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Source: juejin.cn/post/6971946031764209678 First look at the simplest print System.out.println(new Object()); The fully qualified class name and a string of strings of this class will be output: java.lang.Object@6659c656 @What is after the symbol? Is it hashcode or the memory address of the object? Or something else? In fact, @ what follow ...

catalogue 1. Known array var stringArray = ["This", "is", "Baidu", "Campus"] 2. The string foo = "get element by ID" is known. Write function to convert it into hump representation 3. Known array var numberArray = [3,6,2,4,1,5]; Apply array API for operation 4. Output today's date in YYYY-MM ...

LeetCode 18. Sum of four numbers Title: Give you an array of n integers, nums, and a target value, target. Please find and return the quads [nums[a], nums[b], nums[c], nums[d]]: 0 <= a, b, c, d < na. b, c and d are different from each othernums[a] + nums[b] + nums[c] + nums[d] == target You can return answers in any order. Example: ...

1, Function realization requirements Implementation: in the waterfall flow page layout implemented by RecyclerView, click any commodity to jump to its commodity details page. 2, Concrete implementation The file directory is as follows: 2.1 detail page design after jump Now only jump implementation is considered. Taking the first prod ...

nn.Module neural network 4. Pool layer Pooling layer: the pooling function uses the overall statistical characteristics of adjacent outputs at a location to replace the network output at that location. The essence is downsampling to reduce the amount of network parameters Still the old rule, import module and dataset, CIFAR10,batchsize=64: ...

response and request objects Tomcat receives the http request from the client and creates a request object representing the request and a response object representing the response for each request Since the request object represents the http request, we can get the data submitted by the browser and find the request object. The response o ...

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Sequence table Storage method of elements in the sequence table: The complete information of the sequence table consists of two parts: 1. Set of elements in the table 2. Information on the overall situation of the table There are two ways to implement the sequence table: Figure a shows an integrated structure: table information and el ...

Process and thread Process: The running program is an independent unit for the system to allocate and call resources. Each process has its own memory space and system resourcesThread: It is a single sequential control flow in a process, or a separate execution path If a process has only one execution path, it is called a single threaded progra ...

Title: submit sql script file with flynk sql client Date: twenty 21-10-22 22:11:34 Tag: [Flink, SQL client] Category: flink We know that sql-client.sh can provide us with an SQL interactive interface, so that we can see the execution results or interactive query table results without executing an SQL. In fact, we can also submit sql scripts t ...