optional nghĩa là gì

Ví dụ về optional

• We show how to extend any existing parser combinator library with support for parsing permutations of typed, potentially optional elements.

• The final (optional) element of the sequence gives the values of the syntactic functions, adjuncts and specifiers (in any order, distinguished by their role names).

• Take is usually a transitive verb, yet although it has an obligatory direct-object argument, locative arguments are normally optional.

• For these children, then, we have no reason to suspect that agreement was an optional element in the children's grammars.

• The only exceptions are found at the word-level, where optional rule application can be systematic in certain grammars.

• In section 3.2, we develop an implementation for permutations without optional elements, and in section 3.3 extend this solution to cover optionality.

• One-quarter of the states lacked any special program for the poor elderly, and some states with such programs made them county optional.

• A postgraduate diploma option can be obtained after completion of the core and optional modules or a master's degree after an additional research project dissertation.