the code is as follows: function longTimeDo() { let data = []; let sourse = [1,2,3,4,5]; sourse.forEach(value=>{ setTimeout(()=>{ data.push(value); },1000); }); ?data } ...
I am a novice. I encountered some doubts when learning the asynchronism of javascript , as follows: there is an example code like this in teacher Ruan Yifeng s tutorial: does not particularly understand the operation mechanism of the whole mult...
question 1: why is the middleware in the koa2 framework written in the form of async, rarely in Synchronize mode (that is, without async)? For example, app.use(async (ctx, next) => { const start = new Date() await next() const ms = new Date() ...
like PHP can do this: a = var class test: var = value T = test() t ??? a : value ...
creates a dictionary that uses a person s name as a key, enters a name lookup value, and returns an error. Code: people={ Alice : { phone : 6789 , addr : Ruan road 23 }, Mary :{ phone : ...
in java, mongodb is operated by multiple threads. uses mongoTemplate as an operation. then, there are more than five hundred threads to operate on the mongodb. then, it was found that none of the 500-plus threads had to create a new mongodb connection...
SVN project directory rep -| trunk-sharp backbone -| branches-sharp branch -| login-model-sharp login module the operation flow login module completes the development and basic testing, then submits it and merges it into trunk. two codes are sto...
how does thinkphp5 turn on debug mode only in local code or in a method? I set the great effect in the program as follows Config::set ( app_debug ,true); ...