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  • Basic Login Script using php and mysql inquiry

    - by Matt
    Attempting to write a check for a login script to see if the username is available. Would the best way to write this query be to check if isset(!_POST[]) for both values (nick and pass) then connect to database WHERE the mysql database for the usernick requested return the user id if the usernick exists evaluate if isset($id) to see if the user name is taken and use that to continue to creating an entry Does this logically sound like a method to check for login without using excessive code sorry for not posting the code, it is on another computer and this computer is locked down by my administrator at work... Also, is there another way to evaluate if a value exists in the database? For instance, instead of setting $id to the return value of the mysql database can i just ping the mysql database for the information and have it return a Boolean result so I am not putting out any user information. Thanks, Matt

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  • PHP: session isnt saving before header redirect

    - by Matt
    Hi guys, I have read through the php manual for this problem and it seems quite a common issue but i have yet to find a solution. I am saving sessions in a database. My code is as follows: // session $_SESSION['userID'] = $user->id; header('Location: /subdirectory/index.php'); Then at the top of index.php after the session_start(), i have var_dumped the $_SESSION global and the userID is not in there. As i said ive looked through the PHP manual (http://php.net/manual/en/function.session-write-close.php) and neither session_write_close or session_regenerate_id(true) worked for me. Does anybody know a solution? Edit: I have session_start() at the top of my file. When i var_dump the session global before the header redirect, i see the userID in there, but not in the other file, which is in a subdirectory of this script Thanks, Matt

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  • Really new to XCode. Why won't the thing run?

    - by Matt W
    Hi, I'm trying to follow the April 2009 and Winter 2010 Stanford iPhone app development videos and I'm running up against the same problems with both. First, they don't appear to be using the latest version of XCode - the Outlets and Actions panels are in a different window and there is little info on the net about this (other than one other post on S.O.F.) Second, having got to the point where I've managed to connect the slider, label and changedLabelText connections, I save, build and run the app - the simulator loads, the app loads and then promptly closes again. What's going on? I have not written any code yet and I still have an app which, while it compiles, does not behave! Is there a better starting point for an XCode noob than the Stanford vids? Thanks, Matt.

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  • WPF UserControl Embedded Animation

    - by Matt B
    Hi all, I have a UserControl called Beetle.xaml which has animation makeing the legs move. So far so good. I added this to my Background.xaml page by decaring the xmlns and xaml as: xmlns:my="clr-namespace:Intellident.Liber8.GUI.Theme.Jungle" and <my:Beetle VerticalAlignment="Bottom" HorizontalAlignment="Left" Margin="180,0,0,175"> <UserControl.RenderTransform> <MatrixTransform x:Name="trnBeetle" /> </UserControl.RenderTransform> </my:Beetle> However I get errors telling me that I can't declare my:Name as I'm in the wrong scope. I can't declare my:Name as this doesn't exist. How do I do this, I want to create a path animation on the beetle to make him walk around... Ta, Matt. EDIT: THought I'd point out that both Beetle.xaml and Background.xaml live in Intellident.Liber8.GUI.Theme.Jungle namescope.

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  • Android: MediaPlayer gapless or seamless Video Playing

