Programmer Group

Promise.resolve The Promise.resolve() method returns a promise object parsed with the given value. If the value is a promise, the promise will be returned; If the value is thenable (i.e. with "then" method), the returned promise will "follow" the thenable object and adopt its final state. const thenable = { then(onFullfi ...

Definition: lock ensures that when one thread is in the critical area of code, another thread does not enter the critical area. If another thread attempts to enter locked code, it will wait (that is, be blocked) until the object is released. Monitor methods are static and can be called directly without generating an instance of the monitor clas ...

Occasionally, when you encounter a need, you want to highlight a specific reference item in a specified color. One scenario is to respond to the reviewer's request to add references. One solution is to manually modify the. bbl file after normal compilation, and then run pdflatex/xelatex again. This scheme is very free, but not convenient, ...

Link: E-speed forwarding_ Niuke challenge 48 (nowcoder.com) The given length is n n Sequence of n a a a. Altogether m ...

A few days ago, I added the function of virtual Tree to Santd's Tree component to solve the performance problem of Tree component when rendering massive data.You may have the opportunity to use the virtual tree in front-end business in the future. Even if you don't use it directly, understanding the virtual tree may also provide you with some n ...

explain: The methods used in this paper come from network search. This paper draws lessons from the articles of other bloggers and implements the Alpha Shapes algorithm on his basis. Then I wrote an Alpha Shapes demonstration program. Alpha Shapes demo download Data: 1. Click in the blank space to add data. 2. You can also directly click the ...

Experimental task 1 Task 1-1 task1_1.asm source code 1 assume ds:data, cs:code, ss:stack 2 3 data segment 4 db 16 dup(0) 5 data ends 6 7 stack segment 8 db 16 dup(0) 9 stack ends 10 code segment 11 start: 12 mov ax, data 13 mov ds, ax 14 15 mov ax, stack 16 mov ss, ax 17 mov sp, 16 18 19 mov ah, 4 ...

1, Introduction RocketMQ is Alibaba's open source distributed messaging middleware. It draws on Kafka's implementation and supports functions such as message subscription and publishing, sequential message, transaction message, timing message, message backtracking, dead letter queue and so on. RocketMQ architecture is mainly divided into four ...

1. Declare multiple variables //Conventional writing let x； let y = 20； //Abbreviation let x，y = 20； 2. Assign values to multiple variables Use array deconstruction assignment //Conventional writing let a，b，c； a = 5； b = 8； c = 10； //Abbreviation let [a,b,c] = [5,8,10] 3. Proper use of ternary operators //Conventional writing let ma ...

In the last section, we learned about what sentinel go can do, and the simplest example is how to run In fact, I have written the second part of this series for a long time, but it has not been released yet. I feel that the light initialization process is somewhat single, so I added the responsibility chain mode, two in one, and the content is ...