convert_cyr_string()
If you can teach convert_cyr_string() using convert_cyr_string on Asha's board, you know it. If you only know the heading, you don’t.
For convert_cyr_string(), a .php page is in play. Don’t blame it until you have traced convert_cyr_string on Asha's board.
convert_cyr_string() exists so Asha can keep convert_cyr_string on Asha's board correct in lab hour.
Asha ships convert_cyr_string() in lab hour. That is the use case worth saying.
Don’t do this with convert_cyr_string(): copy-pasting convert_cyr_string without a dry-run. Interviewers spot it in ten seconds.
After convert_cyr_string(), Asha should still remember copy-pasting convert_cyr_string without a dry-run.
Viva for convert_cyr_string(): what it is → one convert_cyr_string step Asha can write from memory → the mistake (copy-pasting convert_cyr_string without a dry-run).
Say convert_cyr_string() in one breath, then one convert_cyr_string step Asha can write from memory, then copy-pasting convert_cyr_string without a dry-run.