Java 8 Actual Warfare - Book Notes Chapter 1 (02)

From Method to Lambda Then the last Predicate, let's go ahead and see if we continue to simplify the code. It's useful to pass methods as values, but it's a bit annoying if there are a lot of things like isHeavyApple and isGreenApple that might define a bunch of methods only once or twice. To solve this problem, Java 8 introduces a new notation ...

Posted by Richter on Wed, 08 May 2019 07:25:04 +0200

Customizing Streaming Layout of ViewGroup Exercises

Customize the ViewGroup, write your own View inherited from the ViewGroup, and then rewrite its onMeasure and onLayout methods. The onMeasure measurement phase consists of three steps Loop call the measure method of the child view, measure the width of the child view and save it Determine your own width and height by the width ...

Posted by koencalliauw on Wed, 08 May 2019 01:25:03 +0200

LVN and Its Implementation on Linux

Reference material: LVM Details - Junma Jinlong - Blog Garden How to reduce the size of an LVM partition formatted with xfs filesystem on CentOS7? Brother Junma's blog will go a little deeper, and he is based on ext filesystem to demonstrate expansion and scaling, while I use xfs filesystem. Basic concepts Traditional disk partitioning ...

Posted by rakhi on Tue, 07 May 2019 20:15:04 +0200

Studying “ Huaxiao ” Should it be used or not?

How to use data mining "flower choke" in the end should not be used? Based on Monte Carlo principle: If all the expenditure in that month is paid by the flower, when the arrears of the flower in that month are greater than the expendable income in that month, it will "eat dirt". _Budget design 120 months ...

Posted by Matt Kindig on Tue, 07 May 2019 03:45:04 +0200

Redis 7000w+ keys && 16G memory 100% repair experience

cause We always use redis of Aliyun. We are not a high concurrent application. We mainly use redis as distributed locks and a small amount of caches. It hardly needs maintenance. Yesterday afternoon, we suddenly received an alarm email. On-line redis memory is used 100% and instantaneous nerve tension sensation is confirmed by console.This is a ...

Posted by jim_de_bo on Mon, 06 May 2019 15:00:04 +0200

HDU 1811 Rank of Tetris

Topic link: http://acm.hdu.edu.cn/showproblem.php?pid=1811 Title: Given a digraph of n points, tell you the relationship of m (a,b,c)(a,b,c)(a,b,c). A, C denotes node number, B belongs to'>','<','=', in one of the three types,'>'denotes a rank higher than c, less than C rank higher than a', ='indicates that the rank ...

Posted by m!tCh on Mon, 06 May 2019 09:55:04 +0200

How to create an application package (C++)

Notes If you want to create a UWP application package, see Creating an application package using the MakeAppx.exe tool.   Learn how to use the Packaging API to create application packages for Windows App Store applications. If you want to manually create a desktop application package, you can also use the MakeAppx.exe tool, which uses t ...

Posted by mannyee on Mon, 06 May 2019 01:00:04 +0200

Lesson 086: Pygame: Collision Detection | Learning Records

Today we are going to learn collision detection. Most games need to do collision detection because you need to know whether the ball collided, whether the bullet hit the target, whether the protagonist stepped on the shit. How should that be achieved? To put it bluntly, the principle is simple, that is, to detect whether there i ...

Posted by TreeNode on Sun, 05 May 2019 15:48:04 +0200