C++

Qt Creator IDE to Receive Version 4.7.0

Popular cross-platform C++, JavaScript and QML integrated development environment received new version with interesting functions
19 July 2018   276

Qt Development Frameworks updated Qt Creator to version 4.7.0. Now the plugin of the C ++ code model on the basis of Clang will be used by default.

According to the developers, Clang 6.0 provides full information about the problems in the code and works faster than the built-in model. The user can choose which Clang-Tidy and Clazy checks the platform should perform. If necessary, the plugin can be disabled.

In addition, new Run Test Under Cursor option allows to fast function testing. To do this, the cursor must be inside the function.

Developers have fixed several problems that programmers encountered running Qt Creator under Windows. Improved scanning MSVC compilers, which previously could block the work of the IDE.

Eliminated delays when connected to a common troubleshooting thread. In addition, it was possible to save data on network media, regardless of configuration.

Several convenient options added when working with the file system, for example, in the corresponding window you can show the folders on top. You can connect the auto-scaling function for HiDPI screens.

Programmers already using Qt Creator can get a new version by updating an already installed one. Source code and installer are available on the official website.

The creators of Qt are actively developing their development environment. In version 5.11, they plan to connect the support for Python modules.

C++

Cloudflare to Develop IPFS Gateway

According to the developers, new gateway will allow to create P2P based websites
20 September 2018   85

Cloudflare told about the IPFS gateway, which will allow creating sites based on P2P network. The company said that access to content will be done without having to install special software on the devices.

As a technology feature, Cloudflare experts note decentralization. Using a standard network scheme with servers involves physical storage of data in one place. Hacking the server or damage to communications as a result of an emergency (for example, a natural disaster) will lead to inaccessibility of information or its loss. The same is threatened with information if the server owner has decided to refuse it.

Cloudflare Network
Cloudflare Network

The IPFS gateway combines computers, on each of which some information is stored, to the worldwide network. Therefore, the inaccessibility of one computer does not mean that the content can not be viewed or downloaded. Therefore, the key differences are two:

  1. With IPFS, anyone can freely post information instead of storing it on remote servers and paying for their services.
  2. Requests for access to data are carried out using cryptographic hashing, rather than by IP address. The query data is converted to a series of letters and numbers, by which the system finds the required files. For example, the query for any information will not like "get information that is located at IP address 93.184.216.34", but the kind "get information with hash sum QmXnnyufdzAWL5CqZ2RnSNgPbvCc1ALT73s6epPrRnZ1Xy". This hash sum is part of the desired file and is on several computers.

The system automatically determines the authenticity of the file. If we take as an example a query with a hash sum QmXnnyufdzAWL5CqZ2RnSNgPbvCc1ALT73s6epPrRnZ1Xy, then when receiving the information it should remain the same. If the hash value differs, then the file has been changed. In other words, the hash-sum can be represented as a unique fingerprint:

IPFS Security
IPFS Security

Supporters of decentralization are also in a number of other companies. Mozilla employees believe that consumers should not be tied to a particular product, brand or platform. In early August 2018, developers published a version of the IoT gateway Things Gateway 0.5. In it, they realized the possibility of loading third-party icons and an interface for complex devices.