The 2nd Monitor

RoboSanta

20:00

Tumbleweed candidate; zero score, no answers, no comments, and low views: Command line VBScript spam bot vbscript

pacmaninbw

Is this too harsh? codereview.stackexchange.com/questions/135181/…

Malachi

@forsvarir please read the Meta Post, it lays out how we go about running through that queue fairly well.

a lot of us have our 1k reviews badge for that queue so we leave it to you all so you can learn what Code Review is all about and so that you have a chance to jump on the new posts to give awesome reviews before we see them :)

syb0rg

@pacmaninbw Some formatting errors, see if I missed any in that fix edit

Hello @Neal

RoboSanta

Naruto answer; accepted non-selfie answer with 0 score: Generic LinkedList with add/exists/delete/dlear/iteration functionality c# algorithm data-structures linked-list

Mast

20:16

@Vogel612 You can do multi-player Factorio?

RoboSanta

Ripe zombie; open question with answers, at least one answer having score 0, no answer having score > 0: Nested values copies from one object to another javascript node.js

arda

@Mast up to 255 people

Joe Wallis

@Mast And you can do it over the internet if you can port forward

Mast

20:33

@arda Madness.

Captain Obvious

0

Q: Process bytes and check for start key

I am working with some wireless communication in Arduino. My data will be wirelessly received like so: 97 97 97 ... ... 979797 is the address of the transmitter. I have written the following code to check the address first before processing the data. My main concern is speed of computation. ...

arda

@Mast yeah

Mast

What would be the point of a 255-player Factorio game?

arda

@Mast to see what happens or youtube views

likely second

syb0rg

It's kinda fun rewriting the build system for LibSndFile: github.com/syb0rg/libsndfile/commit/…

If you have ever used Audacity, LibSndFile is in the back end of that application

Ethan Bierlein

20:41

monking

Mast

@syb0rg I remember writing my own filters for that in that funky language of theirs.

syb0rg

0

Q: Unable to Link Libraries to Target?

I have the following CMakeLists.txt, trying to build my software on Windows with MinGW-w64: # # Initial CMake and project setup # # Required CMake version (ExternalProject) CMAKE_MINIMUM_REQUIRED(VERSION 2.8 FATAL_ERROR) INCLUDE(ExternalProject) SET(PROJECT_NAME Khronos) PROJECT(${PROJECT_NAME}...

c windows build linker cmake

In case anyone here got awesome at CMake... @SirPython? ^^

SirPython

Heh, not quite. Still getting used to it and playing around with it (had to take a break recently, though)

Mast

@syb0rg I don't want to sound like an ass, but that's not a MCVE.

Have an upvote anyway

syb0rg

@Mast I know... I know

Is a CVE good enough?

SirPython

20:54

@syb0rg Why do you do this:

Duga

possible answer invalidation by Charon on question by Charon: codereview.stackexchange.com/posts/135142/revisions

SirPython

SET (GCC_COMMON_WARNING_FLAGS "-pedantic -Wall -Wextr...
SET (GCC_COMMON_WARNING_FLAGS "${GCC_COMMON_WARNING_FLAGS} -Wno-u....

syb0rg

:31119868 I thought I removed that... must have those changes still local on my Mac

SirPython

instead of doing that all in one statement.

syb0rg

@SirPython I should be, and I think I do in a more recent Unix specific edit

Anyways, TTQW

Mast

20:58

@syb0rg Added the full name of OPC to your question by the way, hope you don't mind.

If you scout around CR and can find more questions about OPC, you might want to add a tag for it.

Odd edit suggestioni...

Duga

[rubberduck-vba/Rubberduck‌] Hosch250 created tag v2.0.6-rc

syb0rg

@Mast Fine by me!

Malachi

how do I create a chat room and invite a user that only has 21 rep?

arda

@Malachi 1) chat.stackexchange.com/rooms/new

2) give them link, and give them explicit write access when they come in

Malachi

I think I might invite here

someone ping me when @ExtremeCSharper comes in

thanks

care to join me in The Second Monitor and help me to understand why you don't like my suggestion? I am open to learning more about C# than I already do. thank you — Malachi 29 secs ago

arda

21:11

(if you need help giving explicit write access let me know)

Hosch250

@Malachi I'm pretty sure he is right, that you should leave the using statement, and then return, to properly call Dispose() on the value.

Also, your guest is here.

Hi, @extremecsharper.

Update: Both I and he is wrong: stackoverflow.com/questions/11776945/…

> It's perfectly safe to call return inside your using block, since a using block is just a try/finally block.

Malachi

@extremecsharper it's not so much that it is faster, I haven't tested it.

like @Hosch250 and that SO answer said, the dispose is essentially inside of a finally block, it wouldn't make sense to return after the finally block, it would make more sense to return inside the block itself.

I also thought about moving the instantiation of the variable inside of the using statement as well, because there was no reason to declare it outside of the statement, it should be declared just outside of the foreach loop

Hosch250

@Malachi Wrong analogy.

Malachi

yeah probably

Hosch250

I'm not too sure how try/finally's work, but if you don't dispose correctly, you'll have a memory leak.

