Breadcrumbs navigation using QToolBar and QListView
问题 I have JSON data something like this {"books":{ "web":{ "front-end":{ "html":["the missing manual", "core html5 canvas"], "css":["css pocket reference", "css in depth"], "js":["you don't know js", "eloquent javascript"] }, "back-end":{ "php":["modern php", "php web services"], "python":["dive into python", "python for everybody", "Think Python", "Effective Python", "Fluent Python"] } }, "database":{ "sql":{ "mysql":["mysql in a nutshell", "mysql cookbook"], "postgresql":["postgresql up and