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• Does a static object within a function introduce a potential race condition?

  - by Jeremy Friesner

  I'm curious about the following code: class MyClass { public: MyClass() : _myArray(new int[1024]) {} ~MyClass() {delete [] _myArray;} private: int * _myArray; }; // This function may be called by different threads in an unsynchronized manner void MyFunction() { static const MyClass _myClassObject; [...] } Is there a possible race condition in the above code? Specifically, is the compiler likely to generate code equivalent to the following, "behind the scenes"? void MyFunction() { static bool _myClassObjectInitialized = false; if (_myClassObjectInitialized == false) { _myClassObjectInitialized = true; _myClassObject.MyClass(); // call constructor to set up object } [...] } ... in which case, if two threads were to call MyFunction() nearly-simultaneously, then _myArray might get allocated twice, causing a memory leak? Or is this handled correctly somehow?

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• What's void *userData exactly?

  - by mystify

  In a C function declaration, I have seen this parameter definition: void *userData so, what exactly is that? My guess: the void says it can be anything arbitrary, or even nothing. Almost similar to id of objective-c. It just allows to pass in whatever data structure you like. The star in front of userData says, that the argument must be passed in by reference. So when using this stuff in the function body, typically it must be casted and dereferenced. So if I pass in an pointer to SomeClass instance, I would get that like this: SomeClass *myObj = (SomeClass*)userData; In the case I had nothing special to pass along, I would provide NULL as argument. Are my assumptions correct? Or did I get something wrong?

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• Treat a void function as a value

  - by Brendan Long

  I'm writing some terrible, terrible code, and I need a way to put a free() in the middle of a statement. The actual code is: int main(){ return printf("%s", isPalindrome(fgets(malloc(1000), 1000, stdin))?"Yes!\n":"No!\n") >= 0; // leak 1000 bytes of memory } I was using alloca(), but I can't be sure that will actually work on my target computer. My problem is that free returns void, so my code has this error message: error: void value not ignored as it ought to be The obvious idea I had was: int myfree(char *p){ free(p); return 0; } Which is nice in that it makes the code even more unreadable, but I'd prefer not to add another function. I also briefly tried treating free() as a function pointer, but I don't know if that would work, and I don't know enough about C to do it properly. Note: I know this is a terrible idea. Don't try this at home kids.

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• Why doesn't C# support local static variables like C does?

  - by JoelFan

  Why doesn't C# have local static variables like C? I miss that!!

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• how to raise warning if return value is disregarded - gcc or static code check?

  - by Drakosha

  I'd like to see all the places in my code (C++) which disregard return value of a function. How can I do it - with gcc or static code analysis tool? Bad code example: int f(int z) { return z + (z*2) + z/3 + z*z + 23; } int main() { int i = 7; f(i); ///// <<----- here I disregard the return value return 1; } Update: it should work even if the function and its use are in different files free static check tool

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• Is void *p = 0L valid?

  - by Artefacto

  In this answer, sassman initializes a pointer with: zend_class_entry* ce = 0L; My question is – is this valid? I would say it isn't, to initialize the variable with a null pointer either an unadorned (and possibly casted to void *) 0 constant, or some macro that evaluates to that such as NULL should be used. However, I can't find definitive language in the standard that supports this interpretation. All it says is: An integer constant expression with the value 0, or such an expression cast to type void *, is called a null pointer constant.

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• Are static members of a generic class tied to the specific instance?

  - by mafutrct

  This is more of a documentation than a real question. I noticed the principle it is not described on SO yet (did I miss it?), so here goes: Imagine a generic class that contains a static member: class Foo<T> { public static int member; } Is there a new instance of the member for each specific class, or is there only a single instance for all Foo-type classes? It can easily be verified by code like this: Foo<int>.member = 1; Foo<string>.member = 2; Console.WriteLine (Foo<int>.member); What is the result, and where is this behavior documented?

