sonar static code analysis

LinkedHashMap source code analysis of Java Collection series, linkedhashmap source code In this article, we started to analyze the source code of LinkedHashMap. LinkedHashMap inherits HashMap, which means that LinkedHashMap is extended on the basis of HashMap. Therefore, before reading the source

PHP tags, keywords, classes, numbers, and lexical source code for PHP lexical parsing source code analysis I have never engaged in web applications before. Recently I want to study webshell and find that php syntax is too weird. I just want to look at the PHP kernel lexical analysis

From the source code analysis Handler mechanism, the source code handler Mechanism In Android, to update the ui, We must update the ui in the main thread. When the main thread is blocked for more than 5 seconds, an anr exception occurs, will cause program crash. Therefore, some time-consuming operations must be placed in the Child thread, but the ui update opera

JQuery-1.9.1 source code analysis series (13) location size operations, jquery-1.9.1 source code First, list these Apis. JQuery.fn.css (propertyName [, value] | object)(The function is used to set or return the css style attribute values of the elements matched by the current jQuery object. To delete a specified css attribute, use this function to set its value t

Memcached source code analysis ----- install, debug, and read the memcached source code ----- memcached Reprinted please indicate the source: http://blog.csdn.net/luotuo44/article/details/42639131 Installation: Install Libevent before installing memcached. Now it is assumed that the Libevent is installed in the/usr/local/libevent directory. Because after memcac

Original article: http://java.dzone.com/articles/java-tools-source-code 1.PMDFrom Http://pmd.sourceforge.net/ PMD can scan Java source code to find potential problems similar to the following: Potential bug -- a null value is returned in the try/catch/finally/switch statement. Dead Code-unused local variables, parameters, and private methods. Unreasonable

JQuery. each usage and source code analysis, jquery. each source code The jQuery. each method is one of the core tools and methods of jQuery. It is a common sample method and can be used for sample object and array. Unlike the $ (). each () method of the jQuery object, this method can be used to sample any object. Two parameters are required. Object: The object o

Java Collection: HashMap source code analysis, hashmap source code1. HashMap Overview HashMap is implemented based on the Map interface of the hash table. This implementation provides all optional ing operations and allows the use of null values and null keys. (Except for not synchronizing data and allowing null, The HashMap class is roughly the same as that of Hashtable .) This class does not guarantee the

The main argument for supporting static analysis, including type checking, is that the results apply to all possible runs of the program, while unit tests only guarantee that the tested components (on the platform on which they are tested) apply only to specific inputs to the test component. The main argument for supporting unit testing is that it is easier to handle. You can test many of your programs ' c

DBUtils source code analysis, dbutils source code In fact, in this article, I only analyzed the operation process of dbutis query. As for why the class should be designed in this way, the design patterns and other advanced knowledge points should be discussed in the next section. First, let's take a look at how the simplest DBUtils works.There is a table in the d

　　Recently, there is no substantive work, just a little time, want to learn other people's code. Also saw a bit of source code, is a bit of reading experience, so determined to see the spring of this large-scale project source code, learn its design ideas. Hand code is not easy, reproduced please specify: Xingoo

MVC source code analysis, mvc source code The previous chapter parses the search of the Action method and the loading time of the Authorize, Action, Result, and Error filters. I also spent two articles on the use of authorization and error filters. however, the execution time of the Action/Result and the two filters in the Action/Result are not clearly displayed.

Source code analysis of javaslist in Java Collection series, and javaslist source code In the previous article, we analyzed the underlying implementation of ArrayList and learned that the underlying implementation of ArrayList is based on arrays. Therefore, it has the characteristics of fast search modification and slow insertion and deletion. The sort List intro

From the source code analysis java Collection [HashMap], the source code javahashmap As we know, Map stores key-value pairs. Its basic unit is to implement Node static class Node You can see its function by looking at the definition. It stores an object next to the next node. Therefore, we can probably think of its s

converted to: (the code is incorrect. I have used it) Found? 2 and 7 are obtained by means of decomposition. Is there a simplified process? 2.3 conclusion As long as we can find the factorization, we can use a loop to obtain the value behind the equation. Dividing the value by 2 is the true factor and the first eye of the equation, we may think of using the proportional series formula to solve the problem, however, the power operation can be used to

Recently, there is no substantive work, just a little time, want to learn other people's code. Also saw a bit of source code, is a bit of reading experience, so determined to see the spring of this large-scale project source code, learn its design ideas. Hand code is not easy, reproduced please specify: Xingoo

powerful GPU debugging, CPU and GPU code analysis, and static OPENCL kernel performance analysis and other capabilities.AMD provides a stand-alone CODEXL analysis tool that supports Windows 7, Windows 8, and Linux systems. There is also an extended version of AMD Codexl on

Note: The following source code is based on jdk1.7.0 _ 11 The Set set is actually an encapsulation of the map set. The map set stores key-value pairs, So we hide the values and do not expose them to the outside world. This forms the Set set.Corresponding to two very important implementations of the map set hashmap (based on the hash table), treemap (based on the red and black trees), the Set set also corresponds to two classes of hashset and treeset

Intermediary mode analysis, structure diagram and basic code, mediation structure diagram codeZookeeper Definition: a mediation object is used to encapsulate a series of object interactions. The intermediary makes the objects do not need to be explicitly referenced to each other, so that the coupling is loose and the interaction between them can be changed independently.Applicability: The intermediary mode

Performance optimization in software development is a very important issue for programmers . A small problem can become a bottleneck for a large system. But it is very difficult for programmers to optimize their code by themselves. Fortunately, there are some great tools that can help programmers with code analysis and performance testing, making it much easier f