    - by John Wang
    I can play the videos fine back to back by implementing the OnCompletionListener to set the data source to a different file. No problems there. I call reset() and prepare() just fine. What I haven't been able to figure out, is how to get rid of the 1-2 second gap screen flicker between the data source change and the new video starting. The gap shows a black screen, and I haven't found any way to get around it. I've tried setting the background of the parent view to an image, but it manages to bypass that. Even if the SurfaceView is transparent (which it is by default.) I've also tried to have the multiple video files played at the same time, and switching mediaplayer's display when one ends and the other is supposed to start. The last thing I tried, was to have a second view in the background that I show temporarily while the video is "preparing" and removing it when the video is ready to start. That also wasn't very seamless. Is there any way to get rid of that gap. Running a video in a loop works wonderfully and does exactly what I want with the exception that it's looking through the same video instead of playing a different one that I pick. main.xml <?xml version="1.0" encoding="utf-8"?> <FrameLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:background="@drawable/background" android:layout_height="fill_parent"> <SurfaceView android:id="@+id/surface" android:layout_width="fill_parent" android:layout_height="fill_parent" android:layout_gravity="center"> </SurfaceView> </FrameLayout> Player.java public class Player extends Activity implements OnCompletionListener, MediaPlayer.OnPreparedListener, SurfaceHolder.Callback { private MediaPlayer player; private SurfaceView surface; private SurfaceHolder holder; public void onCreate(Bundle b) { super.onCreate(b); setContentView(R.layout.main); surface = (SurfaceView)findViewById(R.id.surface); holder = surface.getHolder(); holder.addCallback(this); holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS); } public void onCompletion(MediaPlayer arg0) { File clip = new File(Environment.getExternalStorageDirectory(),"file2.mp4"); playVideo(clip.getAbsolutePath()); } public void onPrepared(MediaPlayer mediaplayer) { holder.setFixedSize(player.getVideoWidth(), player.getVideoHeight()); player.start(); } private void playVideo(String url) { try { File clip = new File(Environment.getExternalStorageDirectory(),"file1.mp4"); if (player == null) { player = new MediaPlayer(); player.setScreenOnWhilePlaying(true); } else { player.stop(); player.reset(); } player.setDataSource(url); player.setDisplay(holder); player.setOnPreparedListener(this); player.prepare(); player.setOnCompletionListener(this); } catch (Throwable t) { Log.e("ERROR", "Exception Error", t); } }

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  • jQuery Validation using the class instead of the name value

    - by Matt
    Hi, I'd like to validate a form using the jquery validate plugin, but I'm unable to use the 'name' value within the html - as this is a field also used by the server app. Specifically, I need to limit the number of checkboxes checked from a group. (Maximum of 3.) All of the examples I have seen, use the name attribute of each element. What I'd like to do is use the class instead, and then declare a rule for that. html This works: <input class="checkBox" type="checkbox" id="i0000zxthy" name="salutation" value="1" /> This doesn't work, but is what I'm aiming for: <input class="checkBox" type="checkbox" id="i0000zxthy" name="i0000zxthy" value="1" /> javascript: var validator = $(".formToValidate").validate({ rules:{ "salutation":{ required:true, }, "checkBox":{ required:true, minlength:3 } } }); Is it possible to do this - is there a way of targeting the class instead of the name within the rules options? Or do I have to add a custom method? Cheers, Matt

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  • Eclipse autocomplete (content assist) with jsf2.0, xhtml and primefaces 2.2.RC1

    - by Keating Wang
    I use windows 7. I set the ClassPath like this: D:\EclipseProjects\DLFWD_NEW\WebContent\WEB-INF\lib\jsf-api.jar;D:\EclipseProjects\DLFWD_NEW\WebContent\WEB-INF\lib\jsf-impl.jar;D:\EclipseProjects\DLFWD_NEW\WebContent\WEB-INF\lib\primefaces-2.2.RC1.jar And I alse do this: Window Preferences General Content Types Text JSP Add (xhtml) But, it doesn't works. When I use netbeans. I do nothing, but the autocomplete function works well.

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  • dynamically change bitmap in imageView, android

    - by Junfei Wang
    All, I have a problem related to imageView, android. I have array which contains of 10 bitmap objects, called bm. I have a imageView, called im. Now I wanna show the bitmaps in the array in im one by one, so I did the following: new Thread(new Runnable() { public void run() { for(int j=0;j<10;j++){ im.setImageBitmap(bm[j]); } } }).start(); But the result only shows the last bitmap in the array. Can someone tell me what to do with this issue? Millions of thanks!

