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Programming-Idioms

  • C++
  • C#

Idiom #139 Create temp directory

Create a new temporary folder on filesystem, for writing.

using System.IO;
string newDir = Path.GetTempPath() + Guid.NewGuid();
Directory.CreateDirectory(newDir);
string mkTmpDir()
{
    import std.uuid, std.file, std.path;
    string d = buildPath(tempDir, randomUUID.toString);
    if (!d.exists)
    {
        mkdir(d);
        return d;
    }
    else return null;
}

string s;
while (!s.length)
  s = mkTmpDir;

The standard library doesn't provide a function for that.
mkTmpDir generates a folder in the temp dir that takes a UUID as name. The temp dir is created when a non empty path is returned.
New implementation...
< > ⌨
programming-idioms.org 
string newDir = Path.GetTempPath() + Guid.NewGuid();
Directory.CreateDirectory(newDir);
string mkTmpDir()
{
    import std.uuid, std.file, std.path;
    string d = buildPath(tempDir, randomUUID.toString);
    if (!d.exists)
    {
        mkdir(d);
        return d;
    }
    else return null;
}

string s;
while (!s.length)
  s = mkTmpDir;
dir, err := os.MkdirTemp("", "")
withTempDirectory $ \d -> do
  -- do something with d
const tempDir = await Deno.makeTempDir();
File folder = new File("/path/");
folder.deleteOnExit();
function createTempDir(): ?string
{
    $path = rtrim(sys_get_temp_dir(), DIRECTORY_SEPARATOR) . DIRECTORY_SEPARATOR . mt_rand() . microtime(true);
    if (mkdir($path)) {
        return $path;
    }
    return null;
}
var
  GUID: TGUID;
  Succes: Boolean;

begin
  CreateGUID(GUID);
  Succes := CreateDir(GetTempDir + GUIDToString(GUID));
end.
my $path = tempdir;
td = tempfile.TemporaryDirectory()
td = Dir.mktmpdir
let tmp = TempDir::new("prefix")?;