Tag：Character string
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Time：2020-9-21
To implement this function, we first need to understand the sort() function in JSFirst write a simple example to try the function var strlist = [‘x’,’a’,’c’,’m’] console.log(strlist.sort()) console.log(strlist) We can see that the array is arranged in alphabetical order, and the original array is also changed Looking at the official documents, we know that the […]
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Time：2020-9-20
PHP, JavaScript syntax comparison, quick check From the view of full stack engineers, they have learned more computer languages and often confuse the functions of different languages. As a full stack PHPer, often PHP, JavaScript syntax silly division is not clear, Baidu, look up the manual to network speed. It’s better to collect this article, […]
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Time：2020-9-20
Scene description When you encounter the following problems in the string exercise, comment out the first line to output true and add the first line to output false. The code is as follows: SimpleDateFormat simpleDateFormat = new SimpleDateFormat(“yyyy-MM-dd HH:mm:ss”); String s3 = new String(“1”) + new String(“1”); s3.intern(); String s4 = “11”; System.out.println(s3 == s4); […]
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Time：2020-9-20
Introduction:#Introduction go Python provides rich [c-api]（ https://docs.python.org/2/c-a… 。 C and go can be integrated seamlessly through CGO. Therefore, calling libpython directly through golang can realize the function of go calling python. But the process is more complex, and [go Python]（ https://github.com/sbinet/go-… brief introduction go-python Python provides a rich c-api. C and go can be integrated […]
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Time：2020-9-19
preface: at present, the knowledge content related to redis has become a regular customer in the back-end interview. Mastering and understanding redis can greatly increase your interview scores. In addition, it is not advisable to memorize the standard answer to stand out in the interview. In this series, the small blackboard will be interview oriented, […]
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Time：2020-9-19
[basic review] a. Character class Any character in brackets [^…] any character not in square brackets . any character other than newline and other Unicode terminators \W any word made up of ASCII characters, i.e. [a-za-z0-9] \W any word that is not composed of ASCII characters, i.e., [^ a-za-z0-9] \S any Unicode whitespace, such as: […]
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Time：2020-9-18
1. What is a shell? Computers understand the language of zeros and ones known as binary language. In the early days of computing, instructions were provided using binary language, which is difficult for all of us to read and write. Therefore, in an operating system there is a special program called the shell. The shell […]
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Time：2020-9-18
01 integer type Integer types can be divided into signed integer and unsigned integer according to signed / unsigned. The two types are divided by size, including 8-bit, 16 bit, 32-bit and 64 bit size 8 16 bits 32 bit 64 bit Signed int8 int16 int32 int64 No sign uint8 uint16 uint32 uint64 In addition, […]
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Time：2020-9-17
Transferred from: http://www.maomao365.com/?p=10278 Abstract:The following describes the method of separating single column data with comma combination into multi column data in SQL serverExperimental environment: SQL Server 2012Realization idea:1. Replace comma separated data with XML data2. Use XML reading function to read relevant dataFor example:Example of splitting a comma containing string into multiple columns create table […]
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Time：2020-9-17
1、 Background There is such a demand in work: Use regular expression to replace the span tag in a string with img tag, and put the content of the original span tag into the SRC of img tag. The problem is described in detail: click me Seeing this requirement, I know that regular expressions can […]
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Time：2020-9-17
Sun Gong’s death has no end, and his contribution to the Tang Dynasty ended up in the sea. Wedge In the past two weeks, I have published three spring security articles and one essay. This week, I plan to write some simple, useful and easy-to-use articles to change my mind and have a rest. Today, […]
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Time：2020-9-16
/// ///The decimal places are removed from the string, and the precision can be specified. The default value is two decimal places. If the string fails, the string is 0 /// /// /// /// public static String ParseThousands(this String This, int accuracy = 2) { if (String.IsNullOrEmpty(This)) return This; try { This = double.Parse(This, NumberStyles.AllowThousands […]
