Small and basic library for command line parsing.

Library can parse three types of arguments

1. Normal non-switch argument e.g. file, string, etc.
2. Simple one letter character flag (Switch) using - e.g. -a, -xe, etc. -xe is same as -x -e.
3. Long switch (Option) using -- e.g. --list-all-files. Options can optionally contain values e.g. --wait 1000, --wait=1000, etc. Multiple values can be parsed e.g. --file 1.txt 2.txt, --file=1.txt --file=2.txt, etc.

Create Parser object by passing args[] as argument. switch is one letter char, option is long switch. Use empty string as option to parse non-switch argument. All methods can throw ArgumentException for bad method call.

• SwitchExists(switch) Returns true if one letter switch is parsed.
• OptionExists(option) Returns true if long switch is parsed.
• Exists(option, switch) Returns true if either option or switch is parsed. Any one argument can be optional.
• SwitchExistsOrValueIs(switch, option, value) Returns true if either switch is parsed or value is specified in option (compared with first matching option only).
• [option], GetAll(option) Returns array containing all values of matching option.
• Get(option) Returns value for first matching option. Throws KeyNotFoundException when not parsed.
• GetOr(option, default) Returns value for first matching option. Returns default value if option not parsed.