Programming
Questions about C#, Python, Java, algorithms, and code architecture.
Learn to use SUMIFS in Excel Office 365 to sum values like dividends by multiple criteria such as year and company. Step-by-step examples, syntax, SUMIF vs SUMIFS, troubleshooting, and advanced tips for dynamic formulas.
Learn how to find when lines were deleted in Git history using git blame alternatives like git log -S and reverse git blame techniques.
Fix Mockito void method exception errors with doThrow(). Learn correct syntax for mocking void methods to throw exceptions, JUnit examples, verification, ArgumentCaptor, spies, and best practices for unit tests.
Explaining why Java lacks a SortedList interface in its Collections Framework despite having SortedSet and SortedMap. Learn about design rationale and alternatives for maintaining sorted order in Java lists.
Discover the reliable Excel formula to detect cells with dates entered without a leading apostrophe. Flags direct MM/DD/YYYY entries as errors for ERP validation, while allowing text dates, numbers like 82, and short formats. Uses CELL format for precise detection.
Learn how to properly format code examples in Javadoc comments to preserve line breaks and readability. Discover best practices for multi-line code snippets in Java documentation.
Learn how to download Java JDK on Linux using wget by bypassing Oracle's license page. Step-by-step methods with cookie headers and installation guide.
Learn how to check Python version programmatically using sys and platform modules. Discover methods to print, compare, and use version info in your scripts.
No pure F# Async equivalent to StartAsTask for custom CancellationToken in child computations within fsharp core workflows. Standard workaround uses Task interop with AwaitTask for selective cancellation without ambient propagation.
Implement stay logged in with session cookies and DB in Java servlets. Fix null session in servlet filter after login forward using getSession(true), REQUEST dispatchers, and secure cookie session ID practices.
Learn how to resolve VSCode IntelliSense errors with Selenium's find_element(By.ID) method. Quick fixes for autocomplete issues and proper setup.
Understanding why Java generics wildcards cause compilation errors with Comparable bounds and how to implement Kotlin data classes with proper type constraints.
Learn to register Blazor.SubtleCrypto's ICryptoService in Program.cs and inject it via constructor into non-component classes in Blazor WebAssembly. Step-by-step guide for AES-GCM encryption/decryption with DI best practices.
Learn the correct way to create a deep copy of Python dictionaries including nested lists. Use copy.deepcopy() to avoid shared references.
Discover how to automatically update all pip packages installed in editable mode (-e) to the latest main branch with a bash script. Keep editability intact, no reinstalls needed. Step-by-step guide, customizations, and git+ alternatives for Python devs.
Learn how to seed JavaScript's Math.random() function for reproducible random numbers. Explore alternatives like seedrandom library and custom PRNG implementations.
Learn how to stop RenPy game_menu from auto-selecting Save, Load, or Settings on open. Disable autofocus in navigationGM or use ClearFocus on show for manual clicks only. Step-by-step fixes with code examples.
Learn if you can delete or reset Telegram API ID and API hash if compromised. Password changes don't invalidate them. Official revocation via support and steps to get new credentials securely.
Learn how to download large files (>1GB) in Python using Requests library with proper streaming techniques to avoid memory overload. Complete implementation examples and best practices.
Resolve VSCode intellisense issues with Selenium find_element() By parameters. Learn proper import statements, interpreter configuration, and best practices for Selenium development in VSCode.