#Programming (Програмування)
164 posts in category «Programming (Програмування)»
Notes on programming in Ukrainian: coding languages, algorithms, the latest technologies and other useful information for developers.
[Codecov] What is the difference between patch and project coverage?
Codecov is a service for analyzing code coverage by tests, which integrates with CI/CD and shows which part of the code is actual…
Why does PostgreSQL skip IDs when saving new records? (Heroku)
Checking the last ID in the database, and it is unexpectedly larger than the actual number of records. Why does this happen?In He…
Pessimistic Lock in Rails: what it is and when to use it. What are the alternatives?
If you are working with Rails and need to avoid simultaneous changes to a single record by multiple processes, you should pay att…
Embedded programming: what it is and how to get started
Embedded programming — is the development of software for devices that have limited computing capabilities and perform specialize…
What is XOR and how does it work?
XOR (exclusive OR) is a simple yet useful logical operation used in programming, cryptography, and data processing. It works on t…
What is CFB (Cipher Feedback)?
CFB (short for Cipher Feedback) is one of the methods of data encryption that works on the principle of "chaining." Imagine you h…
What is debounce in JavaScript and why is it important?
If you have ever worked with events in JavaScript, such as scroll, resize, or keyup, you have probably noticed that they can be t…
What is Memoization (examples in Ruby and Ruby on Rails)?
Memoization — is an optimization technique that involves caching the results of function executions to avoid redundant computatio…
What is a Promise in JavaScript and how to quickly understand its essence?
Imagine that you ordered coffee at a café. The barista takes the order, issues a receipt, and says, “Please wait a moment.” You d…
Fix the error [DEPRECATION] #adapters is deprecated. Use #profiles instead. (Codecov / docile)
Recently encountered an error in Codecov, which was actually a false alert. It only appeared on the Codecov side and caused a CI …
