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Programming-Idioms

  • Java
  • Perl

Idiom #138 Create temp file

Create a new temporary file on the filesystem.

use Path::Tiny qw(tempfile);
my $path = tempfile;

Returns a Path::Tiny object. To return the path as a string, call tempfile->stringify.
import File::Temp qw(tempfile);
my $fh = tempfile();
# or
my ($fh, $filename) = tempfile();

Core module File::Temp provides many different options from creating temporary files. This is the simplest. $fh is a file handle.
$filename is a path and file name.
import java.io.File;
File tempFile = File.createTempFile("prefix-", "-suffix");
tempFile.deleteOnExit();

This will create a File with a name like "prefix-6340763779352094442-suffix"
#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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programming-idioms.org 
my $path = tempfile;
my $fh = tempfile();
# or
my ($fh, $filename) = tempfile();



File tempFile = File.createTempFile("prefix-", "-suffix");
tempFile.deleteOnExit();
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 = io.tmpfile()
$f = tmpfile();
var
  H: THandle;
begin
  H := FileCreate(GetTempFileName);
end.

file = tempfile.TemporaryFile()
file = Tempfile.new('foo') 
let temp_dir = TempDir::new("prefix")?;
let temp_file = File::open(temp_dir.path().join("file_name"))?;