Tag：data type
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Time：2020-6-4
notes /*Multiline comment*/ #Single line notes –Single line comment (Note: two but spaces are required after the horizontal line) data type 1. Shaping tinyint、smallint、mediumint、int、bigintSmall integer value large integer value large integer value large integer value maximum integer value 2. Floating point float、double 3. Decimal type Decimal (often used to ensure data is not […]
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Time：2020-6-3
Hi, Hello, this is Mingo. During my time of learning Golang, I wrote detailed study notes on my personal WeChat official account “Go programming time”. For Go language, I am also a beginner, so writing things should be more suitable for students who are just in contact. If you are just learning Go language, do […]
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Time：2020-6-2
preface Data type is a set of the same value type defined on its data structure and a set of operations on the same value set in programming language. The value of data type can not be stored without variables, so one of the functions of variables is to use it to store data types […]
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Time：2020-6-2
Hi, Hello, this is Mingo. During my time of learning Golang, I wrote detailed study notes on my personal WeChat official account “Go programming time”. For Go language, I am also a beginner, so writing things should be more suitable for students who are just in contact. If you are just learning Go language, do […]
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Time：2020-6-1
1. The role of go in sqlserver** Go signals the SQL Server utility that a batch of transact SQL statements have ended. Go is to execute T-SQL statements in batches. (the next step, i.e. go by go, will only be executed if one step is successful) Begin and end statements are used to combine multiple […]
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Time：2020-5-29
Function as return value function f1() { console.log (“F1 function start”); return function () { console.log (“function as return value”); } } Get the data type of num Judge whether the object is of a certain type var num = 10; console.log(typeof num); //num var obj = {}; console.log(obj instanceof Object); //true […]
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Time：2020-5-29
Basic data types in JavaScript Data type name data type specification Undefined There is only one value, that isundefined , declare the initial value of the variable. Null There is only one value, that isnull , for null pointer, undefined The value of is derivednull Value of. String From zero or more 16 bitsUnicode Character composition Boolean There are only […]
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Time：2020-5-28
Hi, Hello, this is Mingo. During my time of learning Golang, I wrote detailed study notes on my personal WeChat official account “Go programming time”. For Go language, I am also a beginner, so writing things should be more suitable for students who are just in contact. If you are just learning Go language, do […]
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Time：2020-5-27
preface Why summarize the use of generics? How does generics represent value in a project? Don’t talk about it. Summarize it. From practice to theory, finally return to generic nature. 1. What is generics? Why generics? definition: Generics: the “broad data type“, any data type. effect: Generics can solve the security problem of data types. […]
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Time：2020-5-27
New features in version V1.1.0 1. Add a new “business line” module to classify and manage projects based on the business line granularity; 2. New “data type” module: the system supports data type entry and nesting. Each API only needs to bind one data type and does not need to execute response data parameters separately; […]
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Time：2020-5-27
Redis data types and application scenarios Redis supports five data types: string, hash, list, set and Zset (sorted set). 1、 String Introduction: strings data type is the most common and simple key value type. Ordinary key / value storage can be classified into this type. Value can be either a string or a number. Because […]
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Time：2020-5-26
Hi, Hello, this is Mingo. During my time of learning Golang, I wrote detailed study notes on my personal WeChat official account “Go programming time”. For Go language, I am also a beginner, so writing things should be more suitable for students who are just in contact. If you are just learning Go language, do […]