Malachi

21:25

the purpose of the using statement is to avoid the "if you don't dispose correctly"

the data isn't linked to the things being disposed of in that code

Hosch250

I mean, I'm not sure where the finally runs.

Malachi

after scope leaves the using block

Hosch250

Does it run before the return anyway, or after?

Malachi

I am pretty sure that the finally would run after the return

	private IEnumerable<ExpandoObject> GetOuGroupsUsersData(
		PrincipalContext pc)
	{
		var data = new List<ExpandoObject>();
		try {
			var gp = new GroupPrincipal(pc);
			var ps = new PrincipalSearcher(gp);
			var psr = ps.FindAll();
			foreach (var g in psr.GetGroupPrincipals())
			{
				try {
					var gpsr = g.GetMembers();
					data.AddRange(
						gpsr.GetUserPrincipals().Select(
							u => GenerateData(g, u))
							.Cast<ExpandoObject>());
				}
				finally{
					gpsr.Dispose();
				}
			}

that is what it would look like if you didn't use the using blocks

so of course you would put the return inside the try block before the final finally but after the foreach. the finally statements are just clean up

there is the possibility that a return can error, so I would assume that the return would fire before the finally block cleans up

Hosch250

Yeah, it does.

From what I can figure out, it leaves the scope, loads the value into a variable, then runs the finally.

Malachi

21:34

@Hosch250 are you saying that it returns then disposes?

Hosch250

Yeah.

Well, no.

It leaves the scope, calls the finally, then returns from the method.

class Bar
{
    public string Main()
    {
        using (var f = new System.IO.StreamWriter(""))
        {
            return "test";
        }
    }
}

IL_0000:  nop
IL_0001:  ldstr       ""
IL_0006:  newobj      System.IO.StreamWriter..ctor
IL_000B:  stloc.0     // f
IL_000C:  nop
IL_000D:  ldstr       "test"
IL_0012:  stloc.1
IL_0013:  leave.s     IL_0020
IL_0015:  ldloc.0     // f
IL_0016:  brfalse.s   IL_001F
IL_0018:  ldloc.0     // f
IL_0019:  callvirt    System.IDisposable.Dispose
IL_001E:  nop
IL_001F:  endfinally
IL_0020:  ldloc.1
IL_0021:  ret

jrh

Quick question, do you guys think Bit Endianness is still a big deal these days? PowerPC Macs are pretty old...

Hosch250

IL_0006:  newobj      System.IO.StreamWriter..ctor    // creates StreamWriter

IL_0013:  leave.s     IL_0020    // leaves scope

IL_0019:  callvirt    System.IDisposable.Dispose    // calls dispose
IL_001E:  nop
IL_001F:  endfinally    // finishes finally block

IL_0021:  ret    // returns from method

Malachi

would it be different if it were multi threaded? random question might not have any bearing

Hosch250

I'm pretty sure not.

Malachi

21:40

it still sets the return variable before it calls the Dispose though

> IL_0016: brfalse.s IL_001F

Hosch250

Of course, otherwise it would lose it.

Malachi

try to return from outside of the using

Hosch250

Can't return a boolean from a string.

It detects unreachable code and doesn't do anything.

Malachi

I mis-typed

sorry

Hosch250

IL_0000:  nop
IL_0001:  ldsfld      System.Boolean.FalseString
IL_0006:  ldstr       "False"
IL_000B:  call        System.String.op_Equality
IL_0010:  stloc.0
IL_0011:  ldloc.0
IL_0012:  brfalse.s   IL_0034
IL_0014:  nop
IL_0015:  ldstr       ""
IL_001A:  newobj      System.IO.StreamWriter..ctor
IL_001F:  stloc.1     // f
IL_0020:  nop
IL_0021:  ldstr       "test"
IL_0026:  stloc.2
IL_0027:  leave.s     IL_003C
IL_0029:  ldloc.1     // f
IL_002A:  brfalse.s   IL_0033
IL_002C:  ldloc.1     // f
IL_002D:  callvirt    System.IDisposable.Dispose

The actual leaving of the method is still the last thing to execute.

Once it leaves the method, it can't run any code from it. The finally will always run before the last brace (if you can say the last brace really runs...)

Quill

21:44

I asked @Nick_Craver why he sold his house and he said "String allocations in the walls" and I laughed but he didn't https://twitter.com/Nick_Craver/status/754047901949657088

Tweeted by drob on July 18, 2016 at 3:21 PM

Malachi

@Hosch250 agreed.

that isn't the same code with the return outside of the using block though, what is the C# code?

Hosch250

class Bar
{
    public string Main()
    {
        if (bool.FalseString == "False")
        {
            using (var f = new System.IO.StreamWriter(""))
            {
                return "test";
            }
        }

        return bool.FalseString;
    }
}

I had to use an if to make it not just compile away the final return.

Malachi

I gotta finish this email, but this was rather enlightening either way.

remind me to ask you how you get to that compiler code or whatever it is....I haven't ever messed with that, and I would like to

Hosch250

LinqPad.

I have the free version.

Malachi

me too. but you can see that in VS as well can't you?

