Programmer Group

1. ByteArrayInputStream stream definition API Note: ByteArrayInputStream contains an internal buffer that contains bytes that can be read from the stream, the internal counter tracks the next byte provided by the read method, closing the ByteArrayInputStream stream is invalid, and methods that call classes after closing the st ...

Article directory 1. Master the NumPy array object ndarray 1.1. Array attribute: ndarray (array) is a multidimensional array that stores a single data type. 1.2 array creation 1.2.1 reset shape attribute of array 1.2.2 create an array using the range function 1.2.3 using linspace function to create ...

What is partition table Partition is to decompose a table into smaller and more manageable parts according to certain rules. Logically, there is only one table, but in fact, the table may be composed of N physical partition objects. Each partition is an independent object, which can be processed independently and as a part of the table. Smal ...

Article directory Code reuse and function writing Benefits of code reuse cost reliability Uniformity Use the require() function and the include() function require() function -- introduce code require() function -- making web site template Use auto prepend file and auto append file Using PHP func ...

OpenGL Experiment 1 OpenGL (English: Open Graphics Library) is a cross language, cross platform application programming interface (API) for rendering 2D, 3D vector graphics. This interface consists of nearly 350 different function calls, which are used to draw from simple graphics bits to complex 3D s ...

I. Preface At the beginning of writing the third person control, we used WASD to control the role in the computer test Later, it needed to be released to the mobile phone, so a rocker was added The code of keyboard control role has been written. The role moves in eight directions 2, Traditional cont ...

C programming (Fifth Edition) Tan Haoqiang -- Chapter four exercises after class 4. There are three integers a, B and C, which are input by keyboard and output the largest number. #include<stdio.h> #include<math.h> #include<stdlib.h> int main(){ int a,b,c; printf("Please ente ...

[example 2.1] try to simulate the input and output waveforms of an amplitude modulation system. Suppose that the input modulated signal is a cosine wave with an amplitude of 2v and a frequency of 1000Hz, the modulation system is 0.5, and the modulated carrier signal is a cosine wave with an amplitude ...

I. actual purpose Use all kinds of functions to operate data, and master the functions and use methods of all kinds of functions. II. Actual operation process 1 use the math function RAND() to generate 3 random integers within 10. The random number generated by the RAND() function is between 0 an ...

Article directory CountDownLatch Use example Source code analysis CyclicBarrier Semaphore summary This article is the last one in AQS series. In the first one, we analyzed the core of AQS through ReentrantLock fair lock. In the second one, we explained the Condition and the use of thread interru ...