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• Static background noise while using new headset Ubuntu 13.04

  - by ThundLayr

  Today I bought a new gaming headset (Gx-Gaming Lychas), and when I tried to record some gameplay-comentary I noticed that there always is a static background noise, I just recorded an example so you guys can listen it (no downloaded needed): http://www47.zippyshare.com/v/65167832/file.html I'm using Kubuntu 13.04 and Kernel version is 3.8.0-19, my laptop is an Acer Travelmate 5760Z, I tried tons of configurations on Alsamixer and none of them made result, I really need to get this working so any kind of help will be very aprecciated. cat /proc/asound/cards: 0 [PCH ]: HDA-Intel - HDA Intel PCH HDA Intel PCH at 0xc6400000 irq 44 cat /proc/asound/card0/codec#0 Codec: Conexant CX20588 Address: 0 AFG Function Id: 0x1 (unsol 1) Vendor Id: 0x14f1506c Subsystem Id: 0x10250574 Revision Id: 0x100003 No Modem Function Group found Default PCM: rates [0x160]: 44100 48000 96000 bits [0xe]: 16 20 24 formats [0x1]: PCM Default Amp-In caps: N/A Default Amp-Out caps: N/A State of AFG node 0x01: Power states: D0 D1 D2 D3 D3cold CLKSTOP EPSS Power: setting=D0, actual=D0 GPIO: io=4, o=0, i=0, unsolicited=1, wake=0 IO[0]: enable=0, dir=0, wake=0, sticky=0, data=0, unsol=0 IO[1]: enable=0, dir=0, wake=0, sticky=0, data=0, unsol=0 IO[2]: enable=0, dir=0, wake=0, sticky=0, data=0, unsol=0 IO[3]: enable=0, dir=0, wake=0, sticky=0, data=0, unsol=0 Node 0x10 [Audio Output] wcaps 0xc1d: Stereo Amp-Out R/L Control: name="Headphone Playback Volume", index=0, device=0 ControlAmp: chs=3, dir=Out, idx=0, ofs=0 Control: name="Headphone Playback Switch", index=0, device=0 ControlAmp: chs=3, dir=Out, idx=0, ofs=0 Device: name="CX20588 Analog", type="Audio", device=0 Amp-Out caps: ofs=0x4a, nsteps=0x4a, stepsize=0x03, mute=1 Amp-Out vals: [0x4a 0x4a] Converter: stream=8, channel=0 PCM: rates [0x560]: 44100 48000 96000 192000 bits [0xe]: 16 20 24 formats [0x1]: PCM Power states: D0 D1 D2 D3 D3cold EPSS Power: setting=D0, actual=D0 Node 0x11 [Audio Output] wcaps 0xc1d: Stereo Amp-Out R/L Control: name="Speaker Playback Volume", index=0, device=0 ControlAmp: chs=3, dir=Out, idx=0, ofs=0 Control: name="Speaker Playback Switch", index=0, device=0 ControlAmp: chs=3, dir=Out, idx=0, ofs=0 Amp-Out caps: ofs=0x4a, nsteps=0x4a, stepsize=0x03, mute=1 Amp-Out vals: [0x80 0x80] Converter: stream=8, channel=0 PCM: rates [0x560]: 44100 48000 96000 192000 bits [0xe]: 16 20 24 formats [0x1]: PCM Power states: D0 D1 D2 D3 D3cold EPSS Power: setting=D0, actual=D0 Node 0x12 [Audio Output] wcaps 0x611: Stereo Digital Converter: stream=0, channel=0 Digital: Digital category: 0x0 IEC Coding Type: 0x0 PCM: rates [0x160]: 44100 48000 96000 bits [0xe]: 16 20 24 formats [0x5]: PCM AC3 Power states: D0 D1 D2 D3 D3cold EPSS Power: setting=D0, actual=D0 Node 0x13 [Beep Generator Widget] wcaps 0x70000c: Mono Amp-Out Control: name="Beep Playback Volume", index=0, device=0 ControlAmp: chs=1, dir=Out, idx=0, ofs=0 Control: name="Beep Playback Switch", index=0, device=0 ControlAmp: chs=1, dir=Out, idx=0, ofs=0 Amp-Out caps: ofs=0x07, nsteps=0x07, stepsize=0x0f, mute=0 