Image Selector previews images defined in select input options. It can take as a parameter the identifier of a form select input element which has options set to the URLs of images to be picked by the user. The object can display the currently-selected image inside a preview page element. The object can also change the currently-selected image to move to the next, previous, first, last, or to any of the images in the list.
The STX ExecPipe library provides a convenient C++ interface to execute child programs connected via pipes. It is a front-end to the system calls fork(), pipe(), select(), and execv() and hides all the complexity of these low-level functions. It allows a program to build a sequence of connected children programs with the input and output of the pipe sequence redirected to a file, string, or file descriptor. The library also allows custom asynchronous data processing classes to be inserted into the pipe or placed at the source or sink of the sequence.