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How Online Training Is Revolutionalizing The Corporate Landscape
Everything is transforming to the digital world. Be it a retail store or training of employees, irrespective of the industry, every business, and its aspect is finding its space online. One of the major reasons for this transformation is the ease of accessibility. When you understand you don’t need to be at a certain place to get your training, you will be more interested. This convenience is what drives online training. It is vital to keep conducting training programs for empl...
Undefined property or variable in JavaScript
JavaScript is a weak type language, and also you can use a variable or property where it's undefined. If we don't have correct ways to check whether a property or variable is defined, we may get unexpected results when we try to access the,. How can we check whether a property or variable is undefined? This is actually a somewhat tricky question. Let's start off with some facts about undefined and then see what kind of function is consistent with the ones we care about. JavaScript attaches type...
Property,Undefined,Array,JavaScript 2014-07-24 06:56:07
Solution to getKeyCode() returns 0 in Java
The getKeyChar method always returns a valid Unicode character or CHAR_UNDEFINED. Character input is reported by KEY_TYPED events: KEY_PRESSED and KEY_RELEASED events are not necessarily associated with character input. Therefore, the result of the getKeyChar method is guaranteed to be meaningful only for KEY_TYPED events.For key pressed and key released events, the getKeyCode method returns the event's keyCode. For key typed events, the getKeyCode method always returns VK_UNDEFINED....
Java,KeyCode,0,KeyListener 2011-06-06 10:38:11
JSON unmarshal in GoLang
In almost all mainstream programming languages, there is either built-in or third-party library to support parse JSON data because it is so popular for organizing and transferring data among different services. In GoLang, the built in json package also provides functions for marshalling and unmarshalling JSON data. Marshalling GoLang struct to a JSON string is relatively simple, just need to call json.Marshal(), it's a bit complicated to unmarshal an arbitrary JSON string into a GoLang struct ob...
GOLANG,JSON,UNMARSHAL,EMPTY INTERFACE 2019-11-09 21:57:30
Using public key authentication in SSH
SSH is a popular cryptographic network protocol for secure network service operation. It is frequently used in remote server login. For a system administrator or software developer, SSH is frequently used to access remote servers or development servers or testing servers etc. To login with SSH, there are different authentication mechanisms : password, public key and interactive etc. If a remote server needs to be accessed frequently, password authentication may be too troublesome as p...
LINUX,DEBUG,SSH,PUBLIC KEY 2016-09-10 05:55:46
Vim anti-patterns
The benefits of getting to grips with Vim are immense in terms of editing speed and maintaining your “flow†when you’re on a roll, whether writing code, poetry, or prose, but because the learning curve is so steep for a text editor, it’s very easy to retain habits from your time learning the editor that stick with you well into mastery. Because Vim makes you so fast and fluent, it’s especially hard to root these out because you might not even notice them...
Vim,Anti-pattern,macro,syntax 2012-02-08 10:06:15
Making Your Tech Conference Presentation, and Experience, Not Suck
Tech conferences are incredibly expensive, and not just in dollars. Even free conferences like BarCamps incur the expense of the attendee’s time. Taking time off from work or family is a hassle at the very least, and it’s time that isn’t billable. The draw of the conference boils down to those 45 minute sessions, and speaker and attendee alike should make the most of it. Speakers often start off by wasting time. They front-load the presentation with worthless informatio...
Soft skill,Tech presentation,Advice,Highlight 2011-12-20 08:50:00
Different types of keystore in Java -- JKS
JKS is Java Keystore, a proprietary keystore type designed for Java. It can be used to store private keys and certificates used for SSL communication, it cannot store secret keys however. The keytool shipped with JDKs cannot extract private keys stored on JKS. This type of keystore usually has an extension of jks. Next we will show how to operate the JKS keystore with pure Java code. Create JKS keystore The simplest method to create a JKS keystore to create an empty keystore. We can first get an...
Resolve git issue git@github.com: Permission denied (publickey)
Sometimes when clone a remote repository from github.com, you may see below error. D:\Project\Playground\GitBisect>git clone git@github.com:bradleyboy/bisectercise.git Cloning into 'bisectercise'... git@github.com: Permission denied (publickey). fatal: Could not read from remote repository. Please make sure you have the correct access rights and the repository exists. The issue occurs when there is no key on your machine which is associated with your github account. To fix the issue, please ...
GIT,GITHUB,PERMISSION DENIED,PUBLIC KEY 2019-07-12 10:10:49
Mac shortcut key cheatsheet
More and more people are using Mac computers or switch from Windows or other OS to MacOS, there are lots of shortcut keys which can help improve the work efficiency or ease operations. This post will try to list some commonly used shortcut keys in Mac. But before that, let's first know some common keys on a Mac computer keyboard. There are four major function keys: Command, Control, Option and Shift. Most of the shortcut keys will combine the functional key and other key. Basic Command key is t...
SHORTCUT,SCREENSHOT,COMMAND,SHORTCUT KEY,MACOS 2019-02-05 07:13:06
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