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  • Are primitive types garbage collected in Android?

    - by snctln
    I know this may be a dumb question, but my background is more in c++ and managing my own memory. I am currently cutting down every single allocation that I can from one of my games to try and reduce the frequency of garbage collection and perceived "lag", so for every variable that I create that is an Object (String and Rect for example) I am making sure that I create it before hand in my constructor and not create temporary variables in simple 10 line functions... (I hope that makes sense) Anyways I was working though it some more tonight and I realized that I may be completely wrong about my assumption on garbage collection and primitive types (int, boolean, float) are these primitive type variables that I create in a 10 line function that gets called 20 times a second adding to my problem of garbage collection? So a year ago every few seconds I would see a message in logcat like GC freed 4010 objects / 484064 bytes in 101ms Now I see that message every 15-90 seconds or so... So to rephrase my question: Are primitive types (int, float, boolean, etc) included when seeing this message?

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  • [Assembly] jnz after xor?

    - by kotarou3
    After using IDA Pro to disassemble a x86 dll, I found this code (Comments added by me in pusedo-c code. I hope they're correct): test ebx, ebx ; if (ebx == false) jz short loc_6385A34B ; Jump to 0x6385a34b mov eax, [ebx+84h] ; eax = *(ebx+0x84) mov ecx, [esi+84h] ; ecx = *(esi+0x84) mov al, [eax+30h] ; al = *(*(ebx+0x84)+0x30) xor al, [ecx+30h] ; al = al XOR *(*(esi+0x84)+0x30) jnz loc_6385A453 Lets make it simpler for me to understand: mov eax, b3h xor eax, d6h jnz ... How does the conditional jump instruction work after a xor instruction?

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  • What is technically more advanced: Python or Assembler? [closed]

    - by el ka es
    I wondered which of these languages is more powerful. With powerful I don't mean the readability, assembler would be naturally the winner here, but something resulting from, for example, the following factors: Which of them is more high-level? (Both aren't really but one has to be more) Who would be the possibly fastest in compiled state? (There is no Python compiler out there as far as I know but it wouldn't be hard writing one I suppose) Which of the both has the better code length/code action ratio? What I mean is If you get to distracted by the, compared to Python, improved readability of assembler, just think of writing plain binary/machine code as what assembler assembles to. Both languages are so basic that it should be possible to answer the question(s) in a rather objective view, I hope.

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  • What happened to Perl?

    - by llasa
    I will try to keep this as objective as possible. I've been dealing with PHP since 3 years know, I have always known of Perl but never really "dived" into it. So I took a look at some Perl code examples and I thought: Wow, It's like PHP just failed at cloning it. My questions are: What is bad about Perl? What are the disadvantages that made it so extremely unpopular so that it is actually dying right know? Why could PHP take over? What does PHP have (or what did it have in the times of PHP4) that made it rise in popularity compared to Perl? I'm rather young and the questions above are a bit subjective and I think you can only really answer them when you have experienced the rise of PHP along with the fall of Perl. Unless my question before I hope that this one here can be more or less completely answered. There have to be definite disadvantages Perl has compared to PHP that made it fall.

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  • Division, Remainders and only Real Numbers Allowed

    - by Senica Gonzalez
    Trying to figure out this pseudo code. The following is assumed.... I can only use unsigned and signed integers (or long). Division returns a real number with no remainder. MOD returns a real number. Fractions and decimals are not handled. INT I = 41828; INT C = 15; INT D = 0; D = (I / 65535) * C; How would you handle a fraction (or decimal value) in this situation? Is there a way to use negative value to represent the remainder? In this example I/65535 should be 0.638, however, with the limitations, I get 0 with a MOD of 638. How can I then multiply by C to get the correct answer? Hope that makes sense.

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  • Stop multiple sessions accessing the same file simultaneously

    - by Pablo
    Is it possible to lock a file to stop it being opened while GD library is accessing it? What I am looking to achieve is similar to a database 'serialzable' level of isolation... I want to ensure that only one session/user can access an image at a time to stop a 'dirty read'. May application allows users to add an image of choice to a bigger image. for example the big image is empty Raj & Janet upload their images Raj's session opens the big image. 1 ms later Janet's session opens the big image. Raj's session add's his image and saves the big image 1 ms later Janet's session adds his image and saves its version of the big image. As a result Raj's image is not in the final image as Janet's version overwrote it. I hope that makes it clear enough.

