Add adds the non-negative value x to the set.

!+Display

Eval returns the value of this Expr in the environment env.

!- !+comparison Equal reports whether x and y are deeply equal. !-comparison Map keys are always compared with ==, not deeply. (This matters for keys

Check reports errors in this Expr and adds its Vars to the set.

ImageFile reads an image from infile and writes a thumbnail-size version of it in the same directory. It returns the generated file name, e.g. "foo.th

Work runs the simulation 'runs' times.

!-lexer The read function is a decoder for a small subset of well-formed S-expressions. For brevity of our example, it takes many dubious shortcuts.

!-write !+close Close flushes the compressed data and closes the stream. It does not close the underlying io.Writer.

* //!+conc m := memo.New(httpGetBody) //!-conc */

IsPalindrome reports whether s reads the same forward and backward. (Our first attempt.)

IsPalindrome reports whether s reads the same forward and backward. Letter case is ignored, as are non-letters.

---- parser ---- Parse parses the input string as an arithmetic expression. expr = num a literal number, e.g., 3.14159 | id

* //!+seq m := memo.New(httpGetBody) //!-seq */

!+rev reverse reverses a slice of ints in place.

Any formats any value as a string.

Extract makes an HTTP GET request to the specified URL, parses the response as HTML, and returns the links in the HTML document.

SearchIssues queries the GitHub issue tracker.

!-intset !+string String returns the set as a string of the form "{1 2 3}".

sin(30°), cos(30°)

describe returns a string describing the current token, for use in errors.

!-main !+printTracks

!+

!-decl

!+

NewWriter returns a writer for bzip2-compressed streams.

work blocks the calling goroutine for a period of time that is normally distributed around d with a standard deviation of stddev.

Has reports whether the set contains the non-negative value x.

!+print Print prints the method set of the value x.

!-

!- !+write

!-Display formatAtom formats a value without inspecting its internal structure. It is a copy of the the function in gopl.io/ch11/format.

!-

!-Unpack !+populate

!-

!-

-- Alternative implementations --

CToF converts a Celsius temperature to Fahrenheit.

!-celsiusFlag !+CelsiusFlag CelsiusFlag defines a Celsius flag with the specified name, default value, and usage, and returns the address of the flag

!-write !+close Close flushes the compressed data and closes the stream. It does not close the underlying io.Writer.

FToC converts a Fahrenheit temperature to Celsius.

Image returns a thumbnail-size version of src.

ImageFile2 reads an image from infile and writes a thumbnail-size version of it to outfile.

ImageStream reads an image from r and writes a thumbnail-size version of it to w.

!+Marshal Marshal encodes a Go value in S-expression form.

PopCount returns the population count (number of set bits) of x.

Sort sorts values in place.

UnionWith sets s to the union of s and t.

!+Unmarshal Unmarshal parses S-expression data and populates the variable whose address is in the non-nil pointer out.

!+Unpack Unpack populates the fields of the struct pointed to by ptr from the HTTP request parameters in req.

!+ WaitForServer attempts to contact the server of a URL. It tries for one minute using exponential back-off. It reports an error if all attempts fail

!- !+write

!+append

appendValues appends the elements of t to values in order and returns the resulting slice.