scene description If the cycle processes some data and fails to process one, record the current offset to meta.txt , so that after the program exception stops, the last offset is read after the program is restarted next time, and the processing c...
when I got the background data, at first I thought it was better to use for in to traverse, but I regretted it after using it. console.logscope.row this is to request the Gold member backstage to return to me, showing the Gold member role, this...
when you connect to a database using navicat of mac version, only three tables in a database will be jammed, and all other tables will be normal, but the same three tables will not be jammed when accessed with navicat in windows environment. Why? Do you ...
as shown in the figure, the whole list is looped out by wx:for. You want to click on the small picture on the right (the small picture is also looped out by wx:for) to add a border color to the picture, and the big image on the left is changed to the...
after starting the framework to crawl the target web page start_url, you need to extract an eigenvalue from the string start_url as the collection name of the MongoDB database, and then store the item through pipeline. outline flow: spiderpipeline ...
has obtained a canvas, and then downloaded and saved it, but the result part cannot be downloaded. the size of the picture is 4m, while it is said online that the href length of an is limited. how to download function aa(src,imgname){ var alink=d...