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Slack cheat sheet & developer notes

Slack cheat sheet and 3 curated developer notes — core concepts, patterns, and interview prep. Maintained by the DevRecall team.

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01 · Slack

Slack API & Webhooks

Slack API & Webhooks. Slack provides several integration points: Incoming Webhooks (push messages), Slash Commands, Events API (receive events), Web API (full programmatic control), and Socket Mode (no public URL needed)…

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02 · Slack

Building Slack Bots & Apps

Building Slack Bots & Apps. Bolt Framework (Official SDK). Bolt is Slack's official SDK for building apps in Node.js, Python, and Java. It handles OAuth, event routing, and middleware automatically.. import { App } from …

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03 · Slack

Workflow Automation & Best Practices

Slack Workflow Automation & Best Practices. Workflow Builder (No-Code). Workflow Builder: Automations → Workflow Builder — create workflows without code. Triggers: message shortcut, emoji reaction, scheduled time, webhoo…

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TypeScriptgeneral

Interview Questions

TypeScript Interview Questions. Comprehensive TypeScript interview questions covering type system, generics, utility types, and best practices:. Fundamentals. 1. What is TypeScript?. TypeScript is a…

Mar 28, 2026
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TypeScriptgeneral

Advanced Types (Generics & Utility Types)

TypeScript Advanced Types. Generics. // Generic function function identity<T>(arg: T): T { return arg; } const num = identity<number>(42); // Explicit const str = identity('hello'); // Inferred //…

Mar 3, 2026
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