how is it convenient to define a slice, if you want to determine whether the key is in the slice? The code is as follows: func main () { urls := []string{ "https: www.aaa.com", "https: www.bbb.com", "https: www...
function ArrayOf(){ return [].slice.call(arguments); } this function implements the conversion of arguments to an array. but I have a question: isn t this call () method the first parameter that points to the this object? Why is it that in this e...
encountered a problem today $sql = $mysqli->query( "SELECT .... " ); I have a query that I want to apply to two while, but only the first one has a response <? while ($row = mysqli_fetch_array($sql)){ ?> ...
I just came into contact with a project. There are two datetimebox fields: new time and modification time in datgrid. When I double-click the row to enter the edit interface, these two fields get the current year, month and day, instead of the field dat...
if you want to build a gitlab, you don t want to use someone else s server, just like your own. Many great gods on the Internet say they have built it. but I don t know much about this. I m a front-end player. Linux knows and has deployed some web...
I use tomcat to start a project on win10. Local computer access is easy. Sending url to a mobile phone will not open it. I would like to ask how to enable the external network to access local projects ....
problem description vue-router.js?dfba:1800 Uncaught TypeError: Cannot read property component of undefined the environmental background of the problems and what methods you have tried everything is loaded in that browser! I have tried that th...