Amp-Out vals: [0x00] Node 0x14 [Audio Input] wcaps 0x100d1b: Stereo Amp-In R/L Control: name="Capture Volume", index=0, device=0 ControlAmp: chs=3, dir=In, idx=0, ofs=0 Control: name="Capture Switch", index=0, device=0 ControlAmp: chs=3, dir=In, idx=0, ofs=0 Device: name="CX20588 Analog", type="Audio", device=0 Amp-In caps: ofs=0x4a, nsteps=0x50, stepsize=0x03, mute=1 Amp-In vals: [0x50 0x50] [0x80 0x80] [0x80 0x80] [0x80 0x80] Converter: stream=4, channel=0 SDI-Select: 0 PCM: rates [0x160]: 44100 48000 96000 bits [0xe]: 16 20 24 formats [0x1]: PCM Power states: D0 D1 D2 D3 D3cold EPSS Power: setting=D0, actual=D0 Connection: 4 0x17* 0x18 0x23 0x24 Node 0x15 [Audio Input] wcaps 0x100d1b: Stereo Amp-In R/L Amp-In caps: ofs=0x4a, nsteps=0x50, stepsize=0x03, mute=1 Amp-In vals: [0x4a 0x4a] [0x4a 0x4a] [0x4a 0x4a] [0x4a 0x4a] Converter: stream=0, channel=0 SDI-Select: 0 PCM: rates [0x160]: 44100 48000 96000 bits [0xe]: 16 20 24 formats [0x1]: PCM Power states: D0 D1 D2 D3 D3cold EPSS Power: setting=D0, actual=D0 Connection: 4 0x17* 0x18 0x23 0x24 Node 0x16 [Audio Input] wcaps 0x100d1b: Stereo Amp-In R/L Amp-In caps: ofs=0x4a, nsteps=0x50, stepsize=0x03, mute=1 Amp-In vals: [0x4a 0x4a] [0x4a 0x4a] [0x4a 0x4a] [0x4a 0x4a] Converter: stream=0, channel=0 SDI-Select: 0 PCM: rates [0x160]: 44100 48000 96000 bits [0xe]: 16 20 24 formats [0x1]: PCM Power states: D0 D1 D2 D3 D3cold EPSS Power: setting=D0, actual=D0 Connection: 4 0x17* 0x18 0x23 0x24 Node 0x17 [Audio Selector] wcaps 0x30050d: Stereo Amp-Out Control: name="Mic Boost Volume", index=0, device=0 ControlAmp: chs=3, dir=Out, idx=0, ofs=0 Amp-Out caps: ofs=0x00, nsteps=0x04, stepsize=0x27, mute=0 Amp-Out vals: [0x04 0x04] Power states: D0 D1 D2 D3 D3cold EPSS Power: setting=D0, actual=D0 Connection: 4 0x1a 0x1b* 0x1d 0x1e Node 0x18 [Audio Selector] wcaps 0x30050d: Stereo Amp-Out Amp-Out caps: ofs=0x00, nsteps=0x04, stepsize=0x27, mute=0 Amp-Out vals: [0x00 0x00] Power states: D0 D1 D2 D3 D3cold EPSS Power: setting=D0, actual=D0 Connection: 4 0x1a* 0x1b 0x1d 0x1e Node 0x19 [Pin Complex] wcaps 0x400581: Stereo Control: name="Headphone Jack", index=0, device=0 Pincap 0x0000001c: OUT HP Detect Pin Default 0x04214040: [Jack] HP Out at Ext Right Conn = 1/8, Color = Green DefAssociation = 0x4, Sequence = 0x0 Pin-ctls: 0xc0: OUT HP Unsolicited: tag=01, enabled=1 Power states: D0 D1 D2 D3 D3cold EPSS Power: setting=D0, actual=D0 Connection: 2 0x10* 0x11 Node 0x1a [Pin Complex] wcaps 0x400481: Stereo Control: name="Internal Mic Phantom Jack", index=0, device=0 Pincap 0x00001324: IN Detect Vref caps: HIZ 50 80 Pin Default 0x90a70130: [Fixed] Mic at Int N/A Conn = Analog, Color = Unknown DefAssociation = 0x3, Sequence = 0x0 Misc = NO_PRESENCE Pin-ctls: 0x24: IN VREF_80 Unsolicited: tag=00, enabled=0 Power states: D0 D1 D2 D3 D3cold EPSS Power: setting=D0, actual=D0 Node 0x1b [Pin Complex] wcaps 0x400581: Stereo Control: name="Mic Jack", index=0, device=0 Pincap 0x00011334: IN OUT EAPD Detect Vref caps: HIZ 50 80 EAPD 0x0: Pin Default 0x04a19020: [Jack] Mic at Ext Right Conn = 1/8, Color = Pink DefAssociation = 0x2, Sequence = 0x0 Pin-ctls: 0x24: IN VREF_80 Unsolicited: tag=02, enabled=1 