background: the existing N items need to be packed into different express parcels. when the total tax in each package is less than 50 yuan, the goods in each package will be exempt from tax . It is required to ensure that the number of parcels is as sm...
I have a paragraph in word Xxxxxxxxxxxxxxxxxxxxxxxx$ {name of tendering agency}, dididdxxxxxxxxxxxx test ${name of tendering agency}. I want to replace the ${} package variable with the actual value when reading the paragraph using poi, I cannot read...
html <div v-for="(item, index) in data" :class="[ container , { show : firstSwitchArr[index]}]"> js data: { firstSwitchArr: [true, false, false, false, false], data: data }, methods:{ switchShow(index) {...
suppose there is a compound index index_abcd, and the query statement where a = " " and b = " " and c > " " and d = " " at this time c > " " is invalid. How to optimize ?...
recently learned in front-end learning that css originally has a variety of pre post processors such as SASS, SCSS, LESS, PostCSS, CSS Modules, Stylus, etc. it feels more or less the same, but it is really dazzling in order to avoid detours, I w...
execute the following command weex platform list report the following error weex Error: Cannot find module ~ .xtoolkit node_modules weexpack bin weexpack-platform.js Environment: $ weex -v v1.3.8 - weexpack : v1.2.3 - weex-builder : v0...