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HTML5 photo taking and uploading app implementation
Underthe support of HTML5 standard, Building Web App to take photos is now possible.I will elaborate on how to take photos using Web App, display them on the pageand upload them to the server. 1. Videostream HTML5 TheMedia Capture API provides the programmable access to video camera on phones, users canuse the getUserMedia() method to get the video stream provided by video camera.What we need to do is to add a HTML <video> tag and make the videostrea...
HTML5,Photo taking,Media Capture API ,Implementation 2012-03-15 07:19:49
A guide on installing and running Clickhouse on macOS
ClickHouse is a high-performance open-source columnar database management system developed by Yandex. Here are some of the key features of ClickHouse: Columnar storage: ClickHouse uses a columnar storage format, which allows it to efficiently store and retrieve data by column, rather than by row. This results in much faster query performance, especially for analytical and aggregate queries. Real-time data processing: ClickHouse is designed to handle real-time data processing and can handle bill...
CLICKHOUSE,MACOS 2023-02-15 06:04:55
Dos and Don’ts in Test automation in your project
Test automation is a vital step for any digital solution. With time, its architecture gets more complex, new features are added, and it acquires more users. Thus, your QA team needs to spend more time and effort to ensure the application usability and smooth user experience with no bugs and defects. So here are the things you need to consider before the start of the automation initiative: Define Success Metrics It’s hard to measure success until you haven’t set up clear goals from t...
TESTING,TEST AUTOMATION 2021-01-12 05:57:45
Guide for installing Ubuntu in VirtualBox on Windows
Have you ever tried to have two OSs installed on your PC? Do you want to try out the new Ubuntu system? If you do want to use Ubuntu when at the same time you are using Windows, you may want to install your Ubuntu in an VirtualBox. In this post, we will show you how to install Ubuntu in VirtualBox on Windows. Pre-requisites VirtualBox -- You can download it from Oracle. Ubuntu -- You can download it from here. Please note it should be an ISO file The Ubuntu used in this post is Ubuntu 12.04 LT...
Ubuntu,Windows,VirtualBox 2014-01-15 03:21:05
A simple way to remove the small arrow on on desktop application shortcut
Maybe many of us will see a small arrow on desktop application shortcut after we install the application on Windows. Some may like it but some people may think it doesn't look beautiful enough. We may need to remove these small arrows somehow the desktop can be clean. So how? Many people may use a third party software to remove the small arrows, then they must go to download the software and install them. But do we necessary do this in order to remove the small arrow?The answer is no. Here I ...
Small Arrow,Shortcut,Desktop,Application,Windows 2014-10-25 08:39:58
Create animated refresh button in Android
In Android, we can have drawings on a button, also we can put animated drawings on a button as well. Today we will show how to create an animated refresh button with an animated spinner on it. We need to create an animated drawing first. Here we name it as progress.xml and put it in the res/drawable folder: <?xml version="1.0" encoding="utf-8"?><animation-list xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/spin_refresh" android:oneshot="fal...
Animation,Spinner,Refresh button,Android 2012-11-02 11:51:41
The 7 stages of refactoring
You have wanted to fix that module for ages. Just one look at it and you cringe. The documentation, the weird naming of functions, classes that are just plain weird. The module hobbeles along, but it is just plain dirty. The real programmer in you cringe, and when there finally is some time to refactor the module, you jump at it. Step 1 - Desperation So you start to have a real good look at what you need to. Fix a class here, rename a few functions there, tear out a few function...
Refactoring,Software,Desperation 2011-08-16 08:35:57
C programming tips in SPARC architecture
If you are a newbie of C programmers in SPARC architecture (For example, working on Solaris), you should pay attention to the following tips:(1) By default, SPARC is big-endian (For Endianness, you can refer http://en.wikipedia.org/wiki/Endianness). It means for an integer (short, int, long, etc), the MSB will be stored in the lower address, while the LSB will be stored in the higher address. (2) SPARC requires byte-alignment. It means for a short (2 bytes long) variable, the star...
C 2014-06-01 03:56:30
Use Memory Analyzer Tool in Eclipse
When developing applications, we often encounter memory issues of an application. To analyze how much memory each class takes, we need to have some specific tools to assist us. One of them is Memory Analyzer Tool on Eclipse. The Eclipse Memory Analyzer is a fast and feature-rich Java heap analyzer that helps you find memory leaks and reduce memory consumption. To use the Memory Analyzer Tool, you first need to install it on Eclipse. You can go to Help -> Install New Software.... Paste h...
Memory analyzer tool, Eclipse,heap dump, HPROF 2014-10-28 07:22:35
Some measures for improving Linux server security
The hackers often exploit server weakness to gain access control to some servers. With a scanner, aimlessly looking undefended host, backdoor, control, and sold to people in need. Some basic security measures can be taken on Linux servers to avoid being attacked by hackers. Disable root remote login As the default administrative account, root is the account which is most likely to be attacked.Disabling ssh remote login is necessary. Method: Edit / etc / ssh / sshd_config PermitRootLogin no At t...
Linux server,Server security 2012-08-21 05:08:50
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