termination

How do I check if a program terminates?

由 本秂侑毒 提交于 2019-12-11 01:17:23
问题 Is there a general rule that can be used to determine this? E.g: int i = 10; while (i > 1 ) { if (i%2 == 0) i = i/2; else i = 3*i - 1; } 回答1: This is the halting problem. There does not exist an algorithm capable of doing what you ask. In particular, if there was such an algorithm, then the collatz conjecture, related to the function in your question, would be trivial (or at least a lot easier). 回答2: You may be referring to the stopping problem. In short, there is no general way to determine

What's the difference when using numeric literal in termination expression of a for statement?

由 扶醉桌前 提交于 2019-12-10 23:34:44
问题 Why does this piece of code: String value = JOptionPane.showInputDialog("Enter x"); //Input = 100 int x = Integer.parseInt(value); double result = 1; for (int i = 1; i <= x; i++) //used variable "x" here { result += (x * 1.0) / fact(i); x *= x; } public static int fact(int n) { int fact = 1; for (int i = 1; i <= n; i++) { fact *= i; } return fact; } work differently from this one? String value = JOptionPane.showInputDialog("Enter x"); //Input = 100 int x = Integer.parseInt(value); double

Termination of structural induction

由 邮差的信 提交于 2019-12-10 13:37:11
问题 I can't get Agda's termination checker to accept functions defined using structural induction. I created the following as the, I think, simplest example exhibiting this problem. The following definition of size is rejected, even though it always recurses on strictly smaller components. module Tree where open import Data.Nat open import Data.List data Tree : Set where leaf : Tree branch : (ts : List Tree) → Tree size : Tree → ℕ size leaf = 1 size (branch ts) = suc (sum (map size ts)) Is there

Why shouldn't I use Process.GetCurrentProcess().Kill() to exit my WinForm application?

由 你。 提交于 2019-12-09 07:46:07
问题 Right now, when the user want to exit my application, I do the few things I have to (ie disconnecting from the server, saving the user data...) and then I do the following : Exit all my mainloops using booleans abort the threads still running (typically, my server polling thread) kindly call Application.Exit(); This takes a few seconds to exit, and serves no real purpose (everything is already saved on the server, so I don't really care what happens there) If I use this instead, I got instant

EC2 volume: how do I set it so that it WILL delete on termination?

由 倾然丶 夕夏残阳落幕 提交于 2019-12-08 15:51:42
问题 I have an EC2 instance that I'd like to take a snapshot of, to use as an AMI for future spot instances. Because of the way I created volume for this instance, it is currently set to not delete upon termination. I want it to delete on termination, so that I can use it for spot instances and not have residual volumes hanging around needing manual deletion. I've combed AWS manual, stack exchange, google, etc and I can only find references to a 'delete on termination' flag, but no explanation of

Is it possible to fit in a ternary operator as the termination in a for loop?

由 偶尔善良 提交于 2019-12-08 14:07:03
问题 So, I just want to know if its possible to slip in any code or a ternary operator inside the termination bit of a for loop. If it is possible, could you provide an example of a ternary operator in a for loop? Thanks! for (initialization; termination; increment) { statement(s) } 回答1: The termination clause in the for statement (if supplied - it's actually optional) can be any expression you want so long as it evaluates to a boolean . It must be an expression , not an arbitrary code block. 回答2:

Google Play Account Termination

由 ぃ、小莉子 提交于 2019-12-06 06:57:47
Today I recieved a notificiation e mail from Google: "This is a notification that your Google Play Publisher account has been terminated. REASON FOR TERMINATION: Prior violations of the Developer Program Policies and Developer Distribution Agreement by this or associated accounts as outlined in previous emails sent to the registered email address(es) of the Publisher account(s). Google Play Publisher suspensions are associated with developers, and may span multiple account registrations and related Google services. You can visit the Developer Policy Center to better understand how we enforce

What happens if there is no exit system call in an assembly program?

由 偶尔善良 提交于 2019-12-06 02:10:31
问题 In an assembly program, the .text is loaded at 0x08048000 . The .data and .bss section comes after that. What would happen if I didn't put an exit syscall in the .text section? Would it lead to the .data and .bss being interpreted as code causing "unpredictable" results? When will the program terminate - probably after every "instruction" is executed? I can easily write a program without the exit syscall but of testing if .data and .bss would get executed is something I still don't know

Termination-checking substitution via (monadic) join and fmap

由 杀马特。学长 韩版系。学妹 提交于 2019-12-05 21:30:59
I'm using sized types, and have a substitution function for typed terms which termination-checks if I give a definition directly, but not if I factor it via (monadic) join and fmap. {-# OPTIONS --sized-types #-} module Subst where open import Size To show the problem, it's enough to have unit and sums. I have data types of Trie and Term , and I use tries with a codomain of Term inside Term , as part of the elimination form for sums. data Type : Set where 𝟏 : Type _+_ : Type → Type → Type postulate Cxt : Set → Set -- Every value in the trie is typed in a context obtained by extending Γ. data

C++ TerminateProcess function

由 ▼魔方 西西 提交于 2019-12-05 16:56:42
问题 I've been searching examples for the Win32 API C++ function TerminateProcess() but couldn't find any. I'm not that familiar with the Win32 API in general and so I wanted to ask if someone here who is better in it than me could show me an example for, Retrieving a process handle by its PID required to terminate it and then call TerminateProcess with it. If you aren't familiar with C++ a C# equivalent would help too. 回答1: To answer the original question, in order to retrieve a process handle by
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