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  • Can I pass data via JQUERY to ASP.NET MVC controller action and have a view rendered in new browser

    - by Simon Lomax
    Hi, Can anyone advise if its possible to pass data via JQUERY to an ASP.NET MVC controller action and have a view rendered in new browser tab based on the model data passed to the action method. My scenario is that I have a Jqgrid populated with product info on a page. The user would tick the items in the grid that they would like a label produced for. After they've made their slection they would click a button and I would like (if possible) to render a view of that contains a label for each selected item and have the view render in a new browser tab. All the code to allow the selections and post the relevant data back to the action method is all working fine and I know its easy to use the Jquery $(selector).load() command to populate an element on the current page with the HTML returned from the action. But is it possible to populate an element on a page in a new browser tab. If it is how would I go about it? Hope this make sense.

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  • XCode Intellisense Question

    - by Cody C
    I've always seem to work around this lack of knowledge but I thought I would ask the community. I hope this question will make sense. In XCode, when I call a function that has several parameter the intellisense pops up. When I hit TAB the first time, it takes me directly to the first parameter. How do I get to the next parameter easily. If I hit TAB again, it puts an actual TAB in the line. For the last month I've been using arrow keys but I figured there must be a keyboard shortcut.

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  • how to read a User uploaded file, without saving it to the database

    - by GoodGets
    I'd like to be able to read an XML file uploaded by the user (less than 100kb), but not have to first save that file to the database. I don't need that file past the current action (its contents get parsed and added to the database; however, parsing the file is not the problem). Since local files can be read with: File.read("export.opml") I thought about just creating a file_field for :uploaded_file, then trying to read it with File.read(params[:uploaded_file]) but all that does is throw a TypeError (can't convert HashWithIndifferentAccess into String). I really have tried a lot of various things (including reading from the /tmp directory as well), but could get none of them to work. I hope the brevity of my question doesn't mask the effort I've given to try to solve this on my own, but I didn't want to pollute this question with a hundred ways of how NOT to get it done. Big thanks to anyone who chimes in.

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  • Specify an inline callback function as an argument.

    - by Matthias Vance
    LS, Let me first explain what I'm trying to achieve using some pseudo-code (JavaScript). // Declare our function that takes a callback as as an argument, and calls the callback with true. B(func) { func(true); } // Call the function B(function(bool success) { /* code that uses success */ }); I hope this says it all. If not, please comment on my question so I can write a little more to clarify my issue. What I want is to have code like this in C++. I have tried to use lambda functions, but I was unable to specify a parameter type for those. Kind regards, Matthias Vance

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  • How2 display Image from DB in datagrid?

    - by Saverio Tedeschi
    Hope it's not yet been answered, but I've googled for quite a long time, and I've not been able to get it working. In brief, I've a SL4 page with a DataGrid filled accordingly to parameters passed from the previous page, so I fill the context in code, with a "RIA" query (w/parameters as well). So far, so good. I get the XAML declared columns as expected but the Photo templated column, which holds just an image control. I think I can use the LoadingRow event, but can some1 give me some code on how to get my goal (image is in in the context from DB)? Thanks in advance

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  • Regular Expression for any number divisible by 60 using C# .Net ?

    - by Steve Johnson
    Hi there, I need to apply validation on input time intervals that are taken in as seconds. Now i am not really good at Regular expressions. So can any body help making a regular expression that can test whether a number is divisible by 60. I was wondering if i could use to test one that check that the number is divisible by 10 and then check whether the same is divisible by 6. For number divisible by 10 here [\d*0] is the expression i guess. Please correct me if i am wrong. Hope somebody solves my problem. Thanks

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  • Can squid forward DNS queries to a DNS server?

    - by pravin
    This might something be completely impossible to achieve, but before I give it a shot thought I might get some advice from a fellow geek. Would squid proxy DNS queries as well? I would like to forward DNS queries to go through squid and use squid's DNS error page, of course by customizing it. I see the DNS queries are hitting my squid box on UDP port 53. I can setup a port forwarding so that all these queries get sent to squid's port 3128. But would squid understand its a DNS query and forward those queries to the dns server set in squid.conf? I hope my question is clear but please shout up and I would be glad to give you some more info if needed. Thanks guys!

