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Programming-Idioms

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  • C++

Idiom #50 Make an infinite loop

Write a loop that has no end clause.

Ouroboros eating its own tail 
while (true) {
	// Do something
}

You may remove the curly braces if the block is only 1 instruction.

The compiler might warn you that the loop expression is never false.

Warning: infinite loop without side-effects is undefined behaviour.
for (;;) {
	/// Do something
}

You may remove the curly braces if the block is only 1 instruction.

Warning: infinite loop without side-effects is undefined behaviour.
loop
   null;
end loop;

null; means "do nothing"
New implementation...
< > ⌨
programming-idioms.org 
while (true) {
	// Do something
}
for (;;) {
	/// Do something
}
loop
   null;
end loop;
while(1){
	// Do something
}
loop:
	goto loop;

forever {
	// Do something
}
for(;;){
	// Do something
}
(loop []
  ;; do something
  (recur))
IDENTIFICATION DIVISION.
PROGRAM-ID. no end loop.
PROCEDURE DIVISION.
PERFORM UNTIL 1 < 0
   DISPLAY "Something"
END-PERFORM
STOP RUN.
while (true)
{
    // Do something
}
while (true) { }
for (;;) {}
while (true) {
  // do something
}
for (;;) {

}
defmodule Looping do
	def infinite do
		# Write code here	
		infinite
	end
end
loop() ->
	do:something(),
	loop().
do
end do
for {
	// Do something
}
while (true) { }
forever $ pure ()
let x = x in x
forever (getLine >>= putStrLn)

while (true) {
	// to infinity
}
for(;;) {
	console.log('Oops')
}
do {} while (true);
for (;;);
while (true);
for(;;){
	// Do something
}
while(true) {
	// Do something	
}
while (true) { }
(loop)
(defun infinite-loop (x)
  (apply x (infinite-loop x)))
(do () (nil)
  (write-line "Control-C to quit this infinite loop")
  (sleep 1))
while true do 
	-- Do something
end
::loop::
goto loop
repeat
until false
for (;;);
while (true) {
    // do something
}
While True do { nothing };
repeat until false;
say "" while True;
while (1) {
   do_stuff();
}
?- repeat, false.

% repeat/0 is built-in, but could be defined like this:
repeat.
repeat :- repeat.
loop :- loop.

?- loop.
repeat, write("hello\n").
while 1: ...
while True:
    pass
loop do
  # endless joy
end
loop {
	// Do something
}
while(true){
  println(3)
}
(let forever ()
  (forever))
[] repeat.
Do
    ' Do something
Loop