Hosch250

21:55

Possibly, I don't know.

It's called "IL", anyway.

Just go to the IL tab in LinqPad.

jrh

I'd recommend ildasm if you don't have linqpad

it comes with visual studio

you can access it through the visual studio command prompt

I'll tell you where it is in a few... got to go

Captain Obvious

0

Q: Unit testing Spark transformation on DataFrame

Looking for suggestions on how to unit test a Spark transformation with ScalaTest. The test class generates a DataFrame from static data and passes it to a transformation, then makes assertion on the passing static data generated in the test class. (The transform creates a second column b defin...

scala apache-spark

0

Q: Python hangman game better ways to write a simple project

I've created a little hangman game. It's pretty simple, and not to exciting but I want to know if there's a way I could turn this little game into something more extravagant and more exciting. How can I take this delicate piece of crap machinery into something a little more fun and a bit more com...

python game hangman

0

Q: Best way to move function to models in nodejs? Fat model / skinny controller

My code works, but I understand it's best to have fat models and skinny controllers. However, I am using 3 different models and have unfortunately made my controllers fat. What is the best way to organize this code? I've been reading on code structure, but I'm a bit unsure of best practices. ...

beginner node.js mvc mongodb

Mast

@jrh In most situations? No. In networking and multi-platform? You never no.

Hosch250

Some people pick the craziest user names.

I'd rather be seeing "user239039" than some of these...

arda

@Hosch250 you mean the poster of this question chat.stackexchange.com/transcript/message/31121242#31121242?

Hosch250

22:08

Yeah, and the one below it.

Mast

Agreed.

arda

done forget unicode-abusing names

ƎpᴉʇʎXD, Pencil Land

140 1 19

16.04 battery 14.04 15.10 boot boot-partition charging

Hosch250

I can't stand arrogant people who claim they are "noobs". Maybe instead of advertising themselves as fools, they should work on the remedy.

Quill

@arda that user is a little dramatic though

he's been in a bit of chat drama lately

arda

oh boy did they drop here too?

Quill

22:09

I don't think so.

Hosch250

Quill is a mod, he knows.

Quill

I'm a man of the world (lots of SE rooms)

arda

that user is claiming that someone will come back and dox someone since like 3 days ago, in bridge at least 0ws.pw/62fs.png

Quill

@Hosch250 IMO it's better than people that write up their profile egotistically

Hosch250

@Quill Same principle--they are advertising themselves as fools.

Quill

22:11

heh

Hosch250

BTW, I was just working on trying to test a WinForms dialog like WPF, and it can't be done.

Mast

Yup. Both are a disgrace to the community.

Hosch250

:(

Mast

But hey, this is the internet.

Internet is odd.

Hosch250

Looking forward to 2.1 when I can work on what I please and do some fun things.

Mast

22:12

Many people on the internet.

Hosch250

@Mast I've noticed people are very similar on the internet to what they are in real life.

Maybe some things are masked a bit and others brought out, but that is usually because they are trying to hide something.

Mast

Yup.

Hosch250

The internet gives them a feeling of anonymity, where they can show their true colors.

Duga

22:25

possible answer invalidation by Tom Wenseleers on question by Tom Wenseleers: codereview.stackexchange.com/posts/134926/revisions

Mast

@Duga Rolled back.

Captain Obvious

1

Q: Clojure performance for solving Project Euler 72

This is a solution of Project Euler 72 in Java. public long solve() { int limit = 1000000; int[] phi = IntStream.range(0, limit + 1).toArray(); long result = 0; for (int i = 2; i <= limit; i++) { if (phi[i] == i) { for (int j = i; j <= limit; j += i) { phi[j] = phi[j] /...

java performance clojure

200_success

22:49

@Duga And the edit train finally pauses at Rev 53.

Hosch250

Wow.

Mast

Or 55, depends on how you count.

jrh

@Hosch250 found it

for me ILDASM is in C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\Bin

Hosch250

Cool.

jrh

I really thought it was in the visual studio directory

I strongly suggest that you make a shortcut to that

I always forget where it is (case in point)

it's a great tool, you can reflect an entire assembly, open up any compiled class in a text window, and get a good idea of how the .NET languages work

@Mast Can PowerPCs run .NET though?

is there another Big Endian architecture?

I agree with the principle though

Legato

23:21

You guys use the SE app?

Vogel612

yeap

jrh

nope

my fax machine can't seem to connect

Captain Obvious

23:43

0

Q: Make Simultaneous HTTP Requests That Resolve Into a Single Return

This week, in an ongoing job search, I was tasked with the following pre-screening question: Make two simultaneous http requests. Use the language and library of your choice. Make sure the results are combined and resolve into a single return. For this I chose JavaScript and jQuery, culmina...

javascript jquery asynchronous ajax

0

Q: Sort a binary file without loading it into memory or using a temporary file

I had a silly assignment: You are given a binary file FLOATS.DAT of unknown length, type float data has been written in it. Write a program which sorts the data in the file (the output is a sorted file FLOATS.DAT). You need to sort it without loading the file into memory, or by using a ...

c sorting

Mast

@jrh I don't know.

Transcript for