how to convert a string to an enumerated type in cPP? for example: enum City{ BEIJING, SHANGHAI, GUANGZHOU } City string_to_enmu(string str,City c); ...
specifically, there are user member table, course course table, user purchase record member_course table, but you need to pay after purchase, so is it necessary to create another Order table to record users purchases? If necessary, why? my idea is t...
I want to achieve the effect of magnification and disappearance. alpha setting transparency from 1 to 0 works but no matter how scale is set, it doesn t work. I don t know what went wrong. Ask God for help function initAnimation(){ delay=0.1 1...
all I want is to convert the file into commonjs so that it can be easily referenced under node, instead of using webpack to package the whole project into the same file babel has a plug-in for converting transform-es2015-modules-commonjs, but this plu...
use axios for registration, use graphic verification code to verify whether it is correct, cannot be verified correctly, 1. Get the graphic verification code first this.$http({ method: get , url: this.api + app platform getImgCo...