| 词汇 | recursion |
| 释义 | recursion noun[ C or U ] specializeduk /rɪˈkɜː.ʒən/ us /rɪˈkɝː.ʒən/ mathematics, computing the practice of describing numbers, expressions, etc. in terms of the numbers, expressions, etc. that come before them in a series: （数字的）递归，递推 The function can be solved by recursion.该函数可以通过递归来解决。 Many DNS servers do not allow recursion.许多DNS服务器不允许递归。 language the practice of putting a structure such as a phrase inside a structure of the same kind: （语言的）递归性，结构嵌套 Recursion is the capacity to embed phrases inside one another.语言的递归性指的是结构嵌套的能力。 The language of the Pirahã has no evidence of recursion.皮拉罕语似乎没有递归性。 Recursion allows humans to link various parts of our experience. The idea that recursion is an essential property of human language has been challenged recently. Recursion involves embedding an expression of some type within an expression of the same type. Numerical relationships absolute difference absolute error absolute maximum absolute minimum arithmetic progression differential Fibonacci sequence geometric progression golden mean golden ratio harmonic progression iteration proportion proportionably proportional proportionally proportionately prorate prorated subset You can also find related words, phrases, and synonyms in the topics: Addition, subtraction, multiplication & division Linguistic terms & linguistic style Examples of recursionrecursion Here, applying simple recursions, h1t u ! The recursions describing the time path of bt are the same for both models, except for the value of the positive definite matrix modifying the forecast error. The semantics of the language is based on a translation, and it exploits abstract data types rather than polymorphic types and recursion. The structural aspect of recursion is almost ignored and certainly never presented as the bridge to object-oriented programming. The programmer sees only recursion equations, but the machine performs normal order graph reduction using those equations as rules. The recursion equations above can be regarded as defining functions over type expressions. Three aspects of the region calculus are highlighted as essential features: region polymorphism, region polymorphic recursion, and effect polymorphism. In this way, semantically, the linear recursion can be reduced to recursion with ground result type and substitution of parameters. As another illustration of action constructs, we consider how countable nondeterminism can be approximated by means of binary choice and recursion. In general, if we allow functional result type in a safe recursion then we can define exponentiation. However, implementations of lazy functional languages generally express recursion by a back-pointer in the function graph. I am not entirely convinced, though, that the objective to eliminate recursion is fully successful. Section 8 discusses the semantics of recursion, and section 9 discusses refinement laws and presents a small example. Since we want to be able to define recursive expressions of any type, there is no specific type construct associated with recursion. Though they couldn't be listed individually, they could result from a constructional idiom containing variables that permit recursion. See all examples of recursion These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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