https://www.ziglang.in/learn/ A Zig tutorial and cookbook where every snippet is compiled and run against current Zig master on every build, and runs in your browser as WebAssembly. en https://www.ziglang.in/learn/how-to/simd-scan/ https://www.ziglang.in/learn/how-to/simd-scan/ The five-step pattern that turns a byte-at-a-time loop into a register-wide scan. How-To Rajesh Pillai Wed, 29 Jul 2026 19:46:30 GMT https://www.ziglang.in/learn/data-structures/bst/ https://www.ziglang.in/learn/data-structures/bst/ Two pointers instead of one buys ordered iteration and O(log n) lookup, on a condition the structure does nothing to enforce. Data Structures Rajesh Pillai Wed, 29 Jul 2026 10:06:14 GMT https://www.ziglang.in/learn/data-structures/generic-list/ https://www.ziglang.in/learn/data-structures/generic-list/ Zig has no generics syntax. A generic container is a function that takes a type and returns a type, evaluated at compile time. Data Structures Rajesh Pillai Wed, 29 Jul 2026 10:06:14 GMT https://www.ziglang.in/learn/data-structures/hash-map/ https://www.ziglang.in/learn/data-structures/hash-map/ Open addressing with linear probing, growth at 75%, and the tombstone that looks like a hack until you delete without one. Data Structures Rajesh Pillai Wed, 29 Jul 2026 10:06:14 GMT https://www.ziglang.in/learn/data-structures/linked-list/ https://www.ziglang.in/learn/data-structures/linked-list/ The smallest structure that needs an allocator, an optional pointer and a deinit that gets the order right. Data Structures Rajesh Pillai Wed, 29 Jul 2026 10:06:14 GMT https://www.ziglang.in/learn/data-structures/std-lists/ https://www.ziglang.in/learn/data-structures/std-lists/ std.SinglyLinkedList is not generic and does not hold your data. You embed its node in your struct and walk back out with @fieldParentPtr. Data Structures Rajesh Pillai Wed, 29 Jul 2026 10:06:14 GMT https://www.ziglang.in/learn/getting-started/coming-from-older-zig/ https://www.ziglang.in/learn/getting-started/coming-from-older-zig/ What changed between the last stable releases and the master this guide targets. Getting Started Rajesh Pillai Wed, 29 Jul 2026 10:06:14 GMT https://www.ziglang.in/learn/graphics/color-matrix/ https://www.ziglang.in/learn/graphics/color-matrix/ Grayscale, sepia and saturation are one 3x3 matrix, and a chain of them multiplies into a single matrix before the image is touched. Graphics Rajesh Pillai Wed, 29 Jul 2026 10:06:14 GMT https://www.ziglang.in/learn/graphics/convolution/ https://www.ziglang.in/learn/graphics/convolution/ Blur, sharpen and Sobel are one loop with different numbers in it. The two bugs are always the border and the buffer. Graphics Rajesh Pillai Wed, 29 Jul 2026 10:06:14 GMT https://www.ziglang.in/learn/graphics/histogram/ https://www.ziglang.in/learn/graphics/histogram/ Count what the image contains, and the lookup table that fixes it falls out of the counts. Auto-levels, equalization, and why you apply them to luma. Graphics Rajesh Pillai Wed, 29 Jul 2026 10:06:14 GMT https://www.ziglang.in/learn/graphics/median/ https://www.ziglang.in/learn/graphics/median/ A convolution cannot ignore a value. Sorting the neighbourhood gives one function that is a denoiser, an eroder and a dilator depending on the index. Graphics Rajesh Pillai Wed, 29 Jul 2026 10:06:14 GMT https://www.ziglang.in/learn/graphics/per-pixel/ https://www.ziglang.in/learn/graphics/per-pixel/ Brightness, contrast, threshold and invert are all one table lookup, and the add that does brightness is where Zig has an opinion. Graphics Rajesh Pillai Wed, 29 Jul 2026 10:06:14 GMT https://www.ziglang.in/learn/graphics/resample/ https://www.ziglang.in/learn/graphics/resample/ Nearest, bilinear and box filtering, the half-pixel bug that shifts your whole image, and why downscaling without a filter turns detail into a solid bar. Graphics Rajesh Pillai Wed, 29 Jul 2026 10:06:14 GMT https://www.ziglang.in/learn/how-to/bitsets/ https://www.ziglang.in/learn/how-to/bitsets/ StaticBitSet turns membership, intersection, and union into single instructions. How-To Rajesh Pillai Wed, 29 Jul 2026 10:06:14 GMT https://www.ziglang.in/learn/how-to/databases/postgres-wire/ https://www.ziglang.in/learn/how-to/databases/postgres-wire/ Speak Postgres directly, framing a startup handshake and a query by hand. How-To Rajesh Pillai Wed, 29 Jul 2026 10:06:14 GMT https://www.ziglang.in/learn/how-to/databases/redis-resp/ https://www.ziglang.in/learn/how-to/databases/redis-resp/ Speak Redis's RESP protocol over a socket, with a tiny server and client in one process. How-To Rajesh Pillai Wed, 29 Jul 2026 10:06:14 GMT https://www.ziglang.in/learn/how-to/databases/sqlite-basic/ https://www.ziglang.in/learn/how-to/databases/sqlite-basic/ Open a database, create a table, insert with a prepared statement, and query, over the C API. How-To Rajesh Pillai Wed, 29 Jul 2026 10:06:14 GMT https://www.ziglang.in/learn/how-to/json-config/ https://www.ziglang.in/learn/how-to/json-config/ Defaults for what's missing, validation for what's wrong, clean errors for the rest. How-To Rajesh Pillai Wed, 29 Jul 2026 10:06:14 GMT https://www.ziglang.in/learn/how-to/json-custom/ https://www.ziglang.in/learn/how-to/json-custom/ Give a struct a jsonStringify method to rename fields and add computed ones. How-To Rajesh Pillai Wed, 29 Jul 2026 10:06:14 GMT https://www.ziglang.in/learn/how-to/math-functions/ https://www.ziglang.in/learn/how-to/math-functions/ Constants, trig, powers, roots, rounding, and comparing floats safely. How-To Rajesh Pillai Wed, 29 Jul 2026 10:06:14 GMT https://www.ziglang.in/learn/how-to/memory-layout/ https://www.ziglang.in/learn/how-to/memory-layout/ Read the size, alignment, and field offsets a struct actually gets, and control them. How-To Rajesh Pillai Wed, 29 Jul 2026 10:06:14 GMT https://www.ziglang.in/learn/how-to/parallel-sum/ https://www.ziglang.in/learn/how-to/parallel-sum/ Divide a slice among threads with no locks and one join. How-To Rajesh Pillai Wed, 29 Jul 2026 10:06:14 GMT https://www.ziglang.in/learn/how-to/seeded-random/ https://www.ziglang.in/learn/how-to/seeded-random/ Seeded generators make random worlds, tests, and replays repeatable. How-To Rajesh Pillai Wed, 29 Jul 2026 10:06:14 GMT https://www.ziglang.in/learn/how-to/serialization-size/ https://www.ziglang.in/learn/how-to/serialization-size/ The same 100,000 records as JSON and as packed bytes, measured exactly. How-To Rajesh Pillai Wed, 29 Jul 2026 10:06:14 GMT https://www.ziglang.in/learn/how-to/simd-sum/ https://www.ziglang.in/learn/how-to/simd-sum/ Using @Vector to process four elements per operation, tail included. How-To Rajesh Pillai Wed, 29 Jul 2026 10:06:14 GMT https://www.ziglang.in/learn/how-to/todo-store/ https://www.ziglang.in/learn/how-to/todo-store/ Fixed-size records on disk, updated in place by id with positional reads and writes. How-To Rajesh Pillai Wed, 29 Jul 2026 10:06:14 GMT https://www.ziglang.in/learn/how-to/vector-algebra/ https://www.ziglang.in/learn/how-to/vector-algebra/ Dot, length, normalize, and cross on @Vector, written like math instead of loops. How-To Rajesh Pillai Wed, 29 Jul 2026 10:06:14 GMT https://www.ziglang.in/learn/how-to/work-index/ https://www.ziglang.in/learn/how-to/work-index/ Dynamic load balancing with fetchAdd instead of locks or chunking. How-To Rajesh Pillai Wed, 29 Jul 2026 10:06:14 GMT https://www.ziglang.in/learn/language-basics/anonymous-structs/ https://www.ziglang.in/learn/language-basics/anonymous-structs/ Inferred struct literals, and tuples. Language Rajesh Pillai Wed, 29 Jul 2026 10:06:14 GMT https://www.ziglang.in/learn/language-basics/arrays/ https://www.ziglang.in/learn/language-basics/arrays/ Fixed-length sequences whose length is part of the type. Language Rajesh Pillai Wed, 29 Jul 2026 10:06:14 GMT https://www.ziglang.in/learn/language-basics/many-item-pointers/ https://www.ziglang.in/learn/language-basics/many-item-pointers/ [*]T: a pointer to an unknown number of items. Language Rajesh Pillai Wed, 29 Jul 2026 10:06:14 GMT https://www.ziglang.in/learn/language-basics/vectors/ https://www.ziglang.in/learn/language-basics/vectors/ SIMD with ordinary operators. Language Rajesh Pillai Wed, 29 Jul 2026 10:06:14 GMT https://www.ziglang.in/learn/networking/binary-protocols/ https://www.ziglang.in/learn/networking/binary-protocols/ A struct is not a wire format. Write the fields, and say which end first. Networking Rajesh Pillai Wed, 29 Jul 2026 10:06:14 GMT https://www.ziglang.in/learn/networking/http-roundtrip/ https://www.ziglang.in/learn/networking/http-roundtrip/ A std.http.Server on a thread, a std.http.Client fetching from it, no dependencies. Networking Rajesh Pillai Wed, 29 Jul 2026 10:06:14 GMT https://www.ziglang.in/learn/networking/many-clients/ https://www.ziglang.in/learn/networking/many-clients/ One handler per connection through Io, so the same source runs either way. Networking Rajesh Pillai Wed, 29 Jul 2026 10:06:14 GMT https://www.ziglang.in/learn/networking/short-reads/ https://www.ziglang.in/learn/networking/short-reads/ A read returning 7 bytes tells you nothing about where a message ends. Networking Rajesh Pillai Wed, 29 Jul 2026 10:06:14 GMT https://www.ziglang.in/learn/networking/tcp-echo/ https://www.ziglang.in/learn/networking/tcp-echo/ Listen, connect, and echo through std.Io.net, all in one process. Networking Rajesh Pillai Wed, 29 Jul 2026 10:06:14 GMT https://www.ziglang.in/learn/networking/what-is-a-socket/ https://www.ziglang.in/learn/networking/what-is-a-socket/ An address, a mode, and a handle you read and write like a file. Networking Rajesh Pillai Wed, 29 Jul 2026 10:06:14 GMT https://www.ziglang.in/learn/orm/adapters/ https://www.ziglang.in/learn/orm/adapters/ One query renderer, several SQL dialects, resolved at compile time. An Ecto-Style ORM Rajesh Pillai Wed, 29 Jul 2026 10:06:14 GMT https://www.ziglang.in/learn/orm/insert-update/ https://www.ziglang.in/learn/orm/insert-update/ INSERT and UPDATE statements derived from the schema, with values as a typed array. An Ecto-Style ORM Rajesh Pillai Wed, 29 Jul 2026 10:06:14 GMT https://www.ziglang.in/learn/orm/migrations/ https://www.ziglang.in/learn/orm/migrations/ Schema history as an append-only list, and applying it as a pure plan. An Ecto-Style ORM Rajesh Pillai Wed, 29 Jul 2026 10:06:14 GMT https://www.ziglang.in/learn/orm/schema-to-sql/ https://www.ziglang.in/learn/orm/schema-to-sql/ The core move of a Zig library: take the caller's type, return a richer one. An Ecto-Style ORM Rajesh Pillai Wed, 29 Jul 2026 10:06:14 GMT https://www.ziglang.in/learn/orm/transactions/ https://www.ziglang.in/learn/orm/transactions/ COMMIT on success, ROLLBACK on every error path, enforced by four lines. An Ecto-Style ORM Rajesh Pillai Wed, 29 Jul 2026 10:06:14 GMT https://www.ziglang.in/learn/orm/what-is-ecto/ https://www.ziglang.in/learn/orm/what-is-ecto/ The Elixir design these chapters borrow from, explained for people who never wrote Elixir. An Ecto-Style ORM Rajesh Pillai Wed, 29 Jul 2026 10:06:14 GMT https://www.ziglang.in/learn/standard-library/cancellation/ https://www.ziglang.in/learn/standard-library/cancellation/ Stopping a running task, and the cancellation points that make it possible. Standard Library Rajesh Pillai Wed, 29 Jul 2026 10:06:14 GMT https://www.ziglang.in/learn/standard-library/concurrency/ https://www.ziglang.in/learn/standard-library/concurrency/ async, Future, and Group, all through the Io interface. Standard Library Rajesh Pillai Wed, 29 Jul 2026 10:06:14 GMT https://www.ziglang.in/learn/standard-library/io-interface/ https://www.ziglang.in/learn/standard-library/io-interface/ Anything that can block takes an Io; the caller picks how. Standard Library Rajesh Pillai Wed, 29 Jul 2026 10:06:14 GMT https://www.ziglang.in/learn/standard-library/queues/ https://www.ziglang.in/learn/standard-library/queues/ Io.Queue as a bounded channel between tasks, with close and back pressure. Standard Library Rajesh Pillai Wed, 29 Jul 2026 10:06:14 GMT https://www.ziglang.in/learn/standard-library/threads/ https://www.ziglang.in/learn/standard-library/threads/ Real OS threads, and why this page cannot run in your browser. Standard Library Rajesh Pillai Wed, 29 Jul 2026 10:06:14 GMT https://www.ziglang.in/learn/working-with-c/c-primitive-types/ https://www.ziglang.in/learn/working-with-c/c-primitive-types/ Types whose width follows the target's C ABI. Working with C Rajesh Pillai Wed, 29 Jul 2026 10:06:14 GMT