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Thread Rules
1. This is not a "do my homework for me" thread. If you have specific questions, ask, but don't post an assignment or homework problem and expect an exact solution.
2. No recruiting for your cockamamie projects (you won't replace facebook with 3 dudes you found on the internet and $20)
3. If you can't articulate why a language is bad, don't start slinging shit about it. Just remember that nothing is worse than making CSS IE6 compatible.
4. Use [code] tags to format code blocks. |
On August 28 2015 17:57 Biolunar wrote:Show nested quote +An app can never be purely C/C++, because there is no I/O access through the NDK. That means any input and output has to be done in the Android framework in any case. How is that even possible? At the very least you must be able to call the syscalls directly if there is no C library wrapping them.
Ok. You're right of course. I meant that the NDK doesnt have access to the touch screeen (either for collecting user touches or for putting something on it, or access to the microphone or speaker. There's a C api for getting sensor data, which is also I/O, and you have file system access. But your main ways of getting input and creating output on a smartphone are inaccessible.
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Java Install did not complete. Error code: 1603
Uninstall all installed Java versions. Restart. Try 32-bit and 64-bit online and offline installers for the newest version. Same thing.
Screw you, Oracle, screw you...
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@whoever was doing android
Just use Java. Use the right tool for the job, and for Android that's clearly Java. It's silly to even consider using C++ imo unless you need to use something specific to C++. Don't make yourself dependent on languages.
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On September 01 2015 08:43 Nesserev wrote:Show nested quote +On September 01 2015 05:55 Blisse wrote:
@whoever was doing android
Just use Java. Use the right tool for the job, and for Android that's clearly Java. It's silly to even consider using C++ imo unless you need to use something specific to C++. Don't make yourself dependent on languages. What about using Java on top of C++? Java for the application itself, C++ for intensive program components? Never tried it myself, but it should be feasible and manageable, right?
Feasible? Sure. Performance improving? Depends on what you mean with "intensive program components". Most stuff normal people call "intensive program components" are better programmed in Java, both to reduce complexity and because what they call intensive is not really all that intensive, and thus running it on the heavily optimized Android JVM is actually faster than an NDK library. If, however, with intensive program components you mean stuff like game engines or video processing (OpenCV for instance, is a thinly veiled Java wrapper around an NDK library), then yes, optimized C++ code will run better than run those algorithms in Java.
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The best question is, "why?" If there is a good reason to be writing C++ code you would hopefully already have an app built using Java that you can benchmark/profile and categorically say that the reason you are seeing performance issues is because you are using Java and not something else. You should code to the platform when it comes to mobile devices, because any other idea is a terrible waste of time. This is generally the approach you should take, as languages can be thought of as tools. Just as physical tools have their respective places for different tasks, so do software engineering tools, and Java as a tool is the best fit for Android.
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Bisutopia19368 Posts
If you want to program for the Android use C#! Especially if you are a C++ programmer and just not willing to make that java jump. Working in C# will push you closer to the same concepts java enforces while still keeping C++ syntax. Now at this point some of you may be thinking, "wtf c# and android"? Well there is a beautiful thing called unity that will make all your code work for the android and is super easy to use in app development. Just an idea :D
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On September 01 2015 11:28 BisuDagger wrote:
If you want to program for the Android use C#! Especially if you are a C++ programmer and just not willing to make that java jump. Working in C# will push you closer to the same concepts java enforces while still keeping C++ syntax. Now at this point some of you may be thinking, "wtf c# and android"? Well there is a beautiful thing called unity that will make all your code work for the android and is super easy to use in app development. Just an idea :D
Off topic:
+ Show Spoiler +I was really tempted to comment on your 3-0 prediction for Bisu in the preview article. The actual outcome would have made me regret any snarky remarks though so I'm happy I didn't.
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Bisutopia19368 Posts
On September 01 2015 15:36 Khalum wrote:Show nested quote +On September 01 2015 11:28 BisuDagger wrote:
If you want to program for the Android use C#! Especially if you are a C++ programmer and just not willing to make that java jump. Working in C# will push you closer to the same concepts java enforces while still keeping C++ syntax. Now at this point some of you may be thinking, "wtf c# and android"? Well there is a beautiful thing called unity that will make all your code work for the android and is super easy to use in app development. Just an idea :D Off topic: + Show Spoiler +I was really tempted to comment on your 3-0 prediction for Bisu in the preview article. The actual outcome would have made me regret any snarky remarks though so I'm happy I didn't.
+ Show Spoiler + I did it purely out being a Bisu fan and just having fun. I honestly thought it either go all five games of hero would win 3-1. Bisu has looked terrible vs Zerg these days. My serious predictions were 100% correct for the rest of the tournament at least :D. And snarky remarks welcome when I post a prediction like that lol.
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I've got the most bizarre SQL problem that's driving me crazy. I have an update statement that joins several tables together and updates one of the tables. When executed, the statement updates x number of rows. However, it's not updating all the rows it should. If you take the exact same where/join conditions and do a select, it returns more rows than it's updating.
