NumPy Cheat Sheet

NumPy cheat sheet with arrays and practical Python examples

Python numerical computing reference NumPy Cheat Sheet Quickly find NumPy syntax for creating arrays, indexing and slicing, reshaping data, broadcasting values, performing calculations, generating random numbers, and working with linear algebra. View Quick Reference Browse All Sections Copy-ready Python Practical array examples Beginner to advanced Printable reference array_example.py import numpy as np sales = np.array([ … Read more

Pandas Cheat Sheet: DataFrames, Functions & Examples

Pandas Cheat Sheet showing DataFrame tables, code, filtering, merging, and data analysis charts

Python Data Analysis Reference Pandas Cheat Sheet Quickly find practical Pandas syntax for DataFrames, data cleaning, filtering, grouping, merging, reshaping, importing, and exporting data. View Quick Reference Browse All Sections Copy-ready Python Practical DataFrame examples Beginner to advanced Printable reference sales_analysis.py import pandas as pd df = pd.read_csv(“sales.csv”) summary = ( df.dropna(subset=[“Sales”]) .groupby(“Region”)[“Sales”] .sum() .sort_values(ascending=False) … Read more

Power BI DAX Cheat Sheet with Functions, Formulas & Examples

Power BI Formula Reference Power BI DAX Cheat Sheet Build better Power BI calculations with practical DAX functions, measures, context rules, time-intelligence patterns, and copy-ready formulas. Quickly find the syntax and example you need. View Quick Reference ↓ Browse DAX Topics → Practical measures Copy-ready formulas Context explained Printable reference DAX Measure Power BI Total … Read more

Excel Power Query Cheat Sheet: Transform, Clean & Combine Data

Excel Power Query Cheat Sheet

Excel Data Transformation Reference Excel Power Query Cheat Sheet Import, clean, transform, combine, and refresh data in Excel with Power Query. Use this practical reference for common transformations, query workflows, joins, M functions, and data-cleaning tasks. View Quick Reference Browse Power Query Beginner Friendly Data Cleaning Practical M Examples Printable Reference Power Query Editor Queries … Read more

Excel Formulas Cheat Sheet

Excel formulas cheat sheet with XLOOKUP, SUMIFS, IF and other formula examples

Excel Formula Reference Excel Formulas Cheat Sheet: 100+ Formulas & Examples Master the most useful Excel formulas with clear syntax, practical examples, and quick explanations. From basic calculations and IF statements to XLOOKUP, SUMIFS, text functions, dates, and dynamic arrays. View Quick Reference Browse Formulas Beginner Friendly Practical Examples Copyable Formulas Printable Reference fx =XLOOKUP(A2, … Read more

Excel Shortcuts Cheat Sheet: Windows & Mac

Excel keyboard shortcuts banner with spreadsheet tools and highlighted keys

Microsoft Excel Keyboard Reference Excel Shortcuts Cheat Sheet: Windows & Mac Quickly find Excel keyboard shortcuts for navigation, editing, formatting, formulas, tables, charts, PivotTables, and everyday workbook tasks. Compare Windows and Mac commands side by side. Search the cheat sheet Browse all shortcuts 26 focused sections Windows and Mac comparisons Searchable shortcut reference Ctrl C … Read more

CSS Flexbox Cheat Sheet: Properties & Examples

CSS Flexbox cheat sheet showing flexible items, alignment, wrapping, gaps, and layout directions

CSS Layout Reference CSS Flexbox Cheat Sheet: Properties & Examples Quickly find Flexbox container and item properties, understand the main and cross axes, compare alignment values, and copy practical CSS for responsive one-dimensional layouts. Search the cheat sheet Browse all sections 18 focused sections Copyable CSS examples Interactive Flexbox playground Main axis 1 2 3 … Read more

HTML Cheat Sheet: Tags, Attributes & Examples

HTML cheat sheet showing tags, forms, tables, links, images, accessibility, and responsive page structure

Web Development Cheat Sheet HTML Cheat Sheet: Tags, Attributes & Examples Quickly find essential HTML elements, attributes, forms, tables, semantic structures, accessibility guidance, and copyable code examples based on the current HTML Living Standard. 20 structured sections Copyable examples Interactive HTML preview Accessibility guidance Search the cheat sheet Browse all sections <article> <h1> Build meaningful … Read more

Linux Commands Cheat Sheet: Essential Commands & Examples

Linux commands cheat sheet showing a terminal, files, networking, permissions, and system administration

Data & Development Cheat Sheet Linux Commands Cheat Sheet: Essential Commands & Examples A practical Linux command reference for navigating the terminal, managing files and permissions, finding text, monitoring processes, troubleshooting networks, installing packages, and administering everyday systems. Copyable commands Practical examples Distribution notes Safety warnings 20 structured sections Beginner to intermediate Ubuntu, Debian, Fedora, … Read more

Regex Cheat Sheet: Syntax, Examples & Common Patterns

Alt Text: Regex cheat sheet illustration with common regular expression symbols

Programming & Development Cheat Sheet Regex Cheat Sheet: Syntax, Examples & Common Patterns A practical regular expression reference covering character classes, anchors, quantifiers, groups, lookarounds, flags, common patterns, replacements, and important differences between regex engines. Copyable regex syntax Practical matching examples Interactive regex tester Flavor compatibility notes 16 structured sections Beginner to advanced JavaScript, Python, … Read more