structure expression造句

The user may need to enter information that failed to be identified during the type analysis phase, e . g . modifying a memory expression to an array or structure expression.
PL / I allows both of the preceding types of assignment, and also allows " structure expressions ", such as a = a + 1; where " a " is a record, or structure in PL / I terminology.
In most published work on Genetic Programming, a LISP-style tree-structured expression is directly manipulated, whereas Grammatical Evolution applies genetic operators to an integer string, subsequently mapped to a program ( or similar ) through the use of a grammar.
It's difficult to find structure expression in a sentence. 用structure expression造句挺难的