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Programming-Idioms

  • Dart
  • Pascal
  • Rust
  • Perl

Idiom #212 Check if folder exists

Set the boolean b to true if path exists on the filesystem and is a directory; false otherwise.

use 5.010;
my $b = -e -d $path;

http://p3rl.org/perl5100delta#Stacked-filetest-operators
import 'dart:io';
var b = await Directory(path).exists();
uses sysutils;
b := DirectoryExists(path);
use std::path::Path;
let b: bool = Path::new(path).is_dir();
with Ada.Directories;
use Ada.Directories;
B : constant Boolean :=
    Exists (Path) and then Kind (Path) = Directory;
New implementation...
< > ⌨
programming-idioms.org 
my $b = -e -d $path;
var b = await Directory(path).exists();
b := DirectoryExists(path);
let b: bool = Path::new(path).is_dir();
use Ada.Directories;
B : constant Boolean :=
    Exists (Path) and then Kind (Path) = Directory;
auto b = std::filesystem::is_directory(path);
bool b = Directory.Exists(path);
info, err := os.Stat(path)
b := !os.IsNotExist(err) && info.IsDir()
File f = new File(path);
boolean b = f.exists() && f.isDirectory();
$b = is_dir($path);
b = os.path.isdir(path)
b = Dir.exist?( path )