Fallback function to convert strings like 5:02:11 10x slower than hhmmss_to_seconds(), empty strings are converted to NA

Fallback function to convert strings like 5:02:11 10x slower than hhmmss_to_seconds(), empty strings are converted to NA

hhmmss_to_sec_split(hhmmss_str)

Arguments

hhmmss_str

string