These procedures are provided by all implementations.
Loads a file of Scheme source code from name with the default
filename extension used in SLIB. For instance if the filename extension
used in SLIB is .scm then
(slib:load-source "foo") will
load from file foo.scm.
On implementations which support separtely loadable compiled modules, loads a file of compiled code from name with the implementation’s filename extension for compiled code appended.
Loads a file of Scheme source or compiled code from name with the appropriate suffixes appended. If both source and compiled code are present with the appropriate names then the implementation will load just one. It is up to the implementation to choose which one will be loaded.
If an implementation does not support compiled code then
slib:load will be identical to
eval returns the value of obj evaluated in the current top
level environment. Eval provides a more general evaluation
filename should be a string. If filename names an existing
file, the Scheme source code expressions and definitions are read from
the file and eval called with them sequentially. The
slib:eval-load procedure does not affect the values returned by
Outputs a warning message containing the arguments.
Outputs an error message containing the arguments, aborts evaluation of the current form and responds in a system dependent way to the error. Typical responses are to abort the program or to enter a read-eval-print loop.
Exits from the Scheme session returning status n to the system.
If n is omitted or
#t, a success status is returned to
the system (if possible). If n is
#f a failure is
returned to the system (if possible). If n is an integer, then
n is returned to the system (if possible). If the Scheme
session cannot exit, then an unspecified value is returned from
Web browsers have become so ubiquitous that programming languagues should support a uniform interface to them.
If a browser is running,
browse-url causes the browser to
display the page specified by string url and returns
If the browser is not running,
browse-url starts a browser
displaying the argument url. If the browser starts as a
#t immediately; if
the browser starts as a foreground job, then
#t when the browser exits; otherwise (if no browser) it returns