book/

hello.go

Package omap implements an efficient key-ordered map.

Dup1 prints the text of each line that appears more than once in the standard input, preceded by its count.

Dup2 prints the count and text of lines that appear more than once in the input.

Dup3 prints the count and text of lines that appear more than once in the named input files.

Echo1 prints its command-line arguments.

Echo2 prints its command-line arguments.

Echo3 prints its command-line arguments.

Fetch prints the content found at each specified URL.

Fetchall fetches URLs in parallel and reports their times and sizes.

Helloworld is our first Go program.

Lissajous generates GIF animations of random Lissajous figures.

Server1 is a minimal "echo" server.

Server2 is a minimal "echo" and counter server.

Server3 is an "echo" server that displays request parameters.

The cross command prints the values of GOOS and GOARCH for this target.

The jpeg command reads a PNG image from the standard input and writes it as a JPEG image to the standard output.

Echo prints its command-line arguments.

Package storage is part of a hypothetical cloud storage server.

Package storage is part of a hypothetical cloud storage server.

Package word provides utilities for word games.

Package word provides utilities for word games.

Package display provides a means to display structured data.

Package format provides an Any function that can format any value.

Package methods provides a function to print the methods of any value.

Package params provides a reflection-based parser for URL parameters.

Search is a demo of the params.Unpack function.

Package sexpr provides a means for converting Go objects to and from S-expressions.

Package bzip provides a writer that uses bzip2 compression (bzip.org).

Package bzip provides a writer that uses bzip2 compression (bzip.org).

Bzipper reads input, bzip2-compresses it, and writes it out.

Package equal provides a deep equivalence relation for arbitrary values.

Package unsafeptr demonstrates basic use of unsafe.Pointer.

Boiling prints the boiling point of water.

Cf converts its numeric argument to Celsius and Fahrenheit.

Echo4 prints its command-line arguments.

Ftoc prints two Fahrenheit-to-Celsius conversions.

Package tempconv performs Celsius and Fahrenheit conversions.

Package tempconv performs Celsius and Fahrenheit temperature computations.

Basename1 reads file names from stdin and prints the base name of each one.

Basename2 reads file names from stdin and prints the base name of each one.

Comma prints its argument numbers with a comma at each power of 1000.

Netflag demonstrates an integer type used as a bit field.

Printints demonstrates the use of bytes.Buffer to format a string.

Surface computes an SVG rendering of a 3-D surface function.

Append illustrates the behavior of the built-in append function.

Autoescape demonstrates automatic HTML escaping in html/template.

Charcount computes counts of Unicode characters.

Dedup prints only one instance of each line; duplicates are removed.

Embed demonstrates basic struct embedding.

Package github provides a Go API for the GitHub issue tracker.

Graph shows how to use a map of maps to represent a directed graph.

Issues prints a table of GitHub issues matching the search terms.

Issueshtml prints an HTML table of issues matching the search terms.

Issuesreport prints a report of issues matching the search terms.

Movie prints Movies as JSON.

Nonempty is an example of an in-place slice algorithm.

Rev reverses a slice.

The sha256 command computes the SHA256 hash (an array) of a string.

Package treesort provides insertion sort using an unbalanced binary tree.

Defer1 demonstrates a deferred call being invoked during a panic.

Defer2 demonstrates a deferred call to runtime.Stack during a panic.

Fetch saves the contents of a URL into a local file.

Findlinks1 prints the links in an HTML document read from standard input.

Findlinks2 does an HTTP GET on each URL, parses the result as HTML, and prints the links within it.

Findlinks3 crawls the web, starting with the URLs on the command line.

Package links provides a link-extraction function.

Outline prints the outline of an HTML document tree.

Outline prints the outline of an HTML document tree.

The squares program demonstrates a function value with state.

The sum program demonstrates a variadic function.

Title1 prints the title of an HTML document specified by a URL.

Title2 prints the title of an HTML document specified by a URL.

Title3 prints the title of an HTML document specified by a URL.

The toposort program prints the nodes of a DAG in topological order.

The trace program uses defer to add entry/exit diagnostics to a function.

The wait program waits for an HTTP server to start responding.

Coloredpoint demonstrates struct embedding.

Package geometry defines simple types for plane geometry.

Package intset provides a set of integers based on a bit vector.

The urlvalues command demonstrates a map type with methods.

Bytecounter demonstrates an implementation of io.Writer that counts bytes.

Package eval provides an expression evaluator.

Http1 is a rudimentary e-commerce server.

Http2 is an e-commerce server with /list and /price endpoints.

Http3 is an e-commerce server that registers the /list and /price endpoints by calling (*http.ServeMux).Handle.

Http3a is an e-commerce server that registers the /list and /price endpoints by calling (*http.ServeMux).HandleFunc.

Http4 is an e-commerce server that registers the /list and /price endpoint by calling http.HandleFunc.

The sleep program sleeps for a specified period of time.

Sorting sorts a music playlist into a variety of orders.

The surface program plots the 3-D surface of a user-provided function.

Package tempconv performs Celsius and Fahrenheit temperature computations.

Tempflag prints the value of its -temp (temperature) flag.

Xmlselect prints the text of selected elements of an XML document.

Package cake provides a simulation of a concurrent cake shop with numerous parameters.

Chat is a server that lets clients chat with each other.

Clock1 is a TCP server that periodically writes the time.

Clock is a TCP server that periodically writes the time.

Countdown implements the countdown for a rocket launch.

Countdown implements the countdown for a rocket launch.

Countdown implements the countdown for a rocket launch.

Crawl1 crawls web links starting with the command-line arguments.

Crawl2 crawls web links starting with the command-line arguments.

Crawl3 crawls web links starting with the command-line arguments.

The du1 command computes the disk usage of the files in a directory.

The du2 command computes the disk usage of the files in a directory.

The du3 command computes the disk usage of the files in a directory.

The du4 command computes the disk usage of the files in a directory.

Netcat1 is a read-only TCP client.

Netcat is a simple read/write client for TCP servers.

Netcat is a simple read/write client for TCP servers.

Pipeline1 demonstrates an infinite 3-stage pipeline.

Pipeline2 demonstrates a finite 3-stage pipeline.

Pipeline3 demonstrates a finite 3-stage pipeline with range, close, and unidirectional channel types.

Reverb1 is a TCP server that simulates an echo.

Reverb2 is a TCP server that simulates an echo.

Spinner displays an animation while computing the 45th Fibonacci number.

The thumbnail package produces thumbnail-size images from larger images.

Package bank provides a concurrency-safe bank with one account.

Package bank provides a concurrency-safe bank with one account.

Package bank provides a concurrency-safe single-account bank.

Package memo provides a concurrency-unsafe memoization of a function of type Func.

Package memo provides a concurrency-safe memoization a function of type Func.

Package memo provides a concurrency-safe memoization a function of type Func.

Package memo provides a concurrency-safe memoization a function of a function.

Package memo provides a concurrency-safe non-blocking memoization of a function.

Package memotest provides common functions for testing various designs of the memo package.