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{$)"]; results = [cars filteredarrayusingpredicate:predicate]; NSLog (@ "%@", results); predicate = [Nspredicate predicatewithformat: @ "name in {' Herbie ', ' snugs ', ' Badger ', ' Flap '}"]; results = [cars filteredarrayusingpredicate:predicate]; NSLog (@ "%@", [Results Valueforkey: @ "name"]);⑦. String OperatorsBeginswith EN

want to be bound by the framework defined by the interface, but turn to abstract base classes. This involves the factory method mode that is widely used in. NET 2.0. It is essentially a configurable Abstract Factory mode. (This is the topic of my other article) If you are not quite clear, please refer to my article on interface development. Part II. Implementation: an abstract automobile factory. Part2. implementation: an abstract automobile factory. Loosely based on an article at Wikipedia on

heard of my speech knows that I love analogy (although sometimes it is bad), and it is no exception here. Note: The examples here are all set by humans. We will talk about some real scenarios later in this article. If we want to answer this question: "How many red cars are parked in the parking lot behind your office ?", The physical and relational database methods can be used to answer the following question: Physical Mode Relational Dat

Iqcar games are briefly introduced above. Next we will describe how to use a computer to find its solution. After learning the data structure, the first thought is to use "Deep Priority Search" or "breadth first ".Algorithm". Is to keep trying every possibility until the solution is reached. Then, output the attempt process. After carefully observing the picture above, we found that each vehicle is unlikely to be in place (because the car can only move forward and backward, there are only four

OOP Technology manages complex things according to the characteristics of the real world, abstracts them into objects, has its own state and behavior, and accomplishes certain tasks by reacting to the message. This programming method provides a very powerful variety, greatly increases the reuse of code, increases the speed of program development, and reduces the maintenance burden, the independent special-purpose program code is packaged, and the modification of some program code does not affect

This article mainly introduces the information and examples of the for loop in the basic Javascript tutorial. for more information, see if you want to run the same code over and over again, and each time the values are different, it is very convenient to use the loop. The Code is as follows: Document. write (cars [0] +"");Document. write (cars [1] +"");Document. write (

This article mainly introduces the usage of tag statements in JavaScript. The example analyzes the functions, definitions, and related usage skills of tag statements, you can refer to the examples in this article to analyze the usage of tag statements in JavaScript. Share it with you for your reference. The specific analysis is as follows: Recently I am reading w3school, And then I see the js section, 《script》cars=["BMW","Volvo","Saab","Ford"];list:

Problem:A ferry, there is a ferry, transport cars to the opposite, can transport n vehicles, to the opposite to T minutes, return to T minutes, altogether to M car.Given m data, is the time to reach the ferry. The shortest time to get all the cars to the opposite side is the shortest, the number of times is how much (time from 0).Idea: Greed.Consider three types of situations (or two).One: N>m. The shortest

Warning: This article is intended only for study reference purposes. do not use it for illegal purposes. In the previous article "Mobike unofficial big data analysis", I mentioned my data analysis on Mobike during the Spring Festival, in subsequent articles, I will further explain how my crawlers can efficiently crawl these data. Why is Mobai's data Mobai the first bike sharing in Chengdu? every day when I get down from the subway station, I can see many bicycles in the APP, but when I get there

Relocation Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 2631 Accepted: 1075 DescriptionEmma and Eric is moving to their new house they bought after returning from their honeymoon. Fortunately, they has a few friends helping them relocate. To move the furniture, they only has the compact cars, which complicates everything a bit. Since the furniture does not fit into the