The 2nd Monitor

Q: How to implement flatten as an extension on an Array?

1:40 AM

0

This is the best I've been able to come up with: extension Array { func flatten<T>() -> T[] { let xs = (self as Any) as Array<Array<T>> return xs.reduce(T[](), +) } } It works, but I'm not sure if all those ugly casts are required. Is there a better way? For comparison, here is th...

array swift

nhgrif

2:09 AM

What does it mean to "flatten" an array?

Or actually... should this question just be closed as it's copy & pasted from StackOverflow?

1

Q: How to implement flatten as an extension on an Array?

This is the best I've been able to come up with: extension Array { func flatten<T>() -> T[] { let xs = (self as Any) as Array<Array<T>> return xs.reduce(T[](), +) } } It works, but I'm not sure if all those ugly casts are required. Is there a better way? For comparison, here is th...

arrays swift reduce

1

Q: Implementing flatten() as an extension on an Array

This is the best I've been able to come up with: extension Array { func flatten<T>() -> T[] { let xs = (self as Any) as Array<Array<T>> return xs.reduce(T[](), +) } } It works, but I'm not sure if all those ugly casts are required. Is there a better way? For comparison, here is th...

array swift

Mat's Mug

Hey guys, I think this one slipped through:

1

Q: Unity DI Composition Root vs XML

I'm having trouble figuring out the best approach with DI. After doing more research, Mark Seeman recommends using the Composition Root approach. In my example, I am using XML configuration to design my mappings which allows me to drop any new dll that implements an interface without having to pe...

c# design-patterns dependency-injection

I answered, but the answer and the question it's under feel more like a Programmers post.

I also voted to close

Q: Would like an explanation as to why this was declined

Two more tags bite the dust. Two left (I believe) to consider: readability and best-practice

Whew. Dodged a bullet there.

-2

Is Singleton appropriate for storing application scope data in WCF? Was just curious as to why the flag was declined for the no evidence reason since I myself was asking to move my own post and I didn't want to re-post because I didn't want to cross post. I don't really want any action anymore....

discussion migration

Q: Did I implement my string formatting code correctly?

2:27 AM

1

As a small exercise I have written some string formatting and printing functions in C++11. I would like a bit of code review, not so much on the merits of using this over something like std::stringstream or boost::format, but simply whether or not my implementation makes sense. I especially would...

c++ strings c++11 formatting

Mat's Mug

TTGTB

Goodnight!

3:19 AM

accepted answer but not upvoted

-_-

I have upvoted the question not too long ago, so the OP should now know to vote.

Although, he has done the same thing on Math SE...

Q: Need Tips For Improving JS-code

3:46 AM

0

I have two identical objects on the page. So get more of the same lines of code :( Can anything be easier (merge)? Thanx Sample: for(var i=0;i<ticks.length,i<ticks2.length;i++) { var tick = ticks[i]; var tick2 = ticks2[i]; var tickCenter = tick.offsetWidth / 2 var offset = (i - current...

javascript

> This also appears to be example code, which is off-topic on Code Review.

except when it's not :p

Well, I did say "appears," meaning I'm not confident about this particular case.

i meant except when it's not off-topic

just poking fun at our very unusual definition of "example code" :p

Ah. Yes, that is true. :P

codereview.stackexchange.com/questions/56070/… <- tempted to start marking these things as duplicates

(anything that can be answered with "extract the repeated code into a function and call it")

3:51 AM

Heck, any legitimate way to get some things off the unanswered list. It's still increasing, though that's best solved with more reviewing.

someone will answer it, i'm sure, but i feel like anwering stuff like that encourages asking stuff like that, and is basically rep-scumming

hmm maybe if i answer with a comment

Just be glad we're not a prime target of "try this" answers. :-) I pretty much "mentally downvote" all those lazy answers on SO.

lol I have given some of those, but sometimes it's all you can do given the question

e.g. Q: "I'm using mysql and joins are slow, what can I do?" A: Try a subquery, mysql's optimizer is garbage.

