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A union-find (or disjoint-set) data structure is a simple data structure a partition of a number of elements into disjoint sets. Every set has a representative which can be used to distinguish it from the other sets. It is used in many algorithms, e.g. to compute minimum spanning trees via Kruskal'...

If we have a Hive meta-store associated with our HDFS cluster, Sqoop can import the data into Hive by generating and executing a CREATE TABLE statement to define the data’s layout in Hive. Importing data into Hive is as simple as adding the --hive-import option to your Sqoop command line. Impo...

Log4net is a fail-stop logging system. Fail stop means that it stops logging on an internal exception and by design does not interact with the program flow. Knowing this explains you troubleshooting log4net isn't so easy. If logging fails, your program does not notice. You see a lot of questions abo...

Suitescript 2.0 provides 4 methods to handle the search results. They have different syntax, limitations and governance, and are appropriate for different situations. We will focus here on how to access ALL search results, using each of these methods.

CSS allows to define that element contents wrap into multiple columns with gaps and rules between them. CSS Multi-column Layout Module Level 1 is, as of 12 April 2011, a W3C Candidate Recommendation. Since then, a few smaller changes were made. It is considered to be in the Stable stage. As o...

The MESSAGE statement may be used to interrupt program flow to display short messages to the user. Messages content may be defined in the program's code, in the program's text symbols, or in an independent message class defined in SE91. The maximum length of a message, including parameters pas...

This topic will demonstrate how to download files attached to a detail entity inside Acumatica ERP by using the Contract-Based API. The code snippet above was created using the Json.NET framework (Newtonsoft.Json.dll). To obtain HTTP cookie header from a SOAP response, add a reference to the ...

This topic will focus on errors caused by the processor bugs. Here are the things we would focus on the cause and the solution of the issue. In the example DEL File Extension, user X. Liu notices that this bug will not occurs when the file extension in the DEL command is less than 3 characters...

This documentation provides a way to connect to hive using SOLR Data Import Handler and index the data in SOLR. This is an interesting documentation because I couldn't find it over internet. The handler basically handles more than 80 million records which means a strong infrastructure with good CPU...

REST APIs are interesting when data should be accessed from everywhere including different languages (server and client side). That requires separation from data and processing.

Manipulators are special helper functions that help controlling input and output streams using operator >> or operator <<. They all can be included by #include <iomanip>. Manipulators can be used in other way. For example: os.width(n); equals to os << std::setw(n)...

Using the serial ports on Windows can be a bit complex. This documentation section will, in time, explain all about the use of DCBs, CreateFile(), port events, and asynchronous serial communication.

Batch files allows only 32bit integer calculations , though this can be bypassed with different approaches.

This documentation explains how an external Image can be tested and compared with the output image of OpenCV. For example, To compare two blurred images and test if they both are same, we blur an original image in an external software (I used WiT Image Processing software) or just download any blurr...

This script is designed to handle reporting devices (IoT), when a device is not previously authorized (in the devices table in the database), I add the new device to a new_devices table. I run an update query, and if affected_rows returns < 1, I insert. When I have a new device report, the first...

Here is a way of having multiple value inside of a selector in order to filter a grid.

Excel gives functions that will assist in converting from decimal to one of binary, octal and hexadecimal, and back again. Note that there are no leading 0 or 0x in the functions.

This is a cheat sheet for the Polymer 2.x library. Fork of post from Monica Dinculescu.