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NSObject is the root class of most class hierarchies in Objective-C. usually, when using NSObject objects, we will use [[NSObject alloc] init] or [NSObject new] to create object instances. Through this article, we will study the object creation process of NSObject together. initialization Call alloc mode When we call the [NSObject alloc] ...

Sparse array About the author Author introduction 🍓 Blog home page: Author URI 🍓 Introduction: high quality creator in JAVA field 🥇, A junior at school 🎓, During school, he participated in various provincial and national competitions and won a series of honors 🏆 🍓 Pay attention to me: pay attention to my learning materials and ...

pinia introduction and setup syntax 1. Basic characteristics of Pinia pinia is also a Vue state management tool, which has many similarities with vuex. In essence, he was developed by the core members of vuex team, and put forward some improvements on vuex. Compared with vuex, pinia removes the distinction between synchronous function Mutatio ...

A trip to the Empire?? content address Summary of JavaScript Foundation (I)?? https://blog.csdn.net/Augenstern_QXL/article/details/119249534 Function and scope of JavaScript Foundation (2)?? https://blog.csdn.net/Augenstern_QXL/article/details/119250991 JavaScript based objects and built-in objects (3)?? https://blog.csdn.net/Augenstern ...

1, Definition (logical structure) and basic operation (operation) of linear table Definition: a linear table is a finite sequence of n (n > = 0) data elements with the same data type, where n is the table length. When n = 0, the linear table is an empty table. If L is used to name the linear table, it is generally expressed as L = (a1 , a2 ...

catalogue object-oriented programming Classes and objects in ES6 Constructors and prototypes Object prototype__ proto__ Constructor constructor The relationship among constructor, instance and prototype object Prototype chain Extend built-in objects inherit object-oriented programming There are two major programming ideas: process ...

catalogue 1, Number? 1. isFinite() 2.?isInteger() 3. isNaN() 4. parseFloat() 5. parseInt() 2, String 1. indexOf() 2. replace() 3. search() 4. concat() 5. split() 6. slice() 7. substr() 8. substring() 9. includes() 3, Array 1. join() 2. push() 3. pop() 4. shift() 5. reverse() 6. filter() 7. forEach() 8. find() 4, Object ...

A trip to the Empire?? content address Summary of JavaScript Foundation (I)?? https://blog.csdn.net/Augenstern_QXL/article/details/119249534 Function and scope of JavaScript Foundation (2)?? https://blog.csdn.net/Augenstern_QXL/article/details/119250991 JavaScript based objects and built-in objects (3)?? https://blog.csdn.net/Augenstern ...

In this article, we will learn how to use the * args parameter to define a variable function. Tuple unpacking The following example unpacks a tuple into two variables: x, y = 10, 20 Element 10 is given variable x and element 20 is given variable y. In fact, the parameters of the function are similar: def add(x, y): return x + y add ...

1, Common skills in transfer learning: fine tuning 1.1 concept Take the weights trained on the big data set as the initialization weight of the specific task (small data set), and retrain the network (modify the full connection layer output as needed); The training methods can be: 1. Fine tune all layers; 2. Fix the weights of the front l ...