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Functions

Learn Functions as a connected topic across chapters, concepts, simulations, and interview reasoning.

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Overview

Learn Functions as a connected topic across chapters, concepts, simulations, and interview reasoning.

How this topic helps

Algorithms
Data Structures
System Design
Bloom Filter

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Series that contain articles from Functions. Select a path to filter the article list.

Articles

7 matched articles

Article 1Functions in Python: Parameters, Return Values, and ScopeTLDR: Python functions are first-class objects, not just reusable blocks. They support keyword arguments, safe defaults with None, variadic *args/**kwargs, closures, and LEGB scope resolution. These f22 minArticle 2Decorators Explained: From Functions to Frameworks📖 The Copy-Paste Crisis: When Timing Code Invades Twenty Functions Sofia is three months into her first Python backend role. The team runs a performance review and discovers the data-processing API i24 minArticle 3Count-Min Sketch Explained: Frequency Estimation at Streaming ScaleTLDR: Count-Min Sketch (CMS) is a fixed-size d × w counter matrix that estimates how often any element has appeared in a stream. Insert: hash the element with each of the d hash functions to get one c22 minArticle 4Bloom Filters Explained: Membership Testing with Zero False NegativesTLDR: A Bloom filter is a bit array of m bits + k independent hash functions that sets k bits on insert and checks those same k bits on lookup. If any checked bit is 0, the element is definitely not i19 minArticle 5Serverless Architecture Pattern: Event-Driven Scale with Operational GuardrailsTLDR: Serverless is strongest for spiky asynchronous workloads when cold-start, observability, and state boundaries are intentionally designed. TLDR: Serverless works best for spiky, event-driven wo13 minArticle 6What are Hash Tables? Basics ExplainedTLDR: A hash table gives you near-O(1) lookups, inserts, and deletes by using a hash function to map keys to array indices. The tradeoff: collisions (when two keys hash to the same slot) must be handl12 min

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