java cooperated with opencv to write a small monitoring software based on usb camera under windows system. saved on disk in the form of 8 photos per second, resulting in too many fragmented files. it takes too long to delete using the normal delete com...
PHP business interface, you need to write a detection script. Executing the script in the monitoring system can self-check, but the parameters of the interface are not fixed. How to deal with this generally? for example, the interface of an order, the ID...
it doesn t seem to work like this. 1D represents the increment of the past 24 hours, not from zero today. sum(increase(sms_count[1d])) also, how can this query be written to display increments according to the range selected by grafana s time range?...
is there an api that opens the customer service interface? ...
I have a field of type VARCHAR that has a time data stored in it, but I want to compare it with it because I only want to leave the largest time in the same data, because the format of the time data is such a data with spaces. ...
for example, multiple documents with the following format (only one is written below): [ key { "subkey1": ..., "subkey2": ..., "subkey3": ... }, { "subkey1": ..., "subkey2": ..., "subkey3&qu...
the parent element has two child elements. The two child elements need to be displayed side by side. The content of the child element on the right is not fixed. It is necessary to make the element on the left adapt to the change of the child element on ...
every time I right-click "cmder here " in the directory and open it, my cmder is in the root directory instead of in the current directory. How to solve this problem? my configuration: ...