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Fix issue "cannot load such file -- bcrypt_ext (LoadError)"
bcrypt() is a sophisticated and secure hash algorithm designed by The OpenBSD project for hashing passwords. The bcrypt Ruby gem provides a simple wrapper for safely handling passwords. However, sometimes the rails application would fail to start after installing the bcrypt gem on Windows. The error would look similar to below. The issue is that it fails to load the bcrypt_ext which is the native built extension, the reason may be the library is wrongly built. To fix this issue, below steps can...
RUBY,SOLUTION,RUBY ON RAILS,BCRYPT,LOAD ERROR 2017-03-05 00:21:10
Jack Ma speaks within the company's intranet post PDD earnings report
On November 28th, PinDuoDuo(PDD) released its financial report for the third quarter of 2023, ending on September 30th. The revenue for the third quarter was 688.4 billion RMB, showing a year-on-year growth of 93.9%. The net profit, according to the U.S. General Accounting Standards, reached 15.54 billion RMB, with a net profit margin of 22.6%. PDD attributed its overall positive performance to the accelerated recovery of the consumer market and the vigorous implementation of its "high-qual...
Example of less is more
Less is more is a very important design principle. It is as important as the 80:20 principle. It means that which is less complicated is often better understood and more appreciated than what is more complicated; simplicity is preferable to complexity; brevity in communication is more effective than verbosity. Next we will use an animated image to describe what is less is more. The popularity of flat design in web application design also proves the importance of less is more. Many famous compan...
Less is more,Flat design 2013-09-20 07:20:43
Google plans to deprecate FTP URL support in Chrome
Currently people can access FTP list and download resources hosted on FTP servers in Chrome through FTP URLs, but this may not work anymore in the near future. In a post published by Chrome engineers, there is a plan to deprecate FTP support in Chrome version 82. The major motivation for this deprecation is that Chrome doesn't have an encrypted FTP connection support(FTPs), this raises security risk of downloading resources over FTP. Since users can access FTP URLs and download resources, there...
VirtualBox Q&A(Host OS: Windows; Guest OS: Ubuntu)
This is a Q&A post after sharing Guide for installing Ubuntu in VirtualBox on Windows 1. If the resolution of the installed guest OS on the VirtualBox is too small(For example 640x480) and you cannot adjust it through System Settings -> Display, what should you do? A: In this case, it is mostly probably you don't have the VirtualBox Guest Additions installed. You can install the Guest Additions on your guest OS by: sudo apt-get install virtualbox-guest-dkms Then restart the VM and you wil...
VIRTUALBOX,HOST ONLY,RESOLUTION,Q&A,STATIC IP 2016-08-12 04:24:40
Tim Cook : 100 million iPads are change people's life
In today's Apple conference, Tim Cook revealed a number Apple achieved two weeks ago, Apple iPad is sold 100 million units in past 2.5 years. Moreover, the iPad brings network traffic of 91% among all network traffic in tablet PC market. In 2.5 years, Apple's iPad series have 3 members: the iPad, iPad 2 and the New iPad. Cook said the iPad's mission is to make things originally complex and confusing simpler so that even the the general children or the elderly can complete. Indeed, the iPad is ...
Fix Permission Issue for iTerm2 to Access Application Support on MacOS
In case you have a new MacOS setup (especially on the newly released Apple M4 MacBook) and you are trying to install/launch iTerm2 on your system, you may encounter an error where it complains that you don't have enough permission to access Application Support, the error message would be like There was a problem finding or creating your application support directory. iTerm2 won't work very well until this problem is fixed. It should be at ~/Library/Application Support/iTerm2. The error was...
FIX,MACOS,APPLICATION SUPPORT,ITERM2,PERMISSION ISSUE 2024-11-17 13:09:11
Use of Erlang in WhatsApp
After many years, people are still discussing whether Erlang is a small language. People have all sorts of doubt about it, but with the appearance of WhatsApp, we may change our mind. What is WhatsApp, from its official website: WhatsApp Messenger is a cross-platform mobile messaging app which allows you to exchange messages without having to pay for SMS. The more funny thing is the main developer of WhatsApp Rick Reed worked in Yahoo and SGI before he joined WhatsApp and he didn't have any know...
Erlang,WhatsApp,Architecture 2013-06-16 03:03:46
China has 591 million netizens now
CNNIC(China Internet Network Information Center() released its 32nd research report on Internet usage in China on July 17 Beijing Time. According to the report, China has 591 million netizens until June 2013, among them 464 million are phone Internet users. Chinese netizens surf the Internet 21.7 hours a week. The report shows that China's netizens reached 591 million as of the end of June 2013, an increase of 26.56 million people compared to the end of 2012. Internet coverage rate is 44...
CNNICInternet usage 2013-07-18 02:27:52
10 major updates of Windows 8.1
Last night, the 2013 Microsoft Build Developer Conference started in San Francisco. The highlight of the first day is Microsoft CEO Steve Ballmer announced the release of Windows 8.1 Preview . The final version will be released in November and he also mentioned that there would be over 300 updates on the new OS. Now let's summarize 10 major updates of the new OS. 1. Classical desktop mode After getting a lot of feedback from users, Microsoft adds a new setting. Users can choose to start in clas...
Windows 8.1,Build 2013-06-27 05:45:02
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