Check current args entry against opt string parsing as int. If opt matches exactly, take the next arg as an int value; if it matches as a prefix (equal sign optional), take the remainder of the arg as a int value; otherwise return 0.
See Implementation
Check current args entry against opt string parsing as int. If opt matches exactly, take the next arg as an int value; if it matches as a prefix (equal sign optional), take the remainder of the arg as a int value; otherwise return 0.