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  • What is the "task" in twitter Storm parallelism

    - by John Wang
    I'm trying to learn twitter storm by following the great article "Understanding the parallelism of a Storm topology" However I'm a bit confused by the concept of "task". Is a task an running instance of the component(spout or bolt) ? A executor having multiple tasks actually is saying the same component is executed for multiple times by the executor, am I correct ? Moreover in a general parallelism sense, Storm will spawn a dedicated thread(executor) for a spout or bolt, but what is contributed to the parallelism by an executor(thread) having multiple tasks ? I think having multiple tasks in a thread, since a thread executes sequentially, only make the thread a kind of "cached" resource, which avoids spawning new thread for next task run. Am I correct? I may clear those confusion by myself after taking more time to investigate, but you know, we both love stackoverflow ;-) Thanks in advance.

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  • How can I get JUnit test (driven from Ant script) to dump the stack of exception that causes failure

    - by Matt Wang
    We run JUnit test from Ant script, as follows. When the test failed, I expect it to output the stack dump of the exception that casuses the failure, but it doesn't. Is there any trick to get it dumped? <target description="Run JUnit tests" name="run-junit" depends="build-junit"> <copy file="./AegisLicense.txt" tofile="test/junit/classes/AegisLicense.txt" overwrite="true"/> <junit printsummary="yes" haltonfailure="no" fork="yes" forkmode="once" failureproperty="run-aegis-junit-failed" showoutput="yes" filtertrace="off"> <classpath refid="Aegisoft.testsupport.classpath"/> <classpath> <pathelement location="test/junit/classes"/> </classpath> <batchtest> <fileset dir="test/junit/src"> <include name="**"/> </fileset> </batchtest> </junit> <fail

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  • Is it possible to prevent a locally-running SWF (AS3) from downloading from my website?

    - by Matt
    I've got a crossdomain.xml file which allows SWFs running on only a certain few domains to download resources from my domain. However, one simple way around this is for a user to download the SWF to their local machine, and run it there (i.e. by double-clicking on it within Windows Explorer, not by running through http://localhost). It seems that when this happens, the crossdomain.xml file is ignored. I understand that in my actionscript, I can do this: if (Security.sandboxType.indexOf(Security.REMOTE) == -1) // running locally - don't allow However it is incredibly easy for someone to decompile the SWF and simply remove this line. Is it possible to do something on the server side to stop a locally running SWF to download from my site? I tried checking the referrer but this field often isn't populated. Does anyone have any other ideas? Thanks, Matt

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  • Can I force WPF rendering tier?

    - by Kai Wang
    Is there any way I can force WPF rendering tiers mentioned here? http://msdn.microsoft.com/en-us/library/ms742196.aspx For example I am on tier 2, but I want to simulate the application in tier 1 or 0 scenario.

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  • idiomatic way to take groups of n items from a list in Python?

    - by Wang
    Given a list A = [1 2 3 4 5 6] Is there any idiomatic (Pythonic) way to iterate over it as though it were B = [(1, 2) (3, 4) (5, 6)] other than indexing? That feels like a holdover from C: for a1,a2 in [ (A[i], A[i+1]) for i in range(0, len(A), 2) ]: I can't help but feel there should be some clever hack using itertools or slicing or something. (Of course, two at a time is just an example; I'd like a solution that works for any n.) Edit: related http://stackoverflow.com/questions/1162592/iterate-over-a-string-2-or-n-characters-at-a-time-in-python but even the cleanest solution (accepted, using zip) doesn't generalize well to higher n without a list comprehension and *-notation.

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  • Correct association mapping in Entity Framework

    - by Matt Thrower
    Hi, Trying to change two relationships in our entity framework from many-to-one to many-to-many relationships. So I tried the obvious thing: clicked on each association on the diagram, changed the appropriate end of the association accordingly and then changed the name of the navigation property to a plural to reflect the change. This lead to the following build error, or one each for the two changes I've made: Error 3002: Problem in mapping fragments starting at line 1761:Potential runtime violation of table CustomerServices's keys (CustomerServices.Id): Columns (CustomerServices.Id) are mapped to EntitySet CompiledDatabaseCustomerService's properties (CompiledDatabaseCustomerService.CustomerService.Id) on the conceptual side but they do not form the EntitySet's key properties (CompiledDatabaseCustomerService.CompiledDatabase.Id, CompiledDatabaseCustomerService.CustomerService.Id) I'm not entirely sure why this is happening, so unsurprisngly I haven't had much luck fixing it. I've tried fiddling with the mapping details and adding referential constraints to no avail. Anyone point me in the right direction? cheers, Matt

