I have a list,list whose element is dict. [{centre: (743), radius: 1105), radius: 41}, {centre: (743, 1106), radius: 48}, {centre: (899, 1443), radius: 48}, {centre: (900, 1442), radius: 40})] this is a data structure about the center and radius o...
persons= [{ name : Jon , age : 32}, { name : Alan , age : 50}, { name : Bob , age :23}] sorted (persons, key = lambda x: (x [ name ],-x [ age ]) persons [{ age : 32, name : Jon }, { age : 50, name : ...
suppose that the columns of table t csv are all stored in delimited values (the values themselves certainly do not have,); id | csv 1 | v1 br v3 2 | v2jue v3 3 | v3 . ) now I want to select any row that contains either v1 or v2 in t...
vue-router browser address is switched, but the page is not skipped this happens when I jump from page 1 to page 2, then return 1 from page 2, and then jump from 1 to 2. How did this cause the return method is this methods: { goBack() { ...
there is a set of BOA source code on the Internet, but BOA itself does not support HTTPS. After looking up the information on the Internet, we can only see that it is realized with ssl wrapper stunnel. Is there any other better way? ...
1. Use var: var a = []; for (var i = 0; i < 10; iPP) { a[i] = function () { console.log(i); }; } a[6](); 10 2. Use let var a = []; for (let i = 0; i < 10; iPP) { a[i] = function () { console.log(i); }; } a[6](); 6 quest...
data is like this data () { return { username: , pw: , pw2: } } then in a method of methods, is it wrong to deconstruct the assignment like this? this points to the current component. Can t I print the username ...