Programming languages and software development
Eclipse’s IDE capabilities make it useful for managing larger codebases, especially those version-controlled with Git. The Quick Diff feature lets you see at a glance which lines differ from your last commit—essential when reviewing your work before staging changes. Enable Quick Diff in Eclipse Open Eclipse and navigate to Window → Preferences. This opens the…
Go’s standard library provides everything needed to generate RSA key pairs and save them in PEM format. Here are the essential packages: crypto/rsa — Implements RSA encryption per PKCS #1 and RFC 8017. The GenerateKey() function creates a keypair of specified bit size. crypto/rand — Provides Reader, a cryptographically secure random source. On Linux, it…
Google Docs comments are invaluable for collaborative work, but the web interface doesn’t provide a native way to print them in document margins. The most reliable approach is to export the document and use LibreOffice or Microsoft Word to handle the layout. Download the Document from Google Docs Open your Google Doc and go to…
Comments and tracked changes are essential features for collaborative document work in LibreOffice. Both ODT and DOCX/DOC formats preserve comments and revisions, but controlling how they appear in printed output requires specific configuration. Accessing the Print Comments Settings To print comments in the page margins: Open your document in LibreOffice Writer Go to File >…
Git tracks every commit, allowing you to inspect the full change history of a repository. However, this history accumulates storage overhead—especially problematic when large files were accidentally committed. If you need to discard all history and keep only the current code state, you can rebuild a branch with a single commit. This approach works by…
Git submodules let you keep a Git repository as a subdirectory of another Git repository. When they get into a bad state—detached HEAD, local changes, merge conflicts—you need a clean reset. The complete deinit and reinit method This is the most thorough approach. It removes all submodule state and rebuilds from scratch: git submodule deinit…
The simplest way to install R on macOS is through Homebrew: brew install r If you don’t have Homebrew installed, install it first from https://brew.sh. Verify the installation by launching R from the terminal: R You should see the R version and prompt. To verify everything works, run a quick demo: demo(graphics) q() Type n…
Converting integers to strings is a frequent operation in C++ programs. Modern C++ provides several approaches, each with different trade-offs in simplicity, performance, and flexibility. Using std::to_string() (Recommended) The standard library function std::to_string() (C++11 and later) is the most straightforward approach for most use cases: #include <iostream> #include <string> int main() { int n =…
RSS feed readers have become essential for staying on top of content from multiple sources. If you’re switching from Feedly to Follow.it, the migration is straightforward — both services support OPML (Outline Processor Markup Language), a standard format for exporting and importing feed lists. Export Your Feed List from Feedly Feedly makes exporting your feeds…
Start by updating your package manager and installing R: sudo apt update sudo apt install r-base This installs the base R distribution from Ubuntu’s default repositories. For more details on R installation, see the dedicated R installation guide. Install RStudio Desktop Once R is installed, you can add RStudio Desktop as your local IDE. Download…
R is a language and environment for statistical computing and graphics. It’s free software under the GPL license and provides extensive statistical and graphical capabilities through numerous contributed packages. The R environment package is available in Ubuntu’s standard repositories. Install it with: sudo apt update sudo apt install r-base This installs r-base along with recommended…
Accidentally pushing a tag to a remote repository happens frequently. Whether you tagged the wrong commit, used an incorrect version number, or triggered an unintended CI/CD pipeline, you need a clean way to remove it. The Basic Command Delete a remote tag using git push with the –delete flag: git push origin –delete <tagname> For…
Counting words in a file is a straightforward task in PHP, but the approach varies depending on file size and memory constraints. Here are the most practical methods. Simple Approach with str_word_count() For small to medium files, load the entire file and use str_word_count(): $content = file_get_contents(‘myfile.txt’); $wordCount = str_word_count($content); echo “Total words: $wordCount\n”; This…
DNF and YUM automatically download RPM packages and their dependencies during installation. If you need to build offline installation media, create local mirrors, or avoid repeated downloads across multiple systems, you’ll want to preserve those packages instead of letting them disappear from cache after installation. This is especially useful for: Building offline installation repositories Preparing…
Python 3.9 brought several substantial improvements over earlier versions. While it’s now past EOL as of October 2025, understanding its features provides context for migration planning and why the Python ecosystem shifted toward 3.10+. That said, if you’re maintaining legacy 3.9 code, these features remain relevant to your codebase. Dictionary Merge and Update Operators The…
Each process on Linux has its own environment variable namespace. While normally isolated, there are scenarios where you might need to modify a running process’s environment—usually for debugging, testing, or dynamic configuration changes. The standard approach uses GDB’s ability to call functions within a running process. This works by attaching GDB to the target process…
Google shut down Feedburner’s management interface, leaving it in indefinite maintenance mode. While RSS remains a critical format for feed distribution across platforms like WordPress and other CMS software, you need an alternative service for feed management and subscriber tracking. follow.it is a solid Feedburner replacement that handles RSS feeds, subscriptions, and analytics. This guide…
Perl one-liners are powerful for text processing, but by default the -p and -n options process input line by line. When you need to match patterns across multiple lines, you’ll hit limitations because \s doesn’t match newlines by default, and the record separator is set to \n. The solution is the -0777 flag, which changes…
The Dynamics 365 development tooling landscape has shifted significantly since the early VS 2017 days. While Jason Lattimer’s original D365DeveloperExtensions extension is no longer actively maintained, modern alternatives have emerged that handle web resource deployment more reliably. This guide covers current approaches and best practices for streamlining web resource workflows in Visual Studio. Modern Alternatives…
Type conversion is a constant necessity when handling user input, database results, and API responses in PHP. While PHP’s loose typing offers flexibility, explicit conversion remains essential for security, performance, and code clarity. Integer to String Conversion Several methods convert integers to strings: Casting is the most direct approach: $myInt = 42; $str = (string)…