Getting started, recommended for entry-level SLR cameras

Getting started, recommended for entry-level SLR cameras

When everyone first saw the regular expression, I believe it was hard to understand the regular expression, except for aliens. The best way to learn regular expressions is to start with a simple example. The following uses a Chinese phone number as an example to demonstrate the use of regular expressions.

For example, the regular expression we define is:0 \ d {2}-\ d {8}This regular expression can be understood as a three-digit area code starting with 0, connected with a hyphen, followed by a phone number ending with an eight-digit number. Next we will construct two source texts to demonstrate the matching and mismatch respectively.

Matched source text:027-12345678This is a telephone number in Wuhan, China. We will test it using a regular expression testing tool. The test results are as follows.

Then, we construct an unmatched source text:027-1234567Because the subsequent number is 7 bits and does not match the 8 bits defined in the regular expression, the test results do not match naturally. The test results are as follows.

Of course, this regular expression is not very flexible. As we learn more about the regular expression, we will gradually improve it.

Getting started with Korean

It's just a letter.
I think it would be strange to find a teacher to learn the language.
I have seen many self-taught things. I can't understand them at all. What's more, Koreans can learn things if they don't have time.
However, it is best to have a language environment for others to correct your pronunciation. I think it is very important at the beginning for your subsequent pronunciation.
At the beginning, it was very difficult to change the Pronunciation after learning well. I think if you want to learn it quickly, you should first learn the letters, and then the simple syntax and common sentences.
I hope you can learn well.

Getting started with Korean

It's just a letter.
I think it would be strange to find a teacher to learn the language.
I have seen many self-taught things. I can't understand them at all. What's more, Koreans can learn things if they don't have time.
However, it is best to have a language environment for others to correct your pronunciation. I think it is very important at the beginning for your subsequent pronunciation.
At the beginning, it was very difficult to change the Pronunciation after learning well. I think if you want to learn it quickly, you should first learn the letters, and then the simple syntax and common sentences.
I hope you can learn well.