Category: Developer Workflow
-
How to rename a column in R: Base R and dplyr
Learn how to rename a column in R with names(), colnames(), and dplyr::rename(). See examples to rename columns in R selectively, replace full name lists, and avoid position or order errors.
-
How to Generate a Random Number in C++
Learn how to generate a random number in C++ with std::mt19937. Choose inclusive integer bounds, draw floating-point values, use fixed seeds for repeatable tests, or seed with random_device.
-
C modulus: How the % operator returns remainders
C modulus explains what the % operator returns, which integer types it accepts, how quotient and remainder relate, and how to test divisibility, parity, wrapping, and negative values.
-
How to print a new line in Python: 3 simple ways
Learn how to print a new line in Python: print() adds a newline automatically, \n embeds one in a string, and end controls what follows. See the next line in Python with runnable examples.
-
How to print in C with printf
Learn how to print in C with printf using a complete, compilable program. Print text, strings, characters, integers, and floating-point values, then handle newlines and catch format warnings.
-
-
C enum: declarations, values, variables, and a switch example
C enum declarations create named integer constants. Learn implicit and explicit values, typedef variables, duplicate values, and a practical switch example with precise type behavior.
-
C++ stringstream for Formatting and Parsing
C++ stringstream lets you format values into a string with >. Learn str(), stream state checks, leftover input, and how to clear and reuse the stream safely.
-
Git remove files from commit: fix the latest unpushed commit
Git undo commit before push: follow Git remove files from commit steps to unstage with restore –staged or rm –cached, then amend and verify before you push.
-
How to Change Git Remote URLs with git remote set-url
Learn how to change Git remote URLs with git remote set-url. Change Git remote origin or another named remote. Switch HTTPS to SSH, set Git remote URL values, and verify fetch and push endpoints.