Picture deletion for laravel-admin

There is a deep doubt about laravel-admin's picture upload mechanism. Deleting avatar pictures on the user information page will cause an error. It was 1.4 at that time, and later updated 1.5 found that the delete button disappeared directly. If you use image normally in the form during the process of use, the slight ...

Added by sansoo on Sat, 18 Jul 2020 17:36:44 +0300

References in Java and JNI (strong, soft, weak, virtual)

1. Strong References (Objects) Features: Strong references provide direct access to the target object. Will not be recycled. Two, soft reference (SoftReference class) Features: When GC reclaims based on JVM memory, JVM reclaims when it finds it is out of memory Conditions for freeing up space: JVM found insufficient m ...

Added by trygve on Sun, 19 Jul 2020 18:32:41 +0300

Problems with Android setPolyToPoly (2)

Problems with Android setPolyToPoly (2) Question: The question is still the last one ( Problems with Android setPolyToPoly (1) ) Problem, which was solved with hardware acceleration in the previous article, but he may have black edges around the drawn quadrilateral on some mobile phones. It is suspected that the trans ...

Added by Dominator69 on Mon, 20 Jul 2020 18:45:18 +0300

Ajax Principle & Basic Case

An Analysis of the Basic Principles of Ajax Basic concepts Asynchronous Javascript and XML. A technique for creating fast dynamic Web pages with minimal exchange with the server to update the pages Common Cases Search page displays search results without refreshing Registration page prompts for availability of items Tmall Sho ...

Added by bobdabuilder on Mon, 20 Jul 2020 19:16:36 +0300

Summarize django knowledge points

1. View functions: Request Object------------- request: 1,HttpRequest.body:) Request original data 2,HttpRequest.path:) A string representing the requested path component (without domain name)           3,HttpRequest.method             4,HttpRequest.GET           5,HttpRequest.POST           6,HttpRequest.FILES 7,HttpResquest.user:) An AUTH_U ...

Added by simon71 on Sun, 19 Jul 2020 17:54:28 +0300