SEARCH KEYWORD -- Library


  Which web front-end framework to choose?

When doing web design, we often need to choose which front-end framework to use in order to provide great user experience and simplify the development. Also, compatibility problem can be solved by using front-end frameworks. Here is a list of front-end frameworks. Which one are you using? Which one do you prefer?1. Apache FlexApache Flex, is a software development kit for the development and deployment of cross-platform rich Internet applications based on the Adobe Flash platform. Initially deve...

   Web design,Front-end,Framework     2012-07-30 13:57:26

  2 million iPhone 5 sold in China in 3 days

Apple announces that since it was available in China from last Friday, iPhone 5 has been sold over 2 million units in 3 days. iPhone 5 was available for sale in China starting from 14th Dec, the price is 5288RMB and up, there are two cooperated vendors in China : China Telecom and China Unicom. They start sell iPhone 5 on their own sales channels, moreover Apple starts selling iPhone in their own Apple Store and official website. According to Tim Cook, because of the high demand of Apple product...

   iPhone 5, China, Sale     2012-12-17 12:27:59

  noConflict mechanism in jQuery

Many JavaScript frameworks like to use $ as function or variable name, jQuery is one of them. In jQuery, $ is just a reference to window.jQuery, so even if $ is deleted, window.jQuery will still be available to ensure the whole library can work normally. jQuery API design takes fully consideration of multiple frameworks conflicts, we can use jQuery.noConflict function to easily handle control. jQuery.noConflict accepts one optional boolean parameter[1] to determine whether to hand jQuery object ...

   jQuery,noConflict,$     2013-03-14 19:40:36

  A serious security vulnerability found in MySQL/MariaDB

Recently a serious security vulnerability was found in MySQL/MariaDB. It relates to the access to the database. The issue is described below.When a user connects to MariaDB/MySQL, a token (SHA over a password and a random scramble string) is calculated and compared with the expected value. Because of incorrect casting, it might've happened that the token and the expected value were considered equal, even if the memcmp() returned a non-zero value. In this case MySQL/MariaDB would think that the p...

   MySQL,MariaDB,bug,fix,password,memcmp()     2012-06-11 10:28:09

  Why init() is not recommended in Go

golangci lint Currently, the unified CI's .golangci.yml includes the gochecknoinits checker: # golangci-lint v1.46.2 # https://golangci-lint.run/usage/linters linters: disable-all: true enable: ... - gochecknoinits # Checks that no init functions are present in Go code. ref: https://github.com/leighmcculloch/gochecknoinits ... If Go code uses the init() function, the following error will occur: # golangci-lint run foo/foo.go:3:1: don't use `init` function (gochecknoinits) func i...

   GOLANG,INIT(),SYNC.ONCE,PANIC     2024-05-10 07:46:18

  new expression vs operator new in C++

In C++, there is a new mechanism for memory allocation and management. When we want to initialize an object, we can use new expression to get enough memory for storing an object and also initialize the object. When we want to create a new object, we can use new expression, for example: Obj *obj=new Obj; Basically, what the new expression does is to allocate enough memory for storing the obj object, in addition, it will initialize the object with some intial values. Also, there is an operator new...

   C++, new expression, operator new     2012-08-12 11:42:39

  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

  Email Modular Design – An Overview

Email is one of the most prevalent forms of business communication. Businesses all over the world send hundreds of email every day to communicate with their customers in a personalized, intimate way, providing useful information, special offers, records of business transactions, official news or messages and much more. Right from one or two-man projects to large Fortune 500 companies, every business entity uses emails on a daily basis to stay in touch with their base of customers. As a company g...

   email     2014-08-14 08:22:03

  Apple will shut down Ping on 30th September

What? Apple also has social networks! Yes. Unfortunately, you just heard it and it is to be shut down. In fact, Apple launched Ping not too long ago, in September 2010, it was released together with iTunes 10.Ping allows users to share with your friends the music you are listening to, and you can even share concerts and activities information, and it supports for picture and link sharing. In addition, Ping also includes the "Top Ten" list of features that can be customized, each singer and the ...

   Apple,Ping,Social network     2012-09-12 22:21:31

  Save QWidget as image

Qt library is an excellent GUI library for C++ programmers developed by Nokia and now is an open source project. Often, we may use QPainter to draw strings, lines or images on a QWidget. We can override the QWidget's paintEvent() method when we want to use QPianter object to draw something on a QWidget. If we want to save the items drawn on QWidget as image for later reference, what can we do? We can save a QWidget as an image. Here is the code for achieving this: QPixmap pixmap(this->size())...

   Qt,C++,QWidget,Image     2012-08-19 12:01:18

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