Power states: D0 D1 D2 D3 D3cold EPSS Power: setting=D0, actual=D0 Connection: 2 0x10* 0x11 Node 0x1c [Pin Complex] wcaps 0x400581: Stereo Pincap 0x00000014: OUT Detect Pin Default 0x40f001f0: [N/A] Other at Ext N/A Conn = Unknown, Color = Unknown DefAssociation = 0xf, Sequence = 0x0 Misc = NO_PRESENCE Pin-ctls: 0x40: OUT Unsolicited: tag=00, enabled=0 Power states: D0 D1 D2 D3 D3cold EPSS Power: setting=D0, actual=D0 Connection: 2 0x10* 0x11 Node 0x1d [Pin Complex] wcaps 0x400581: Stereo Pincap 0x00010034: IN OUT EAPD Detect EAPD 0x0: Pin Default 0x40f001f0: [N/A] Other at Ext N/A Conn = Unknown, Color = Unknown DefAssociation = 0xf, Sequence = 0x0 Misc = NO_PRESENCE Pin-ctls: 0x40: OUT Unsolicited: tag=00, enabled=0 Power states: D0 D1 D2 D3 D3cold EPSS Power: setting=D0, actual=D0 Connection: 2 0x10* 0x11 Node 0x1e [Pin Complex] wcaps 0x400481: Stereo Pincap 0x00000024: IN Detect Pin Default 0x40f001f0: [N/A] Other at Ext N/A Conn = Unknown, Color = Unknown DefAssociation = 0xf, Sequence = 0x0 Misc = NO_PRESENCE Pin-ctls: 0x00: Unsolicited: tag=00, enabled=0 Power states: D0 D1 D2 D3 D3cold EPSS Power: setting=D0, actual=D0 Node 0x1f [Pin Complex] wcaps 0x400501: Stereo Control: name="Speaker Phantom Jack", index=0, device=0 Pincap 0x00000010: OUT Pin Default 0x92170110: [Fixed] Speaker at Int Front Conn = Analog, Color = Unknown DefAssociation = 0x1, Sequence = 0x0 Misc = NO_PRESENCE Pin-ctls: 0x40: OUT Power states: D0 D1 D2 D3 D3cold EPSS Power: setting=D0, actual=D0 Connection: 2 0x10 0x11* Node 0x20 [Pin Complex] wcaps 0x400781: Stereo Digital Pincap 0x00000010: OUT Pin Default 0x40f001f0: [N/A] Other at Ext N/A Conn = Unknown, Color = Unknown DefAssociation = 0xf, Sequence = 0x0 Misc = NO_PRESENCE Pin-ctls: 0x00: Unsolicited: tag=00, enabled=0 Power states: D0 D1 D2 D3 D3cold EPSS Power: setting=D0, actual=D0 Connection: 1 0x12 Node 0x21 [Audio Output] wcaps 0x611: Stereo Digital Converter: stream=0, channel=0 Digital: Digital category: 0x0 IEC Coding Type: 0x0 PCM: rates [0x160]: 44100 48000 96000 bits [0xe]: 16 20 24 formats [0x5]: PCM AC3 Power states: D0 D1 D2 D3 D3cold EPSS Power: setting=D0, actual=D0 Node 0x22 [Pin Complex] wcaps 0x400781: Stereo Digital Pincap 0x00000010: OUT Pin Default 0x40f001f0: [N/A] Other at Ext N/A Conn = Unknown, Color = Unknown DefAssociation = 0xf, Sequence = 0x0 Misc = NO_PRESENCE Pin-ctls: 0x00: Unsolicited: tag=00, enabled=0 Power states: D0 D1 D2 D3 D3cold EPSS Power: setting=D0, actual=D0 Connection: 1 0x21 Node 0x23 [Pin Complex] wcaps 0x40040b: Stereo Amp-In Amp-In caps: ofs=0x00, nsteps=0x04, stepsize=0x2f, mute=0 Amp-In vals: [0x00 0x00] Pincap 0x00000020: IN Pin Default 0x40f001f0: [N/A] Other at Ext N/A Conn = Unknown, Color = Unknown DefAssociation = 0xf, Sequence = 0x0 Misc = NO_PRESENCE Pin-ctls: 0x00: Power states: D0 D1 D2 D3 D3cold EPSS Power: setting=D0, actual=D0 Node 0x24 [Audio Mixer] wcaps 0x20050b: Stereo Amp-In Amp-In caps: ofs=0x4a, nsteps=0x4a, stepsize=0x03, mute=1 Amp-In vals: [0x00 0x00] [0x00 0x00] Power states: D0 D1 D2 D3 D3cold EPSS Power: setting=D0, actual=D0 Connection: 2 0x10 0x11 Node 0x25 [Vendor Defined Widget] wcaps 0xf00000: Mono