Even a short sentence would be nice, but eh, maybe I'm a little picky. But I tend to show less mercy on SO for other things.

the weird thing is if i go looking (googling) for answers i sometimes find very good SO Q and A

3:56 AM

0

Q: Generic Makefile

I decided to setup a generic makefile to compile SFML programs, as I'm going to be making a bunch of small apps over the next few weeks playing around with it. I'm still new to writing makefiles (still weaning off of using IDE's), but I'm pretty happy with how it turned out. ####################...

bash linux makefile

but when i just sit there and look at the front page, it's horrible

Ugh, always. I use a different page to look for potential non-answers to flag. It's better than piling up more close flags that will just sit there for months.

you know i've never used any review queues or anything like that to find potentially bad stuff there to clean up

never had to leave the front page to find it, and never really wanted to see it in the first place ;)

It is indeed a drop in the bucket, but it's an okay time-killer. Sometimes there's even spam in there.

yeah i've found astroturfing a few times

never any straight up spam though (replica watches, viagra, etc)

man i'm stuck on this thing i was doing, think i'm gonna need to dump it and start over =/

was harder than it looked

the goal was to make all these asserts pass:

function assert(value, message) {
    console.log(value ? 'pass' : 'FAIL', message || '')
}

TEST_CASE('See if this works right', '[stuff]', function(){
    var x = 2, y = 4;
    assert(x == 2 && y == 4, 'initial values');

    SECTION('halving a good time', function(){
        x /= 2;
        y /= 2;
        assert(x == 1 && y == 2, 'halved values');
    });

    SECTION('double the fun', function(){
        x *= 2;
        y *= 2;
        assert(x == 4 && y == 8, 'doubled values');

        SECTION('up high', function(){

it's harder than it looks

basically each "leaf" section needs to run once, and the whole thing needs to be run from the start for each leaf

4:44 AM

How did I miss this question? It only had one other answer, which received a downvote from someone else.
http://codereview.stackexchange.com/questions/51837/optimize-a-parallelized-program-to-optimize-train-schedules
Any thoughts, @Yuushi?

4:57 AM

let me take a look

It's a zombie, too! I've just noticed.

heh, the point about having unorganised imports is even more poignant here

shoving it into vim and sorting the #includes shows that stdlib.h is included twice

Yep, it is. I missed that the first time (go figure).

This function signature is really confusing

inline double maxArray(double *arr, int size)

which is actually returning the position of the maximum element

He's mixing vectors and dynamically-allocated arrays. I don't even.

5:04 AM

doubly so because it's leaking

int *rand = new int[AnzahlSchattenzuege];

never freed

Crap, I didn't mention that.

uses rand, never calls srand

That, too. Shall I put them in, or could you come up with another answer?

@Yuushi Oh wait, it gets worse. He uses <random>, but still uses rand().

nah, you can add this stuff :)

yeah, there's a comment: // has to be replaced to c++11 random

Okay. :-) Perhaps someone else will be able to optimize this, perhaps after the code gets improved.

5:07 AM

This program can't possibly work

maxArray returns the maximum position

double max = maxArray(rand_val, size);
//cout << max << '\n';
if (max < best_max)
{
  best_max = max;
  memcpy(rand_best, rand, sizeof(int)*AnzahlSchattenzuege);
}

but then is used as the maximum value

missing <cstring> (for memcpy)

read_input isn't defined anywhere, only declared

Done

(although maybe they just didn't paste it in)

I could still mention that this whole thing is broken, but maybe all these points will communicate that. :-)

yeah

it's sloppily written

It may even get closed, but we'll see. I have to leave soon, so I can't test it further right now.

chillworld

5:23 AM

morning @all

g'day

Morning!

Malachi

6:26 AM

Blue cheese monster is back up in Blue Cheese room

and I am going to bed finally.......

Q: Refactor repeated statements and lengthy conditional statements

0

case 1 self.read_codec_info(fname) repeat 2 times, how to make it better ? codec_infos = [fname, resp] if len(self.read_codec_info(fname)) > 0: codec_infos += self.read_codec_info(fname) case 2 There are many variables and strings seems repeated many times. qpercent, quant, ...

python