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property or member variable in a block that needs to reference an external controller, be sure to use weak references, especially member variables like _testid, where many people do not use weak references and cause memory to be freed.For objects that are normally created, because they are now arc projects, remember that the golden rule of memory management can be solved.18, which third-party libraries have been used?If you've ever developed an app and answered that you haven't used a third-par
picture suffix 2, how to suffix is tampered with, then each file has a magic digital file upload-magic number5, the principle and implementation of Message Queuing Answer: 1, Message Queuing Principle 2, comprehensible message queue ActiveMQVi. Database Aspects1. The MySQL query field area is not case-sensitive?Answer: Do not differentiate, even if the value is not differentiated (I asked at the time, the area of the application of the size of the meaning of what, the interviewer did not say)2,
business number in the interface transfer parameter, which is used to distinguish whether or not to commit repeatedly. So even if the data is captured, the other party can not distinguish the meaning of each field, then the role of this business number is coming2, if the server is often down, where do you troubleshoot the problem?A: This will be left for you crossing added, can comment replyInterview Skills to supplement these, if you remember anything in addition, if there are other small part
transfer parameter, which is used to distinguish whether or not to commit repeatedly. So even if the data is captured, the other party can not distinguish the meaning of each field, then the role of this business number is coming2, if the server is often down, where do you troubleshoot the problem?A: This will be left for you crossing added, can comment replyInterview Skills to supplement these, if you remember anything in addition, if there are other small partners have other suggestions can a
data is captured, the other party can not distinguish the meaning of each field, then the role of this business number is coming2, if the server is often down, where do you troubleshoot the problem?A: This will be left for you crossing added, can comment replyInterview Skills to supplement these, if you remember anything in addition, if there are other small partners have other suggestions can also be in the comments reply, other interview
, avoid concurrency, as for code tuning, these need to accumulate, such as refactoring, factories, etc. Database tuning I'm not quite sure of that. Index and stored procedures, specific reference: MySQL Database tuning 21 best practices, other database tuning aspects look for yourselves. 5. Talk about your understanding of distributedA: Personal understanding: Distributed is to split a system/business into multiple subsystems/sub-business to work together, this process is called distributed, t
Interview Summary--java the skills that senior engineer should master In front of the interview also summed up a and two, the third may be more inclined to the inner monologue and interview skills summed up it ... One, monologue Before interviewing others, now it's their tu
the main position. So how to review good technical points is necessary to find a good job (but also a large part of the luck component in it). For fresh students, because of the limited skills in school, so in the beginning of the interview after several companies, the feeling of shock is very normal, at this time must not lose heart, from each interview to sum up their own shortcomings, not to make up for
Java Senior Software engineer interview Exam If you want to apply for Senior Development engineer job, just know the basic knowledge of Java is not enough, but also must know the common data structure, algorithm, network, operating system and other knowledge. Therefore this
If you want to apply for Senior Development engineer job, just know the basic knowledge of Java is not enough, but also must know the common data structure, algorithm, network, operating system and other knowledge. Therefore this article does not explain the concrete technology, the author synthesizes oneself to apply each big company's experience, has collated a big company to the Java
If you want to apply for Senior Development engineer job, just know the basic knowledge of Java is not enough, but also must know the common data structure, algorithm, network, operating system and other knowledge. Therefore this article does not explain the concrete technology, the author synthesizes oneself to apply each big company's experience, has collated a big company to the Java
At present, there are "Java xx book" Similar books, and the contents of the book are focused on the most basic part of Java, the most serious is that there is a lot of wrong content, very misleading. In addition, there are a variety of Java interview questions on the web, many of which are also focused on the Java language Foundation. In fact, if you want to apply for S
This is an interview question for someone in early October. After-sales position: Senior Network Engineer. The interviewer is a three-member CCIE. The interview lasted more than two hours, and he was very impressed. Now this offer is basically determined, and the subject is still considering situations such as treatmen
foundation, grasp the principle of good technology, and then to practice, so as to understand a technology, learning can not have!In addition, the interview process, to maintain self-confidence, will not be bold to say no, no good disgrace, not to say you really will not, perhaps forget, perhaps did not notice, remember the interview topic, back to their own supplementary information and related informatio
foundation, grasp the principle of good technology, and then to practice, so as to understand a technology, learning can not have!In addition, the interview process, to maintain self-confidence, will not be bold to say no, no good disgrace, not to say you really will not, perhaps forget, perhaps did not notice, remember the interview topic, back to their own supplementary information and related informatio
This is a creation in Article, where the information may have evolved or changed. Gopherchina Conference will be held in 4.15-4.16 in Shanghai, small South Garden Hotel, Gopherchina conference is the largest and most professional go conference, gathered all over the country gopher together to share exchanges, the General Assembly hope that through the exchange of the line, the sharing of lecturers, So that you can understand the current go dynamic, application scenarios, technical details and so
This article introduced a PHP Senior engineer interview problem, before the programmer's Home (bbs.it-home.org) introduced a lot of PHP interview questions, here to provide a PHP senior engineer's face test, a bit difficult, need
, right? I said yes. Then he said, let's do it again, Question 2: Create a new modification and deletion function and draw a picture for me. Create a data table. When I got half of this question, it was time for them to get off work, so he asked me to go back at pm. I also had to come out and have a meal at the snack bar outside, and then finish the unfinished interview questions in the morning. This questi
reasonable allocation of server resources Cpu:apache MySQL in high-load environment, disk IO read and write too much, will certainly occupy a lot of resources, it is inevitable that the CPU occupies too high. Memory: Memory library, database software hard disk: file web2.0 architecture Select MongoDB+redis or mysql+Memcached is a better combination, the logic is simple to use NoSQL current main web site architecture LAMP, LNMP, LLMP now there is a lnamp architecture on the network, which is the
(To clarify, the purpose of my post is not to specifically evaluate the quality of these questions. In fact, my The company examines these issues. What can be answered can be either of them. If you think these questions are very simple, there is basically no problem in the. NET interview process. More problems. If you still don't know, you might as well calm down
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