Programmer Think

C + + learning notes (1) Siddhartha Rao, 21st day learning C + + (8th Edition) auto Auto auto inference type (new in C++11) //Initialization is required when using auto auto largeNumber = 25000000000000; //The compiler determines the appropriate value according to the initial value, which should be long long here auto iteration int ...

1, Binding method 1. Object binding method First, let's make it clear that all methods or functions in a class are bound to objects by default. Next, we will slowly analyze the application of binding methods through examples. class People: def __init__(self,name,age): self.name = name self.age = age def talk(self): ...

catalogue preface thread Thread creation and startup Inherit Java Lang.Thread class Implement Runnable interface Implement Callable interface Static proxy Lambda expression Functional interface last preface I don't know if you have ever thought about why so many people can play together at the same time when we play the glory of t ...

Ramble Yesterday, I happened to encounter a small problem with enumeration, and then found that I am not so familiar with it. Then in development, enumeration is used very much, so I have today's article. What is enumeration Enumeration in Java is a type, just as the name suggests: it is enumerated one by one. Therefore, it generally represe ...

1, Overview We know that in HashMap, the location of a key value pair stored in the internal data of HashMap is related to the hashCode value of K, which is also because the hash algorithm of HashMap is based on the hashCode value. Three concepts should be distinguished here: hashCode value, hash value, hash method and array subscript hashCo ...

1. Method definition and call So what is the method? A method is essentially a block of codeSo what is the significance of the method? After defining a method, you can call it repeatedly in different positions, so you don't need to write the same piece of code repeatedly. 1. Method definition and calling syntax Method definition syntax ...

3. Common sorting algorithms   learning objective: master common sorting algorithms.   introduction to algorithm: Sort   / / sort the elements in the containerrandom_shuffle    / / shuffle and randomly adjust the order of elements within the specified rangeMerge   / / merge container elements and store them ...

1.print print information with color You know the print function in Python. Generally, we will use it to print something as a simple debugging. But you know, the font color printed by Print can be set. A small example def esc(code=0): return f'\033[{code}m' print(esc('31;1;0') + 'Error:'+esc()+'important') After running this code on the ...

preface❤️ How much talent a person has, how much humility will be engraved in his bones ❤️ 1, JavaScript event advanced (1) Registration event (binding event) 1.1 overview of registration events one ️⃣ Adding an event to an element is called a registration event or a binding event. two ️⃣ There are two ways to register events: traditi ...

Build basic script When creating a shell script, you must specify the shell to be used in the first line of the file. Its format is: #!/bin/bash environment variable Example: #!/bin/bash #display user information from the system echo "User info for userid: $USER" echo UID: $UID echo HOME: $HOME User variable The user variable can be any ...