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  • Social Gold API Integration Help Wanted

    - by xotyc
    Hi, Where can I find someone who is experienced in Social Gold API Integration with a private social networking website (as opposed to Facebook or others)? My network in built on the NING.com platform. Hope that's not seen as a negative thing. I need to integrate Social Gold virtual currency but have no knowledge of API coding etc. I understand this will only take less than an hour to do but I need someone who knows what they're doing and who will be 100% ethical in their work. Thanks, RB

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  • prevent bots to query my database several times

    - by Alain
    Hi all, I'm building an application that is a kind of registry. Think about the dictionary: you lookup for a word and it return something if the word is founded. Now, that registry is going to store valuable informations about companies, and some could be tempted to get the complete listing. My application use EJB 3.0 that replies to WS. So I was thinking about permits a maximum of 10 query per IP address per day. Storing the IP address and a counter on a table that would be empty by a script every night. Is it a good idea/practice to do so? If yes, how can I get the IP address on the EJB side? Is there a better way to prevent something to get all the data from my database? I've also though about CAPTCHA but I think it's a pain for the user, and sometime, they are difficult to read even for real human. Hope it's all clear since I'm not english... Thanks Alain

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  • C# Winforms: How to display a loading form?

    - by Martijn
    I have a grid and when a row is double clicked a form is loaded. However a lot of data must be loaded, so I'd like to display a simple form with the text 'loading, please wait..'. And when all loading is finished, the form must disappear. This is what I have right now, but it doesn't work: Code that invokes the form with lots of data: FormWithLotData form = new FormWithLotData(); form.ShowDialog(this); Constructor of FormWithLotData: // Show load form FormIsLoading frm = new FormIsLoading(); _CloseLoadForm closeForm = new _CloseLoadForm(frm.Close); System.Threading.Thread thread = new System.Threading.Thread(frm.Show); thread.Start(); InitializeComponent(); this.Visible = false; LoadAllData(); this.Visible = true; // Close load form Invoke(closeForm); Hope you can help me out.

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  • PS using Get-WinEvent with FilterXPath and datetime variables?

    - by Jordan W.
    I'm grabbing a handful of events from an event log in chronological order don't want to pipe to Where want to use get-winevent After I get the Event1, I need to get the 1st instance of another event that occurs some unknown amount of time after Event1. then grab Event3 that occurs sometime after Event2 etc. Basically starting with: $filterXML = @' <QueryList> <Query Id="0" Path="System"> <Select Path="System">*[System[Provider[@Name='Microsoft-Windows-Kernel-General'] and (Level=4 or Level=0) and (EventID=12)]]</Select> </Query> </QueryList> '@ $event1=(Get-WinEvent -ComputerName $PCname -MaxEvents 1 -FilterXml $filterXML).timecreated Give me the datetime of Event1. Then I want to do something like: Get-WinEvent -LogName "System" -MaxEvents 1 -FilterXPath "*[EventData[Data = 'Windows Management Instrumentation' and TimeCreated -gt $event1]]" Obviously the timecreated part bolded there doesn't work but I hope you get what I'm trying to do. any help?

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  • Mix RGB colors (L*a*b*)

    - by Samuel
    Hello! Basically I want two mix two colours color1 and color2. Since simple calculation's bring up stuff like blue+yellow = grey ((color1.r + color2.r)/2 etc) i did some research and found that apparently mixing colors in order for the mixed color to look like we expect it too (e.g. blue+yellow = green) isn't that straight forward. What another stackoverflow post taught me was that in order two achieve the mixture correctly i'd have to use the L*a*b* space / CIELAB and linked to the wikipedia page about this topic. I found it informative but i couldn't really understand how to convert RGB to (sRGB and than to) L*a*b* - how to mix the obtained colors and how to convert back I hope somebody here can help me Thanks, Samuel

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  • merging two duplicate contacts/CfoldFusion

    - by jil
    having to do with data integrity - I maintain a coldfusion database at a small shop that keeps addresses of different contacts. These contacts sometimes contain notes in them. When you are merging two duplicate contacts, one may be created in 2002 and one in 2008. If the contact in 2002 has notes prior to 2008, my question would be does it matter if you merge these contacts and keep the 2008 contact's ID number? Would that affect the data integrity or create any sort of issues with the notes earlier than 2008? I hope I've accurately described my scenario, as I am not familiar with the proper technical terms. I really appreciate the help sir!

