question background is now writing a firewall project based on Linux netfilter . There are some questions about the interaction between kernel and user mode programs . Program environment centos7(3.10) gcc 4.8.5 20150623 (Red Hat 4.8.5-16) (G...
as mentioned above, the requirement requires obtaining 4D information, that is, reading the plan progress in the model. We don t know much about this. At present, we only know that the plan information created by the model designer through MS project i...
problem description the company project has an interface to do a purchase function, but now it uses modal, but encountered a problem when taking the value. The form data was fetched by the componentDidMount of a big component before, but now I don ...
problem description when using BottomNavigationView as the bottom navigation bar, you want to achieve a different color state between selected and unchecked, but do not achieve the desired effect. Click on other sub-items, and the color does not chang...
An insert statement written in the JavaWeb project looks something like this customerInfo object has all the values, and none is empty. here is the add method public boolean customerInfoAdd(SendCard customerInfo){ try { sqlSes...
other phones run normally, but oppor11 enters the gallery and selects a picture. Clicking Open is useless, and it will jump back to the form page, but it does not choose to go to the above . Why is this a problem? how to solve this problem? trouble...