You can run OCaml scripts directly from the command line with a shebang, similar to bash or Python. This requires making the file executable and using the proper interpreter directive. Basic Script Setup Create a file with a .ml extension and add a shebang at the top: #!/usr/bin/env ocaml print_endline “Hello world!”;; Then make it…
Converting Word documents to PDF is a fundamental task in most workflows. Modern versions of Office have native PDF export built in, but understanding your options and potential gotchas will save you time. Native PDF Export (Modern Office) If you’re using Office 2010 or later, PDF export is built into the application—no add-ons required. Open…
Copying webpage content directly into a document often produces poor formatting, missing images, or broken layouts. Here are several practical approaches to get clean, readable output. Browser Print Dialog (Native) Most modern browsers have built-in print functionality that’s worth trying first: Open the page in your browser Press Ctrl+P (Linux/Windows) or Cmd+P (macOS) In the…
iTunes backups are stored in device-specific directories. The location depends on your operating system: macOS: ~/Library/Application Support/MobileSync/Backup/ Windows: %APPDATA%\Apple Computer\MobileSync\Backup\ On Windows, the easiest way to navigate there is to press Win + R, type %appdata% and hit Enter, then navigate to Apple Computer\MobileSync\Backup\. Understanding iTunes Backup Files iTunes stores backups as a collection of…
Y-axis labels in Gnuplot can end up positioned awkwardly depending on your terminal, font, and tick label width. The most straightforward solution is using the offset option in the set ylabel command. Basic Offset Syntax The offset takes three parameters: horizontal, vertical, and depth (for 3D plots): set ylabel “Y Label” offset <x_offset>,<y_offset>,<z_offset> Positive values…
Font sizes in Gnuplot plots often appear too small when scaling images down for papers or presentations. You can control font sizes at multiple levels: globally for the terminal, for axis labels and tick marks, for legends, and for individual text elements. Global Terminal Font Size Set a default font and size for your entire…
If you use both the Chrome RSS Subscription Extension and Feedly, you can integrate them so that clicking the RSS icon in your browser automatically opens your feed in Feedly instead of the browser’s default handler. Understanding the Integration When you subscribe to an RSS feed through the Chrome extension, it needs a target URL…
Modern Fedora systems keep multiple kernel versions available, but older kernels are tucked in a submenu rather than appearing as top-level GRUB2 entries. This requires a slightly different approach when setting them as your default boot option. Understanding the GRUB2 submenu structure When you run: grep menuentry /boot/grub2/grub.cfg | cut -d “‘” -f2 You’ll see…
Managing OCaml packages effectively depends on your workflow and environment. The current standard is OPAM (OCaml Package Manager), which handles dependency resolution, version switching, and sandboxed environments. OPAM: The Standard Choice OPAM is the de facto package manager for OCaml and is maintained by the OCaml community. Install it using your system package manager or…
To load and execute code from a source file in the OCaml interactive toplevel, use the #use directive: #use “file-name”;; This reads, compiles, and executes OCaml phrases from the specified file as if you’d typed them directly into the toplevel. Execution stops at the first error encountered. Common use cases Loading utility functions If you…
The common claim that cin is significantly slower than scanf in C++ is partially true, but only when comparing default configurations. The reality is more nuanced. Why cin Can Be Slower by Default By default, C++ streams maintain synchronization with C stdio streams (stdin, stdout, stderr). This synchronization requires additional overhead because the library must…
OCaml provides robust FFI (Foreign Function Interface) capabilities for calling C code. This is essential when you need to use existing C libraries or write performance-critical sections in C. Using the Unix Module The simplest approach for Unix/Linux system calls is the built-in Unix module, which wraps common POSIX functions without requiring manual FFI binding….
OCaml’s int type size depends on your platform’s architecture. On 64-bit systems, int is 63 bits; on 32-bit systems, it’s 31 bits. This catches many people off guard when they test bitwise operations. Here’s why: OCaml uses one bit as a tag to distinguish integers from pointers at runtime (the least significant bit). So on…
Transactional memory (TM) is a synchronization mechanism that simplifies concurrent programming by allowing multiple threads to execute code atomically without explicit lock management. If you’re getting into this area, here are the best resources and practical approaches to build solid understanding. Foundational Reading The classic reference is still Transactional Memory by James R. Larus and…
Consistency models define the guarantees that a distributed system makes about the order and visibility of data modifications across nodes. Understanding these models is essential when designing systems, choosing databases, or debugging data anomalies in production. Strong Consistency Models Strict Consistency is the ideal but rarely achievable model. It guarantees that reads always reflect the…
Chrome supports proxy configuration via command-line flags, which is useful for scripting, automation, or testing without touching the GUI settings. This works across all major Linux distributions. Basic proxy configuration Use the –proxy-server flag when launching Chrome: google-chrome –proxy-server=”socks://localhost:8080″ Proxy scheme formats The proxy specification follows this format: [<proxy-scheme>://]<proxy-host>[:<proxy-port>] Supported schemes: http — HTTP proxy…
The most reliable way to keep your iPhone contacts synchronized with Google is through CardDAV, Google’s contact synchronization protocol. This works on modern iOS versions and automatically syncs changes in both directions. Using Native iOS CardDAV Setup Navigate to Settings > Mail > Accounts > Add Account: Select Other at the bottom of the account…
If you’re running Question2Answer and want to replace the default search with Google Custom Search without modifying your theme, a plugin is the cleanest approach. Setup Requirements Before implementing Google Custom Search, you’ll need: A Google account Google Custom Search Engine (CSE) created at cse.google.com Your CSE ID (cx parameter) Question2Answer 1.8+ installed and functioning…
GNOME can automatically restore your session—reopening all applications and windows that were running when you last logged out. This differs from autostart scripts, which launch specific programs on every login regardless of what was running before. Automatic Session Restoration To enable automatic session restoration in GNOME: Open Settings → General (or search “Session” in Activities)…
If you need to restart GNOME while keeping your applications open, you have several options depending on your GNOME version and setup. Quick restart with Alt+F2 The fastest method is to use GNOME’s run dialog: Press Alt + F2 Type r and press Enter This restarts the GNOME shell while preserving your running applications and…