system: ubuntu 18.04 QT version: 4.8.5 (due to arm runner requirements) first executed sudo . configure -prefix usr local Trolltech QtEmbedded-4.6.3-arm -shared -release -opensource -little-endian -embedded arm -no-qt3support -lrt -xplatform qws li...
I ve tried ver. 1.64.0. Cross-compilation for aarch64 boost uses version 1.64.0; cross-compilation uses platform centos 7, and the target platform is aarch64; cross-compilation tool . first step: . bootstrap.sh step 2: modify the project-config...
as shown in the figure, I want to find the desired object with a specific id and be able to assign values to its contents. it is known that you can use underscore_.findewhere but want to know how everyone does it? How to write 0 0 in js native da...
how to set the button at this moment can not display ...
I didn t want to register repeatedly, but wanted to integrate into a microservice, so I began to search, think, and design, but I encountered a key problem as I walked: where should I put my user data? the reason for this confusion is to consider t...
Let s go to the code directly. There are the following situations: read the contents of the file test.txt, and the test.txt content is a Chinese character string: a little dripping . $homepage = file_get_contents( test.txt ); $homepage = mb_convert...
In Java, I need a value to represent undefined (undefined state), which is used in a streaming check set, and null itself has a special meaning. I hope that the undefined ungiven value in the flow is equivalent to null, but it can also be judged that ...