avoid ransomware

Use static to avoid "repeated read ". In complex web program development, because the object-oriented data operation method or business logic is too complex, developers, it is often unconsciously read repeatedly in complex web program development. because of the use of object-oriented data operations, or the business logic is too complex, developers in the development process, data is read unconsciously. For example: $ Result1 = tableobjectPeer: getRe

troubles and make it more concise) 3: Ensure cell phone power: It is necessary to keep the power of the mobile phone above 75% to prevent power failure. (The best status is full) 4: take out the memory card, SIM card: In general, the flash brush will not affect the data in the memory card and SIM card, but considering that the flash may carry out a variety of data operations, in order to avoid losses caused by mistakes, it is better to take out the

currently. Https://chrome.google.com/webstore/detail/yslow/ninejjcohidippngpapiilnmkgllmakh Https://addons.mozilla.org/en-US/firefox/addon/yslow/ You should have some knowledge about the developer tools of these browsers. You can call up this tool by pressing F12. VISAUL studio 2010 SP1 or later, Visual Studio 2012 is recommended Http://www.microsoft.com/visualstudio/eng/downloads You need to have a good understanding of the basic development proces

Valid tive C # Item 23: avoid returning references to internal class objects We know that defining a read-only attribute makes it impossible for the caller to modify the value of this attribute. However, this approach is not always possible. If we create an attribute that returns the reference type, the caller can perform any operations on these object members, including those that we do not expect. Consider the following example:Public class mybusine

Null Pointer exception is the most common and annoying exception. This topic describes how to avoid NULL pointer exceptions. First, let's look at the following example private Boolean isFinished(String status) { if (status.equalsIgnoreCase("Finish")) { return Boolean.TRUE; } else { return Boolean.FALSE; } } If the value of status is null, a null pointer exception will occur (row 2nd in this example ). Therefore, w

In the previous article, we introduced why we should avoid writing copy constructors and value assignment operators. Today we will discuss why we should avoid writing code in the destructor. That is, leave the Destructor empty. For example: virtual ~MyClass(){} We use the term null destructor to represent the Destructor without code in curly brackets. You may need to write the Destructor for the following

How to avoid the problem that the table cannot be used when MySQL modifies the table structure When modifying the table structure, MySQL may interrupt the normal operation of the product and affect the user experience, or even worse, resulting in data loss. Not all database administrators, programmers, and system administrators know that MySQL can avoid this situation. DBAs often encounter this kind of prod

Migration to Linux is a pleasure for many people. For others, this is a nightmare. Especially for some administrators who have just entered the Linux management gate, if some common errors are not avoided, it is easy to bring security risks to the network or system of the organization. This article will help these beginners avoid Migration to Linux is a pleasure for many people. For others, this is a nightmare. Especially for some administrators who h

Several methods for MySql to avoid repeated inserts of records: bitsCN.com Solution 1: Use the ignore keyword If you use the primary key primary or the unique index unique to distinguish the uniqueness of a record, you can use the following to avoid repeated insertion of records: Insert ignore into 'Table _ name' ('email ', 'phone', 'User _ id') VALUES ('test9 @ 163.com', '123', '123 '); In this way, when t

confirm the other side. Send the test scope to the project stakeholders in a mail-only manner. On the one hand, let the recipient confirm that their understanding is correct, on the one hand, the recipient will be found when the information error correction. Inform the Test Manager (or project manager) of the risk, including quality risk and schedule risk. Smoke test after version is released It is important to verify that the version is measurable.

Programmers pay a high and low, some people one months may take 30K, 50K, some people may only 2 K, 3K. Also has five years work experience the programmer, may one person takes 20K each month, one takes 5K. What are the factors that lead to this difference?I've deliberately summed up the nine behaviors that are likely to lead to low pay and avoid these pits, and you're not far from the high salary. Customary instant returnHe did not know that only spr

DMLErrorLogging is used to avoid bulkinsert faults. If an error occurs when an insert statement with subquery is used to load data, the system terminates the statement and rolls back the data. DML Error Logging is used to avoid bulk insert failure. If an Error occurs when an insert statement with subquery is used to load data, the system terminates the statement and rolls back the data. Use DML Error L

Absrtact: I recognize a very counterintuitive phenomenon, good programmers are lazy and silly. Because he is lazy, he will write all kinds of tools to work for himself. Because he is lazy, he will try to avoid writing boring and repetitive code--thus avoiding the redundancy of the code, reducing the cost of maintenance, so that the restructuring changes ...I realize that a very counterintuitive phenomenon, good programmers are lazy and silly.Because h

Ways to avoid smarty conflicts with CSS syntax This article mainly introduces the method of avoiding the conflict between Smarty and CSS syntax, and analyzes the techniques of dealing with the conflict between Smarty and CSS in parentheses {}. The examples in this article describe ways to avoid conflicts between Smarty and CSS syntax. Share to everyone for your reference. The specific analysis is as fol

Have you ever encountered the title of "repeated submission? It is not difficult to solve this title. Here is a simple method to avoid repeated submission of the same form. First, we can define a session variable to retain the submission serial number of a form. Have you ever encountered the title of "repeated submission? It is not difficult to solve this title. Here is a simple method to avoid repeated sub

problem? Since function f recursively calls itself, its caller property is automatically updated, referring back to function f. Therefore, the function Getcallstack will fall into the loop of finding the function f indefinitely. Even though we tried to detect the loop, there was no information about which function called it before the function f called itself. Because the information for the other call stacks has been lost.These stack check properties are non-standard and are restricted in port

Migration to Linux is a pleasure for many people. For others, this is a nightmare. Especially for some administrators who have just entered the Linux management gate, if some common errors are not avoided, it is easy to bring security risks to the network or system of the Organization. This article provides some suggestions to help these beginners avoid these errors. Error 1: download and install various types of applications from multiple channels wi

For details about how to avoid circular import in Python Preface When using a package in Python, It is very common to have a circular import problem. We create the following package to illustrate this problem: pkg ├── __init__.py ├── module_a.py └── module_b.py Where, _ Init _. py: Specify pkg as a Python package. Module_a.py definesaction_a()Function, which references an attribute in module_ B .py, such as a function or variable. Module_ B .py define

A lot of people are using Nodejs settimeout (callback, delay[, arg][, ...]) When writing timed tasks, it is customary to directly manipulate callback objects outside the object (characteristics of closures). There is a hidden danger that when callback is actually executing, the external object objects may have been destroyed (such as a custom destruction method), resulting in a great deal of deviation from the processing of object, and the program may even exit with an exception.To solve this pr

1. As stated in clause 19 and clause 20, the construction and destruction of temporary objects increases the operating costs of the program, so it is necessary to take measures to avoid the creation of temporary objects. Article 20 describes a method for eliminating the return object of a function and producing a temporary object--rvo, However, it does not address the cost of temporary objects resulting from implicit type conversions. In some cases, y