close
close(f)Input: f · Output: no output
What it is
Flushes and releases a file handle. f (file handle, from fopen/StreamFile) is the handle to release.
Overloads
One call shape — this function is not overloaded.
| Code | Input | Output | Description |
close(f) | f —not documented yet | no output | Flushes and releases a file handle. |
Examples
From the documentation, and run by the build -- the output and the figure below are what the engine actually produced. Simplest first.
n = fopen("notes.txt", "w")
write_line(n, "line one")
write_line(n, "line two")
close(n)
print(read_all_text("notes.txt"))
# line one
# line two
output
line one line two
from file-io
write("a", 1, "b")
print("")
f = fopen("scratch_write_demo.txt", "w")
write(f, "hello file")
close(f)
g = fopen("scratch_write_demo.txt", "r")
print(read_all(g))
close(g)
output
a 1 b hello file
from repl-diagnostics
f = fopen("log.txt", "r")
for i = 0 to 1
print(read_line(f))
end for
close(f)
g = fopen("log.txt", "r")
print(read_all(g))
close(g)
output
run started value = 42 run started value = 42
from file-io
ports = serial_ports() # e.g. ["COM3"], or [] with no hardware attached
conn = serial_open(ports[0], 9600, timeout_ms=500)
line = read_line(conn) # blocks up to 500ms; `none` if nothing arrived
if line != none
print("got: {line}")
else
print("no line arrived within the timeout")
end if
close(conn)
output
no line arrived within the timeout
from concurrency