So I have done extensive PDF file manipulation using 3rd party libraries that access pdf files. I reviewed the code I had written & it is extensive & elaborate so I cannot come up with a straightforward example (unfortunately). This violates my own principles of presenting minimal , atomic examples but this should demonstrate how convoluted & uneasy & un - developer friendly some libraries (even commercial 3rd party libraries) are.
Following is a very straightforward and minimal example of how to serialize & deserialize a class in Java.
The class we will serialize & deserialize to and from XML is a Contacts class that has a map of emails & names associated with the emails.
CSS has its own columns layout property called column
A simpler way to position elements in the grid is with line-based positioning. We can place an item from column line 1 to column line 3, and row line 1 to row line 3. It will then cover four grid cells in total, spanning two column tracks and two column rows.
To start using the Flexbox model, you need to first define a flex container: A Flexible Layout must have a parent element with the display property set to flex. Direct child elements(s) of the flexible container automatically becomes flexible items. The main idea behind the flex layout is to give the container the ability to alter its items’ width/height (and order) to best fill the available space (mostly to accommodate to all kind of display devices and screen sizes).