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  • Threads are blocked in malloc and free, virtual size

    - by Albert Wang
    Hi, I'm running a 64-bit multi-threaded program on the windows server 2003 server (X64), It run into a case that some of the threads seem to be blocked in the malloc or free function forever. The stack trace is like follows: ntdll.dll!NtWaitForSingleObject() + 0xa bytes ntdll.dll!RtlpWaitOnCriticalSection() - 0x1aa bytes ntdll.dll!RtlEnterCriticalSection() + 0xb040 bytes ntdll.dll!RtlpDebugPageHeapAllocate() + 0x2f6 bytes ntdll.dll!RtlDebugAllocateHeap() + 0x40 bytes ntdll.dll!RtlAllocateHeapSlowly() + 0x5e898 bytes ntdll.dll!RtlAllocateHeap() - 0x1711a bytes MyProg.exe!malloc(unsigned __int64 size=0) Line 168 C MyProg.exe!operator new(unsigned __int64 size=1) Line 59 + 0x5 bytes C++ ntdll.dll!NtWaitForSingleObject() ntdll.dll!RtlpWaitOnCriticalSection() ntdll.dll!RtlEnterCriticalSection() ntdll.dll!RtlpDebugPageHeapFree() ntdll.dll!RtlDebugFreeHeap() ntdll.dll!RtlFreeHeapSlowly() ntdll.dll!RtlFreeHeap() MyProg.exe!free(void * pBlock=0x000000007e8e4fe0) C BTW, the param values passed to the new operator is not correct here maybe due to optimization. Also, at the same time, I found in the process Explorer, the virtual size of this program is 10GB, but the private bytes and working set is very small (<2GB). We did have some threads using virtualalloc but in a way that commit the memory in the call, and these threads are not blocked. m_pBuf = VirtualAlloc(NULL, m_size, MEM_COMMIT, PAGE_READWRITE); ...... VirtualFree(m_pBuf, 0, MEM_RELEASE); This looks strange to me, seems a lot of virtual space is reserved but not committed, and malloc/free is blocked by lock. I'm guessing if there's any corruptions in the memory/object, so plan to turn on gflag with pageheap to troubleshoot this. Does anyone has similar experience on this before? Could you share with me so I may get more hints? Thanks a lot!

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  • what changes when your input is giga/terabyte sized?

    - by Wang
    I just took my first baby step today into real scientific computing today when I was shown a data set where the smallest file is 48000 fields by 1600 rows (haplotypes for several people, for chromosome 22). And this is considered tiny. I write Python, so I've spent the last few hours reading about HDF5, and Numpy, and PyTable, but I still feel like I'm not really grokking what a terabyte-sized data set actually means for me as a programmer. For example, someone pointed out that with larger data sets, it becomes impossible to read the whole thing into memory, not because the machine has insufficient RAM, but because the architecture has insufficient address space! It blew my mind. What other assumptions have I been relying in the classroom that just don't work with input this big? What kinds of things do I need to start doing or thinking about differently? (This doesn't have to be Python specific.)

