Of course, the previous example could easily have been coded using a couple of integer variables and calling x += increment on them. Let's look at a second example where coroutines actually save us some code. This example is a somewhat simplified (for pedagogical reasons) version of a problem I had to solve while working at Facebook.
The Linux kernel log contains lines that look almost, but not quite entirely, unlike this:
unrelated log messages sd 0:0:0:0 Attached Disk Drive unrelated log messages sd 0:0:0:0 (SERIAL=ZZ12345) unrelated log messages sd 0:0:0:0 [sda] Options unrelated log messages XFS ERROR [sda] unrelated log messages sd 2:0:0:1 Attached Disk Drive unrelated log messages sd 2:0:0:1 (SERIAL=ZZ67890) unrelated ...
