two questions: Why the length of the int4 type of postgresql can reach 10 bits, but it is set to 32 bits in the attribute The int4 type length of postgresql is set to 32 bits by default, so why can t it be modified? it is still 32 bits after modif...
Integer a = 1; Integer b = 2; Long c = 3L; c = a compiler error will result in the error that int cannot be converted to long System.out.println (compiled normally, resulting in true Why? I know that when int and long add up, they both turn i...
are all 100% wide! In the picture above, 7p solve ...
the newly installed app, will ask if push is allowed, so what can react native do to detect whether the user allows it or not? ...
give me a simple or violent means. When using mint-ui s swipe, I want to switch between webcasts by clicking the outside button (I ve written this), but I want to disable its left-to-right sliding function. What s going on? Wait on the line! ...
recently contacted more than one server, there are some problems. one server An is in Hangzhou and one server B is in the United States. With cdn, overseas users can access server B and domestic users can access server A. For example, users have to up...
event background: An exe program (designed to hang up for 24 hours to watch video) is written under . The program has a hypertext browse box embedded to open the specified URL and play the video in the URL. However, occasionally there will be buffer...