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  • Remove trailing letters at the end of string

    - by wang
    I have some strings like below: ffffffffcfdeee^dddcdeffffffffdddcecffffc^cbcb^cb`cdaba`eeeeeefeba[NNZZcccYccaccBBBBBBBBBBBBBBBBBBBBBB eedeedffcc^bb^bccccbadddba^cc^e`eeedddda`deca_^^\```a```^b^`I^aa^bb^`_b\a^b```Y_\`b^`aba`cM[SS\ZY^BBB Each string MAY (or may not) end with a stretch of trailing "B" of varied length. I'm just wondering if we can simply use bash code to remove the "B" stretch? thx

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  • Proper usage of Java Weak Reference in case of nested collections

    - by Tong Wang
    I need to define a weak reference Map, whose value is a Set. I use Google collections' MapMaker, like this: Map<Class<? extends Object>, Set<Foo>> map = new MapMaker().weakKeys().weakValues().makeMap(); So, for Set<Foo>, can I use a normal HashSet? Or, do I have to create a weak HashSet, like this: Collections.newSetFromMap(new WeakHashMap<Foo, Boolean>()); And why? Another question, the key of my map is Class objects, when will a Class object become weakly reachable? In other words, what is the lifetime of a Class object? Thanks.

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  • Does it mean JVM Suspended?

    - by Joe.wang
    When my application run . I got a message says : Ping: Timed out waiting for signal from JVM. The JVM was launched with debug options so this may be because the JVM is currently suspended by a debugger. Any future timeouts during this JVM invocation will be silently ignored. What does that mean? It seems it will block any web request from outside? because when I upload a file to it, it failed. help me .

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  • how is a macro expanded in clojure?

    - by john wang
    In the book Programming Clojure(Stuart), when read how macros are expanded I got confused. user=> (defmacro chain ([x form] (list '. x form)) ([x form & more] (concat (list 'chain (list '. x form)) more))) #'user/chain The above macro can be expanded as: user=> (macroexpand '(chain a b c)) (. (. a b) c) But the following is only expanded to the first level: user=> (macroexpand '(and a b c)) (let* [and__3822__auto__ a] (if and__3822__auto__ (clojure.core/and b c) and__3822__auto__)) The and macro source: user=> (source and) (defmacro and([] true) ([x] x) ([x & next] `(let [and# ~x] (if and# (and ~@next) and#)))) Why is the chain macro expanded all the way but the and not ? Why is it not expanded to something like the following: user=> (macroexpand '(chain a b c d)) (. (chain a b c) d)

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  • Flex: Scale an Image so that its width matches contentWidth?

    - by Tong Wang
    I have a dynamic layout, where an image is loaded into an HBox: <mx:HBox ...> <mx:Image height="100%" .../> </mx:HBox> only the image's height is set on the image, so that it can take all the vertical space available, while its width is left undefined and I expect the width to scale accordingly with its height. It turns out that the image's height is equal to its contentHeight, i.e. height scales properly; however, the image's width is still the same as measuredWidth (the image's original width), and is not scaled accordingly. For example, if the image's original size is 800x600 and if the HBox is 300 in height, then image height will scale down to 300, however its width doesn't scale down to 400, instead it stays at 800. I tried to add an event listener to explicitly set the image width: <mx:Image id="img" height="100%" updateComplete="img.width=img.contentWidth;" .../> It works only the first time the image is loaded, after that, if I use Image.load() to dynamically load different images, it stops working - the image width is set to 0. Any help/advice will be highly appreciated.

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  • What is the best way to use Unicode in C++ on iPhone?

    - by Olli Wang
    Hi, I want to create my C++ libraries with Unicode support so they can be reused on other platforms. I have found the ICU (International Components for Unicode) project but I also found a discuss about Apple rejecting for using ICU (see http://tinyurl.com/y86phfb). So how do you guys use Unicode in C++ on iPhone? Thanks.

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  • links for 2010-12-16

    - by Bob Rhubart
    Oracle Solaris 11 Express: Network Virtualization and Resource Control | Oracle Clinic XiangBingLiu's detailed overview of Oracle Solaris 11 Express features, including Crossbow. (tags: oracle solaris virtualization crossbow) A New Threat To Web Applications: Connection String Parameter Pollution (CSPP) (The Oracle Global Product Security Blog) "CSPP, if carried out successfully, can be used to steal user identities and hijack web credentials. CSPP is a high risk attack because of the relative ease with which it can be carried out (low access complexity) and the potential results it can have (high impact)." -- Shaomin Wang (tags: oracle otn security cspp)

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