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Programming-Idioms

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  • Rust

Idiom #138 Create temp file

Create a new temporary file on the filesystem.

use tempdir::TempDir;
use std::fs::File;
let temp_dir = TempDir::new("prefix")?;
let temp_file = File::open(temp_dir.path().join("file_name"))?;

TempDir deletes the directory and its contents when it is dropped.
#include <stdlib.h>
const char tmpl[] = "XXXXXX.tmp";
int fd = mkstemp(tmpl);

Template must contain six X characters that will be modified by mkstemp
New implementation...
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let temp_dir = TempDir::new("prefix")?;
let temp_file = File::open(temp_dir.path().join("file_name"))?;
const char tmpl[] = "XXXXXX.tmp";
int fd = mkstemp(tmpl);
(File/createTempFile "prefix" "suffix" (new File "/tmp"))
(File/createTempFile "prefix" "suffix")
string file = Path.GetTempFileName();
auto f = File.tmpfile();
open (newunit=u,status="scratch")
tmpfile, err := os.CreateTemp("", "")
withTempFile $ \f -> do
  -- do something with f
const tempFile = tempy.file()
const resultOfCallback = tempy.file.task(tempFile => {
 // do something with tempFile
})
File tempFile = File.createTempFile("prefix-", "-suffix");
tempFile.deleteOnExit();
file = io.tmpfile()
$f = tmpfile();
var
  H: THandle;
begin
  H := FileCreate(GetTempFileName);
end.

my $path = tempfile;
my $fh = tempfile();
# or
my ($fh, $filename) = tempfile();



file = tempfile.TemporaryFile()
file = Tempfile.new('foo')