problem description Design a purchase, sale and inventory system for a medium-sized multi-store seller; in order to improve sales opportunities and reduce the production of expired goods, items will be transferred back and forth among multiple stores...
the following process works fine on phones that are not in the Android O system version, and works well when Android O connects to USB2.0, only when Android O connects to USB3.0 3.1 The sending and receiving of the first instruction is normal, but the s...
var I is a variable, var arr = []; I want to implement that I is a number, so I add the empty object {name: } of name to my empty array a few times. for example, if I is 1 , then arr = [{name: }] such as I is 2 arr = [{name: }, {name: }]...
there is a blog that explains the password mode as follows: password mode (resource owner password credentials): the user provides his user name and password on the authorization server to the third-party client, and the client requests the token (Ac...
in the case of writing css, two elements are arranged horizontally, such as the arrow and title in the figure. I wonder if flex can center them one to the right and the other . the current method I use is that the parent element block and then the arro...
In the company s project, as the response of iterating some operations becomes slower and slower, the slowest time an operation can have is more than 550ms . want to optimize it, but Mengxin doesn t know exactly where to start. I also want to ask ...