[First line of code--Android] A streamlined version of Kotlin's introductory tutorial

Google announced Kotlin as the official Android and development language at the I/O conference in 2017, and Android Studio also provides full support for Kotlin. How do I run kotlin's code?adopt https://try.kotlinlang.org Or IDEA and other IDEs that support Kotlin write directly on top of it, and then run away. Here's the main record of how to ...

Posted by gazolinia on Sat, 06 Jun 2020 19:57:34 +0200

Basic implementation of ActionBar and ToolBar under API29

Based on Android studio to customize the top menu bar -- the basic implementation of ActionBar and ToolBar Custom ActionBar Custom ToolBar Custom ActionBar ActionBar is a window function to determine the user's location, and it can provide the user's operation and navigation module. Using Action ...

Posted by EagerWolf on Sat, 06 Jun 2020 12:30:22 +0200

A small salary management system with JavaFX+SpringBoot + verification code function

1 General 1.1 INTRODUCTION A simple small salary management system, JavaFX + front-end Spring Boot, has few functions. It focuses on the UI and some logic of the front-end. The back-end is very simple. Main functions: User registration / login Verification code retrieve password Users modify information, modify Avatar Display salary in bar cha ...

Posted by poknam on Sat, 06 Jun 2020 12:10:57 +0200

vue - in pit - nesting route causes page Jump to empty (content of sub page is not displayed)

vue - in pit - nesting route causes page Jump to empty (page does not display content) Problems encountered vue blank page Use nested sub route to switch the page, the address bar changes, but the content of the sub page is not displayed (blank). Upper code~~ Nested sub routing code SRC - > ...

Posted by Fergusfer on Sat, 06 Jun 2020 07:57:34 +0200

Multiple Cluster Deployment Management with Istio: Single Control Plane Gateway Connection Topology

In a single control plane topology, multiple Kubernetes clusters work together to use a single Istio control plane running on one of the clusters.The control plane's ilot manages services on local and remote clusters and configures the Envoy Sidecar proxy for all clusters. Cluster-aware service routing Cluster-aware service routing capabilit ...

Posted by robert.access on Sat, 06 Jun 2020 05:49:32 +0200

Operator overloading based on C + +

The concept of operator overloading ⚫ Expressions in C + + are composed of operators and operands according to rules. For example, arithmetic operators include plus "+", minus "-", multiply "*", divide "/" and modulus "%". Without special processing, these arithmetic operators can only be used ...

Posted by The Jackel on Sat, 06 Jun 2020 05:44:40 +0200

Pandas-01-DataFrame|Series Common Methods

This paper introduces the data structure DataFrame and eries of data analysis star pack Pandas in Python, which is practical. Copyright Statement: This is an original blogger article, please indicate the source of the original text for reproducing, no white lyrics! Writing time: 2020-06-06 0:08 ...

Posted by designationlocutus on Sat, 06 Jun 2020 02:56:32 +0200

Talking about array algorithm slice

As a whitespace that has just come into contact with js, you still don't know much about the methods in the array prototype. Because you may like to change your character, you always like to dig deep into the low-level algorithm, so I'll share my slice() algorithm with you. To write an algorithm, you have to look at what the function is tryi ...

Posted by yarnold on Fri, 05 Jun 2020 18:17:28 +0200

with context management protocol

Recently, I want to simulate the implementation of a framework involving with. Let's study it! Here is a common way to write Automatically release file handle after running with open("./abc.txt","r") as f: data = f.read() #Automatically release resources after running with tf.Session() as sess: result = sess.run([product]) prin ...

Posted by talor123 on Fri, 05 Jun 2020 10:40:52 +0200

Invalid pom file after idea clones project from git

Invalid pom file after idea clones project from git When your idea pulls projects from git, projects that are cloned for the first time often report that pom files are not in maven format: as shown in the following figure This is because Maven has not been set after getting down from git. Open File ...

Posted by crazylegseddie on Fri, 05 Jun 2020 10:15:17 +0200