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  • CSS 100% Height, and then Scroll DIV not page

    - by Justin
    Okay so I haven't been able to find a question with an answer yet, so I decided to make my own. I am trying to create a 100% fluid layout, which technically I have done. http://stickystudios.ca/sandbox/stickyplanner/layout/index2.php BUT, what I want it to now do, is make the page 100% in HEIGHT... But I don't want the page to scroll I want the inner DIV to scroll. So I believe in short I want it to detect the height of the viewport screen, go 100%, and then IF content is longer then the screen, scroll the specific DIV, NOT the page. I hope this makes sense. Thanks in advance. Justin

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  • Getting Tap/Touch Position when selecting a TableView cell

    - by Omer
    Hi, hope to get some help here because this is something that really makes me mad... I have a view with a tableView, and when I tap a cell I want to present a popOver window pointing the arrow to the cell I tapped. the things that I think I need is: 1- the position of the cell in the screen (not in the view, because on large tables the Y value of the cell's rect could be grater than screen hight) or 2- a CGPoint or something similar that represents the point in the screen I tapped. I can't figured this out, and makes me really mad!!! Any help will very very very very usefull. Have a nice day.

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  • how to use found_rows in oracle package to avoid two queries

    - by Omnipresent
    I made a package which I can use like this: select * from table(my_package.my_function(99, 'something, something2', 1, 50)) I make use of the package in a stored procedure. Sample stored procedure looks like: insert into something values(...) from (select * from table(my_package.my_function(99, 'something, something2', 1, 50))) a other_table b where b.something1 = a.something1; open cv_1 for select count(*) from table(my_package.my_function(99, 'something, something2', 1, 50)) So I am calling the same package twice. first time to match records with other tables and other stuff and second time to get the count. Is there a way to get the count first time around and put it into a variable and second time around I just pick that variable rather than calling the whole query again? Hope it makes sense.

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  • python: using __import__ to import a module which in turn generates an ImportError

    - by bbb
    Hi there, I have a funny problem I'd like to ask you guys ('n gals) about. I'm importing some module A that is importing some non-existent module B. Of course this will result in an ImportError. This is what A.py looks like import B Now let's import A >>> import A Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/tmp/importtest/A.py", line 1, in <module> import B ImportError: No module named B Alright, on to the problem. How can I know if this ImportError results from importing A or from some corrupt import inside A without looking at the error's string representation. The difference is that either A is not there or does have incorrect import statements. Hope you can help me out... Cheers bb

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  • Custom error handling Asp .Net

    - by lidermin
    Hi, I have a doubt: On my web application, I had configured my web.config file to set customerrors to ON, so here it is: <customErrors mode="On" defaultRedirect="Error.aspx"> <error statusCode="403" redirect="Error.aspx" /> <error statusCode="404" redirect="Error.aspx" /> </customErrors> For explaining propouses I only captured the 403 and 404 error (and the defaultRedirect obviouly). But I would like to get more details of the error on the page: Error.aspx somehow; but not creating each page for each kind of error. Is there a way to include certain code on my error page (Error.aspx) to get the detail of what raised that error?. Hope myself clear. Thanks PD. I'm using C#.

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  • Custom error handling Asp .Net

    - by lidermin
    Hi, I have a doubt: On my web application, I had configured my web.config file to set customerrors to ON, so here it is: <customErrors mode="On" defaultRedirect="Error.aspx"> <error statusCode="403" redirect="Error.aspx" /> <error statusCode="404" redirect="Error.aspx" /> </customErrors> For explaining propouses I only captured the 403 and 404 error (and the defaultRedirect obviouly). But I would like to get more details of the error on the page: Error.aspx somehow; but not creating each page for each kind of error. Is there a way to include certain code on my error page (Error.aspx) to get the detail of what raised that error?. Hope myself clear. Thanks PD. I'm using C#.

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