Description
Creates one or more answer evaluators which check string answer(s).
Params
str is a string representing the correct answer.
Options
| Option key | Option value | Default | filters | [filter1, filter2, ...] where each filter is one of:trim_whitespace removes white space from ends of string
compress_whitespace removes white space from ends and compresses runs of whitespace to a single space.
remove_whitespace removes all white space in string
ignore_case ignores case of letters.
ignore_order ignores the order in which the letters are entered
| ['compress_whitespace','ignore_case'] |
Returns
One or more answer evaluators. The second construction creates two
answer evaluators. The default behavior ignores case, and treats runs
of white spaces as a single space.
Examples
* ANS( str_cmp(['Good bye']) will accept 'good \ \ BYE', but not 'goodbye'
* ANS(str_cmp("Hello", filters => ['ignore_order]) ) will accept 'lloeH', but not 'HEOLL'
* ANS(str_cmp("H ello",'remove_whitespace') ) will accept 'Hello' and 'H e l l o'.
* ANS(str_cmp(['Tweedle dee', 'Tweedle dum']) ) generates answer evaluators for two successive answer blanks.
Notes
If you use only one filter you can use the shortcut
ANS(str_cmp("Hello",'ignore_order')) for
ANS( str_cmp("Hello", filters =>['ignore_order'] ) )
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