especially large.
I think it's a good time to try out a new development model, but of course it needs a smooth transition. First of all, we do not have the experience of agile development, and secondly, all the concepts of agile development may not be fully suited to the te
Agile basic knowledge----demand management based on story (III.)
(3) Daily station meeting
The purpose of the station will be three:
(1) Known progress
Progress is known only from the level of user stories and tasks, and there are only two states of task progress: complete or incomplete (percent complete).
(2) A well-known scheme
What work will you do before the next meeting?
(3) Throwing problems
What's blocking your progress? ("No problem
As agility becomes more and more mainstream, various agile conferences are held, and one agile book is published one after another. One company is moving forward to agility, which is a hot scene. This reminds me of my feelings when I was reading the report. At that time, I was able to see advertisements for psoriasis and liver disease in prominent places in every newspaper. At first glance, I felt that ther
Story based Agile basic knowledge----story writing
Why use story?
Software industry for more than 40 years, demand analysis technology has been very mature, but the MRD-driven process is overwhelmed. Since MRD often takes up a lot of time, MRD reviews take up a lot of time, and after coding is done, the pressure is poured into QA, often on the schedule, or the experience is poor, or there are too many bugs, or the project is postponed.
Using story,
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