Original Title: domain-specific ages original Publishing House: Addison-Wesley professional; 1 edition Author: (English) Martin Fowler Translator: thoughtworks China Book Series Name: china CHAPTER programmer library Publishing House: Machinery Industry Publishing House ISBN: 9787111413059 mounting Date: March 2013 publication date: 16 open pages: 464 versions: 1-1 category: computer> Software and programming> integration> advanced programming language design
For more information, see Introducti
, coverage, and price are not obvious. First, the 11 m transmission speed of 802.11b is higher than the access speed of Common Household broadband types such as DSL and LAN, which can fully meet the needs of domestic users for wireless broadband Internet sharing. Second, the price of 802.11b products is easy to accept. From the current price point of view, the same brand of 802.11g products are often two ~ Three times, but a few vendors have recently
is higher than the access speed of Common Household broadband types such as DSL and LAN, which can fully meet the needs of domestic users for wireless broadband Internet sharing.
Second, the price of 802.11b products is easy to accept. From the current price point of view, the same brand of 802.11g products are often two ~ Three times, but a few vendors have recently lowered their prices to a level accepta
according to their different rates. In the past, the two products were the most common. Which of the two standards is more suitable for family users?
It is not easy to answer this question, because although the 802.11g product can be regarded as an upgrade of the 802.11b product, the advantages in compatibility, stability, coverage, and price are not obvious. First, the 11 m transmission speed of 802.11b is higher than the access speed of Common Household broadband types such as
it.3. Make good use of pricing strategies. First, use the free version to gather popularity and use each other at low prices and high prices. Second, we also need to look at the value that competitors and programs can provide to users. He gives the number
It is shown that the top-ranking pricing range is roughly between $0.99-$3.99.4. Be creative. When developing mobile applications, you must consider the
although the 802.11g product can be regarded as an upgrade of the 802.11b product, the advantages in compatibility, stability, coverage, and price are not obvious. First, the 11 m transmission speed of 802.11b is higher than the access speed of Common Household broadband types such as DSL and LAN, which can fully meet the needs of domestic users for wireless broadband Internet sharing.
Second, the price of 802.11b products is easy to accept. From the
as upgrades to 802.11b products, the advantages of compatibility, stability, and coverage and price are not obvious. First of all, 802.11b products 11M transmission speed than DSL, LAN and other common broadband type of access speed, can fully meet the needs of home users wireless broadband sharing Internet. Second, 802.11b products in the price is easy to accept, from the current price, the same brand of 802.11g products are often 802.11b product pr
" is actually like this. The definition of metaprogramming is to write the code. quote in lisp can block the evaluation and use eval when necessary. Then, when running, operating your own code also has another meaning. It can be called dynamic metaprogramming to distinguish between the code generator and the compiler-Based Static metaprogramming. Generate various codes (classes, methods, tests, and so on) in batches to reduce repeated operations during programming. Various
In previous installments, I have begun to introduce the harvesting of domain idiomatic patterns (solutions for urgent business problems) by using domain-specific languages. For this task, DSL work is good because they are concise (with as few noisy syntax as possible) and readable (even by developers), and they stand out from more API-centric code. In the previous issue, I had shown how to use Groovy to build a DS
many reasons for this. MPLS VPN services typically provide many mesh networks, and any site can connect to other sites. To achieve this by using Frame Relay technology, you need to create expensive virtual lines between each site and every other site. MPLS enables users to avoid complexity and more costs.
MPLS also supports a variety of service quality at various prices, offering enterprise users the option of buying inexpensive VPN services for uni
the following business operations:Table 1. Business operations
Domain-specific language (domain specific Language)
The so-called domain-specific language (domain specific LANGUAGE/DSL), its basic idea is "to ask for a special purpose", unlike the general-purpose language as the target scope covers all software problems, but specifically for a specific problem computer language. As its name claims, the language is not generic, but focused on a par
1. Best time to Buy and Sell Stock ITopic linksTitle Requirements:Say you has an array for which the i-th element is the price of a given-stock on day I.If you were-permitted-to-complete at most one transaction (ie, buy one and sell one share of the stock), design an AL Gorithm to find the maximum profit.The essence of this problem is to find out the maximum difference between any two numbers in an array (the number of large numbers minus the small numbers). We find that the maximum difference i
very clear and clear in some problem areas may become less clear when implemented. As programmers, using clean code to achieve functionality is only a primary requirement, more importantly, to improve the level of common language, to build a specific problem domain language (DSL), the process is a key point is to find and define the problem domain-oriented atomic concepts, Combination of methods and abstract means . The
. Service) *Operandscontroller {returnoperandscontroller{controller:service. Newcontroller ("Operandscontroller")}}//Add runs the Add action.Func (c *operandscontroller) Add (CTX *app. Addoperandscontext) Error {//Tbd:implement write the corresponding function logic here returnNil}Very good, no need to repeat the framework of the Low-level code (routing, codec, etc.).Although the former company's framework was used before (that is, the use of Java's reflection to generate code automatically),
Document directory
Using Non JVM languages ages with storm
Dsls and multilang adapters
Using Non JVM languages ages with storm
Https://github.com/nathanmarz/storm/wiki/Using-non-JVM-languages-with-Storm
Multilang Protocol
Https://github.com/nathanmarz/storm/wiki/Multilang-protocol
Using Non JVM languages ages with storm
The JVM language is relatively simple. You can directly improve DSL encapsulation of Java.Non-JVM languages are a little more c
strange, this time is always disconnected, about 2.5 minutes, if the ping will be re-dial, but so Firefox also need to stop the escape and then re-refresh, depressed ...OKsudo gedit/etc/ppp/peers/dsl-providerAdjust the insideLcp-echo-interval 200Lcp-echo-failure 40MTU 1000Holdoff 0set the echo interval larger; more failures; MTU 1000 or smaller; some say Holdoff 0 .The argument.Found an article that said a way to modify the options filesudo gedit/etc
When using a DSL connection, if you are using a DSL connection that has a fixed or static IP address, the configuration step is the same as described in the previous network configuration. You connect the Ethernet interface to the DSL modem and configure the IP address, subnet mask, broadcast address, and gateway information provided by the ISP. You should be con
Best time to Buy and Sell Stock ISay you has an array for which the i-th element is the price of a given-stock on day I.If you were-permitted-to-complete at most one transaction (ie, buy one and sell one share of the stock), design an AL Gorithm to find the maximum profit.ExampleGiven array [3,2,3,1,2] , return 1 .Analysis: Because the sell is always after buying, so as long as there is a lower buy price, we can update the buy price, if the price is lower than the buy price, we will update Tempm
A DSL is a specialized language that addresses domain-specific issues. By getting closer to the problem, the DSL can provide benefits that may not be found in the common language. The Java world is full of DSLs. Property files, Spring contexts, a usage of annotations, and Ant tasks are examples of DSLs.
When I started to look at other languages like Ruby, I began to understand that the Java language is not
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