otn meaning

String formatting symbolic meaning Symbol Description %c Formatting characters and their ASCII code %s formatting strings %d formatting integers %o Formatting an unsigned octal number %x formatting unsigned hexadecimal numbers %x Format unsigned hexadecimal number (uppercase) %f Format fixed-point numb

A lot of friends in the tuning with MySQL will certainly use the explain to see the execution of the SELECT statement, here is a brief introduction to the results of the meaning of the two columns.1 Type column The official saying that this column represents the "type of access", and more commonly, the way MySQL finds the data rows needed. One is to introduce the worst from the most efficient to the best: all this is called a full-table scan, and no i

A lot of friends in the tuning with MySQL will certainly use the explain to see the execution of the SELECT statement, here is a brief introduction to the results of the meaning of the two columns.1 Type column The official saying that this column represents the "type of access", and more commonly, the way MySQL finds the data rows needed. One is to introduce the worst from the most efficient to the best: all this is called a full-table scan, and no i

Meaning of DBUnitdb, or decibel, is a very common unit in the field of electronics. This unit is characterized by the use of logarithms to represent the original data. 1 shell = 10 db = 10dB = 10 times times PowerFor an amplifier,power Magnification Ap = ten lg (PO/PI)voltage Magnification Au = LG (UO/UI)current Magnification Ai = LG (IO/II)For example: amplifier magnification of 40dB, indicating that its voltage amplification is 100 times times, curr

Option meaning of info. plist, meaning of info. plist 1. application does not run in background (container name: UIApplicationExistsOnSuspend) from the end of iOS4.0, when you apply the program line, press Home terminal, the application does not parse the current line, but hides in the background. Therefore, if you want to download the current program line after you press Home then, check this option. 2. A

This may be used in the shell, including DOS.Null is something called a null bucket, and the benefit of redirecting the output to it is that the file size is not constantly increasing due to too much content in the output. In fact, you think that null is nothing, that is, the output of the command is discarded.1 indicates standard output, 2 indicates standard error output, 2>1 indicates the standard error output is redirected to standard output, so that the normal output and error output of the

The meaning of the forest root domain in the domain tree, and the meaning of the domain forest root domain Contoso has many IT resources in the company's IT environment, and these IT resources are all in a state of decentralized management, which virtually increases the management cost of contoso, moreover, the management system cannot be implemented in the actual production environment. So how can we solv

On the physical meaning of negative frequency in spectrum --Reading analysis * Statement: This article is a large number of references to Chen Hui deep, Fang Haiyan of the relevant paper content* This article is the best I've ever read to explain the negative frequency of the spectrum, just to pay tribute to the two authors in this blog post. Absrtact: This paper discusses the physical

Meaning of "modal verb +have+ done"1, must has the meaning of done. "Must have+ past participle" means speculation in the past, meaning "must have been, presumably already, must have been ...", only used in affirmative sentences. For example:The streets is wet. It must has rained. The street is wet, it must be raining.He must has been drinking beer. He must have

8th: The meaning of the pursuit of lifeThe author of the Quest for life is a psychiatrist who comes out of a concentration camp, with the energy of a concentration camp, creating a sense of treatment (legotherapy), which is less retrospective and less introspective, and its focus is on the future, In the work and meaning that the patient is going to accomplish in the future. People who know how to live, alm

Thoughts on the meaning of living out of lifeWith the teacher's recommendation, I read Victor Frankel's work, "living out the meaning of life," which describes the pain and suffering that the author has experienced, depicting such a horrible inferno from an impersonal point of view, and Aftermath's author has changed his mind about human life and pioneered the "meaning