typing | 易学教程

HDOJ---2577 How to Type[DP（两个DP数组）]

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How to Type Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 1855 Accepted Submission(s): 876 Problem Description Pirates have finished developing the typing software. He called Cathy to test his typing software. She is good at thinking. After testing for several days, she finds that if she types a string by some ways, she will type the key at least. But she has a bad habit that if the caps lock is on, she must turn off it, after she finishes typing. Now she wants to know the smallest times of typing the key to finish typing a string. Input

HDU 2577 How to Type (线性dp)

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How to Type Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 4616 Accepted Submission(s): 2084 Problem Description Pirates have finished developing the typing software. He called Cathy to test his typing software. She is good at thinking. After testing for several days, she finds that if she types a string by some ways, she will type the key at least. But she has a bad habit that if the caps lock is on, she must turn off it, after she finishes typing. Now she wants to know the smallest times of typing the key to finish typing a string. Input

typing-python用于类型注解的库

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简介动态语言的灵活性使其在做一些工具，脚本时非常方便，但是同时也给大型项目的开发带来了一些麻烦。自python3.5开始，PEP484为python引入了类型注解(type hints),虽然在 pep3107 定义了函数注释(function annotation)的语法,但仍然故意留下了一些未定义的行为.现在已经拥有许多对于静态类型的分析的第三方工具,而pep484引入了一个模块来提供这些工具，同时还规定一些不能使用注释(annoation)的情况 #一个典型的函数注释例子，为参数加上了类型 def greeting(name: str) -> str: return 'Hello ' + name 伴随着python3.6的pep526则更进一步引入了对变量类型的声明，和在以前我们只能在注释中对变量的类型进行说明 # 使用注释来标明变量类型 primes = [] # type:list[int] captain = ... #type:str class Starship: stats = {} #type:Dict[str,int] primes:List[int] = [] captain:str #Note: no initial value class Starship: stats: ClassVar[Dict[str,int]] = {} typing-

extracting data from typing types

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问题 I am having some issues working with the typing types in Python for any more than type hinting: >>> from typing import List >>> string_list = ['nobody', 'expects', 'the', 'spanish', 'inqusition'] >>> string_list_class = List[str] Now I would like to Check if string_list conforms to string_list_class . Check if string_list_class is a list. If so, check the class, that string_list_class is a list of. I find myself unable to achieve any of those: >>> isinstance(string_list, string_list_class)

What is Scala trying to tell me and how do I fix this? [ required: java.util.List[?0] where type ?0]

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问题 I am in the process of learning Scala and today I felt confident to introduce it to one of our projects. The application does a lot of JPA / Hibernate stuff and I started implementing one of the Java interfaces in Scala. All went well, until I tried to translate some unittest-code to Scala. I make a lot of use of Easymock, the code is quite self explanatory. I guess the problem is, that Scala does not allow me to return a typed java.util.List where it expects an untyped one. Unfortunately I

How do you simulate typing using jQuery?

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问题 Like how the click() can be used to trigger a click event on an element, is there any way to simulate the typing of a string? 回答1: Are you looking for a way to trigger the events associated with typing or do you want to append text to a container so that it looks like someone is typing? If you're looking for the events, then @Nick is absolutely correct in suggesting the methods for triggering the event. If the latter, you'll want to use a timer to replace the text/html of the container with

How do you simulate typing using jQuery?

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How to Type(dp)

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How to Type Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 5305 Accepted Submission(s): 2382 Problem Description Pirates have finished developing the typing software. He called Cathy to test his typing software. She is good at thinking. After testing for several days, she finds that if she types a string by some ways, she will type the key at least. But she has a bad habit that if the caps lock is on, she must turn off it, after she finishes typing. Now she wants to know the smallest times of typing the key to finish typing a string. Input

How to reduce boilerplate when initializating classes from JSONs in Python 3.5?

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问题 I have a set of python webservices that work with data objects they get via a JSON POSTs. In my old services I have a lot of boilerplate to (de)serialize and check JSONs for each object. With Python 3.5s new typing and PEP 484 I have the feeling that could be substantially reduced. Is it worth it? Does anyone have a good solution for it? Additional info My old boilerplate looks like this for every object: class Data: class Nested1: def __init__(self, nested1_flat1): self.nested1_flat1 =

Does Scala have a value restriction like ML, if not then why?

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问题 Here’s my thoughts on the question. Can anyone confirm, deny, or elaborate? I wrote: Scala doesn’t unify covariant List[A] with a GLB ⊤ assigned to List[Int] , bcz afaics in subtyping “biunification” the direction of assignment matters. Thus None must have type Option[⊥] (i.e. Option[Nothing] ), ditto Nil type List[Nothing] which can’t accept assignment from an Option[Int] or List[Int] respectively. So the value restriction problem originates from directionless unification and global