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specialized-io

Description

Fast I/O procedures specialized for different types. Instead of using the Scheme procedure read, specialized procedures can be used, so:

Author

Jeronimo Pellegrini

Requirements

Example

Examples:

(use specialized-io)

(let ((v (read-flonum (current-input-port))))
  (write-flonum (fp* 2.5 v) (current-output-port)))

Note that you can use fp* with a value returned from read-flonum (it's guaranteed to be a flonum).

Documentation

[procedure] (read-fixnum PORT)
[procedure] (read-flonum PORT)
[procedure] (read-complex PORT)
[procedure] (read-one-char PORT)

These procedures read one object of a specific type from an input-port. There are no runtime checks in the Scheme way; the procedures will just call error if anything goes wront (EOF, lexical error etc).

[procedure] (write-fixnum VALUE PORT)
[procedure] (write-flonum VALUE PORT)
[procedure] (write-complex VALUE PORT)
[procedure] (write-one-char VALUE PORT)

These procedures write one object of a specific type to an output-port. There are no runtime checks in the Scheme way; the procedures will just call error if anything goes wront (EOF, lexical error etc).

[parameter] specialized-io-error

This variable should be bound to a procedure that will be called when parsing fails. By default it's bound to error.

More examples

Examples:

(use specialized-io)

(let ((n (read-fixnum port)))
  (do ((i 0 (fx+ 1 i)))
      ((fx= i n))
    (f64vector-set! vec i (read-flonum port))))

Changelog

License

 Copyright (c) 2010, Jeronimo C. Pellegrini
 All rights reserved.
 
 Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following
 conditions are met:
 
   Redistributions of source code must retain the above copyright notice, this list of conditions and the following
     disclaimer. 
   Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following
     disclaimer in the documentation and/or other materials provided with the distribution. 
   Neither the name of the author nor the names of its contributors may be used to endorse or promote
     products derived from this software without specific prior written permission. 
 
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