prin1-to-string object → string

princ-to-string object → string

object — an object.

array — a generalized boolean.

base — a radix.

case — a symbol of type (member :upcase :downcase :capitalize).

circle — a generalized boolean.

escape — a generalized boolean.

gensym — a generalized boolean.

length — a non-negative integer, or nil.

level — a non-negative integer, or nil.

lines — a non-negative integer, or nil.

miser-width — a non-negative integer, or nil.

pprint-dispatch — a pprint dispatch table.

pretty — a generalized boolean.

radix — a generalized boolean.

readably — a generalized boolean.

right-margin — a non-negative integer, or nil.

string — a string.

write-to-string, prin1-to-string, and princ-to-string are used to create a string consisting of the printed representation of object. Object is effectively printed as if by write, prin1, or princ, respectively, and the characters that would be output are made into a string.

write-to-string is the general output function. It has the ability to specify all the parameters applicable to the printing of object.

prin1-to-string acts like write-to-string with :escape t, that is, escape characters are written where appropriate.

princ-to-string acts like write-to-string with :escape nil :readably nil. Thus no escape characters are written.

All other keywords that would be specified to write-to-string are default values when prin1-to-string or princ-to-string is invoked.

The meanings and defaults for the keyword arguments to write-to-string are the same as those for write.

(prin1-to-string "abc") → "\"abc\"" 
(princ-to-string "abc") → "abc"

*print-escape*, *print-radix*, *print-base*, *print-circle*, *print-pretty*, *print-level*, *print-length*, *print-case*, *print-gensym*, *print-array*, *read-default-float-format*.

write

 (write-to-string object {key argument}*) 
≡ (with-output-to-string (#1=#:string-stream) 
     (write object :stream #1# {key argument}*)) 

 (princ-to-string object) 
≡ (with-output-to-string (string-stream) 
     (princ object string-stream)) 

 (prin1-to-string object) 
≡ (with-output-to-string (string-stream) 
     (prin1 object string-stream))