Unicon Language Reference Clinton L. Jeffery Shamim Mohamed ...

classname(r) : string
classname(r) produces the name of r’s class.
class name
close(f) : file | integer
close file
close(f) closes file, pipe, window, network or message connection, or database f and returns any
resources associated with it to the operating system. If f was a window, close(f) causes it to
disappear, but the window can still be written to and copied from until all open bindings are
closed. If f was a pipe or network connection, close() returns the integer exit status of the
connection, otherwise it returns the closed file.
cofail(CE) : any
transmit co-expression failure
cofail(ce) activates co-expression ce, transmitting failure instead of a result.
collect(i:0, i:0) : null
collect garbage
collect(i1,i2) calls the garbage collector to ensure that i2 bytes are free in region i1. i1 can be 0
(no region in particular) 1 (static region) 2 (string region) or 3 (block region).
condvar() : condition variable
condvar() creates a new condition variable.
create condition variable
constructor(s, ...) : procedure
record constructor
constructor(label, field, field, ...) creates a new record type named label with fields named by its
subsequent arguments, and returns a constructor procedure for this record type.
copy(any) : any
copy value
copy(x) produces a copy of x. For immutable types (numbers, strings, csets, procedures) this is a
no-op. For mutable types (lists, tables, sets, records, objects) a one-level deep copy of the object
is made.
cos(r) : real
cos(r) produces the cosine of r. The argument is given in radians.
cset(any) : cset?
cset(x) converts x to a cset, or fails if the conversion cannot be performed.
cosine
convert to cset
ctime(i) : string
format a time value into local time
ctime(i) converts an integer time given in seconds since the epoch, Jan 1, 1970 00:00:00 into a
string in the local timezone. See also keywords &clock and &dateline.
dbcolumns(D,s) : list
ODBC column information
dbcolumns(db, tablename) produces a list of record (catalog, schema, tablename, colname,
datatype, typename, colsize, buflen, decdigits, numprecradix, nullable, remarks) entries. Fields
datatype and typename are SQL-dependent and data source dependent, respectively. Field colsize
gives the maximum length in characters for SQL CHAR or SQL VARCHAR columns.. Field
decdigits gives the number of significant digits right of the decimal. Field numprecradix specifies
19