The only thing I can think of is that the table I'm trying to update has duplicates based on the join conditions, but I've already checked and it's not the case. It's blowing my mind. Any idea why this might happen? I'm using MS SQL Server, btw. See code below if you really want to see it:
+ Show Spoiler +
--This updates 95,505 rows
update dd
set dd.DealPerRevSum = dd.DealPerRevSum
from AlgorithmStructuresToDeals ad
inner join AlgorithmDealsWithDates dd on dd.DealId = ad.DealId
inner join #temp t
on t.StructureId = ad.StructureId
and t.DealId = ad.DealId
--This returns 97,355
select count(*)
from AlgorithmStructuresToDeals ad
inner join AlgorithmDealsWithDates dd on dd.DealId = ad.DealId
inner join #temp t
on t.StructureId = ad.StructureId
and t.DealId = ad.DealId
Edit: Nevermind, I just realized what the issue is. The table I'm trying to update has rows used more than once in the join. Thanks!
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On September 01 2015 08:43 Nesserev wrote:Well, your biggest problem is that you're running Windows 
It's not even my computer and I'm still mad. All I run now is #! (crunchbang) since nothing else works reasonably fast with modern features on the only 10 year old laptop (if not older) I have.
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On September 01 2015 08:43 Nesserev wrote:Well, your biggest problem is that you're running Windows
Windows is a good operating system for those who need to do work instead of waste time googling basic stuff as you do for Linux/*NIX.  Also better support. Do we still argue about Windows vs Linux in 2015?
Linux was good when performance was needed, but CPUs are so powerful nowadays that it doesn't matter. Linux is still a good server though.
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On September 02 2015 06:22 darkness wrote:Show nested quote +On September 01 2015 08:43 Nesserev wrote:Well, your biggest problem is that you're running Windows Windows is a good operating system for those who need to do work instead of waste time googling basic stuff as you do for Linux/*NIX. Also better support. Do we still argue about Windows vs Linux in 2015? Linux was good when performance was needed, but CPUs are so powerful nowadays that it doesn't matter. Linux is still a good server though.
Linux has a better desktop environment than Windows (or at least, all the desktop environments that I've used are better currently), is generally easier to use if you use something like Ubuntu, and has a whole bunch of advantages over Windows. The only reason I keep my Windows install is application support, specifically games. Linux is far more comfortable for everything else.
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I put Ubuntu on my laptop to install AMP with less hassle, and ended up using it because it has better support for the trackpad (two fingers to scroll instead of the tiny strip on the side.)
CPUs are not so powerful nowadays if you care about power/heat, in fact because of energy management they're often below 1 GHz. Also, space may be at a premium with a SSD, and here Windows is twice the size.
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Also, I remember that a big part of Linux vs Windows discussion in corporate environment came down to costs and ease of implementation. There's no arguing that you can run nix on your machines at lower costs than Windows. What's interesting is that it's actually easier for people to transition from Windows to Linux than from one version of Windows to another (that's why the government of Austria decided to switch despite MS giving them 95% discount if I remember correctly).
A lot of hate towards Linux comes from super outdated premise that it's harder to configure and use than Windows, which isn't true. Sure, if you go with a distro like Debian, Gentoo or Arch you'll have to do a lot of work yourself since they're targeted at either experienced users or those willing to spend time learning Linux management from the ground up. On the other end of the spectrum you have distros like Ubuntu or openSuse, which "just work" (they even ask you for a permission to automatically install proprietary codecs and software after installation - java, flash and such). Installing them is really easy, usage is also much easier than Windows because of many reasons:
a) they come packed with useful things (browser that doesn't suck, media players that don't suck, image manipulation programs, full office suite, codecs, java, flash, graphics drivers etc. etc. stuff you have to spend hours setting up after Windows installation)
b) easier app installation (you just type the name of an app you want, or a part of it and select packages from the list, alternatively you can type one command in the terminal, no more browsing throught the Internet, downloading, extracting, going through installation wizards etc.)
c) security, no more nagging antivirus bullshit.
You don't have access to as many games on Linux (which is slowly changing since Valve started pushing their SteamOS), but unless you need something that works only under Windows for your work or all the games then there's absolutely no other reason to use it.
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When I was last testing Linux, it was a while ago; I think it was in 2011 and I first tried Linux in about 2004-2005, so I have known Linux for quite a long time. Tried distributions in order: openSUSE, Slackware, Debian, Ubuntu, Gentoo. Thanks, but I remember how many hours I invested in configuring basic stuff with Linux such as X.org (resolution/fonts/language), kernel menu config, etc. These things are only a few clicks on Windows. Good OS as I said, but not for desktop. It's unnecessarily complex. That's probably fine if you have free time and/or you're an IT guy, but sometimes you don't want to bother.
Edit: Also Linux programs were very limited and not so user friendly back then.
Edit 2: It's not a reason for me not to use Linux, but Linus is an asshole when he talks about C++ and NVIDIA.
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I tried ubuntu for like 1 or 2 years and wasn't happy with it.
We should just agree that all of this is entirely subjective. Some people like windows, some like <insert linux distribution here>. For various subjective reasons. That's all there is to it.
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i've been using arch for 6 years on my work/school computer and couldn't be happier
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EPT
