scenario : there is an object, and the method foo () is added through the prototype keyword. var Graph = new Graph(); foo Graph.prototype.foo = function(){ ... } fun Graph.prototype.fun = function(){ ... } now the logic in the foo ...

The question is written on the title, is there any way to be spaced by BAN, when it is applied too fast in crawlers? Or is it that there is no interval in this kind of concurrency? ...

recently read functional programming Guide I can t understand the part of the container. There is a code that says Functor as follows: class Maybe { static of(x) { console.log(1); return new Maybe(x); } get isNothing() { console...

when cross-compiling radiotap, there is no `le32toh definition: https: github.com radiotap r. take a look, in the header file endian.h defined, and then can not find out where the header file endian.h, kernel include does not contain is defi...

I need to capture the startup and shutdown messages of windows, so I need an interface. After I do boot, the program does call my method in the background, but there is no interface, so I cannot receive the shutdown message of windows. But if I open the ...

1.data defines the array gametasks, 2.wacth. Console can see that the data has indeed changed. 3. Rendering is not successful in dom ...

originally wrote JAVA, but the sophomore recently encountered asynchronous programming in the new nodejs, is a bit difficult to understand. now I am writing a crawler originally done in JAVA, get a url list, submit the request crawl web page with for...

for example, I have such a simple code block, the main function is to receive http requests through the flask application, then judge the validity, and then send the combed data to other modules using tcp. So should the class that sends tcp requests inhe...

the project obtains the configuration items through the configuration file before it wants to go to devops,. Now it pulls the configuration items from the configuration center, modifies the previous configuration file Synchronize load to obtain the con...

help to see if the following js oop code interprets private variables, instance variables, static variables, and public variables correctly. by the way, what is variable a? What s the name of a variable in oop? var Oop = (function () { var a = A...

curry = fn => { let arr = []; judge = (...args)=>{ if(!args[args.length-1]){ return fn(arr); }else{ arr.push(...args); re...

main server jps shows DataNodeDataNode jps: dead nodes is displayed as 0 ...

there seem to be only six data types in python3 (strings, numbers, lists, dictionaries, tuples, collections), but I recently learned about the chapter on classes. 1 is an "instance " generated by class instantiation a data type? 2 are binary arrays an...

there are always errors when compiling u-boot: arm-linux-gcc ...

for example: ImageView imageview1; ImageView imageview2; ImageView imageview3; imageview1=(ImageView)findViewById(R.id.main1); imageview2=(ImageView)findViewById(R.id.main2); imageview3=(ImageView)findViewById(R.id.main3); imageView1.setVisibility(Vi...

for example, when I use kafka or rabbitmq to get data from a message queue, the source has only one queue and cannot offload data from the data source. However, it is difficult to calculate, so it is necessary to divert it internally. For example, my me...

as in the following code, I created a middleware and launched a browser in the _ _ init__ method. I want to update the agent of driver = webdriver.PhantomJS (service_args=service_args) through the process_request method, and how to change the code. cla...

the code is as follows: -sharpinclude <linux init.h> -sharpinclude <linux module.h> -sharpinclude <asm pgalloc.h> -sharpinclude <asm pgtable.h> -sharpinclude <linux thread_info.h> -sharpinclude <linux slab.h> -sharpi...

< H2 > problem description < H2 > there is an A parent class use A; class B extend A { public function __construct() { } public function index() { echo "Method: index"; } } $a = new A; $a->index(); ca...

...