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• Oracle Makes Social Services More Effective

  - by michael.seback

  By Brendan B. Read, TMCnet.com, April 5, 2010 Oracle Makes Social Services More Effective with New Oracle Social Services Suite Overworked, with too frequently heart-wrenching cases yet cash-strapped, social service agencies now have a new solution that has been expressly designed to help them accomplish more for their clients with the same resources. Oracle's Oracle Social Services Suite provides them with a complete, open and integrated platform for eligibility and case management to simplify eligibility determination increase caseworker efficiency and improve program effectiveness. The Social Services Suite also includes updated versions of Oracle's Siebel CRM Public Sector 8.2 and Oracle Policy Automation 10. Here are the Oracle Social Services Suite and Siebel CRM Public Sector 8.2 features and benefits: read the article here.

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• Analyst Firm Gives Oracle Highest Rating for Local Government CRM

  - by michael.seback

  Gartner, Inc. has given Oracle a rating of "Strong Positive," the highest possible ranking, in its report "MarketScope for Local Government CRM Products." The report compares the offerings of nine providers of CRM commercial off-the-shelf software for local government agencies. Gartner notes that a provider receiving a Strong Positive ranking must be a "provider of strategic products, services or solutions..." and recommends that "customers continue with planned investments and potential customers consider this vendor a strong choice for strategic investments." "Local governments today face tough challenges as they are tasked with reducing costs while at the same time providing citizens with services and information more quickly and efficiently than ever before. Oracle is pleased to be recognized by Gartner with a Strong Positive rating in its 'MarketScope for Local Government CRM Products' report, as we believe it reflects our commitment to helping our public sector customers meet these challenges today and in the future," said Mark Johnson, senior vice president, Oracle Public Sector. Read the highlights.

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• Unit testing an iPhone static library with XCode 3

  - by teabot

  I am writing a number of static libraries for the iPhone and wish also to have suites of unit tests. XCode 3 provides templates for both static libraries and unit tests but I am wondering how they should fit together in a static library project? In my static library project I have created a target for unit testing but expect to also create an executable to kick off the unit tests than run against the classes in the static library. What is the procedure for doing this?

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• Routing static IP traffic on a Comcast Business Class IP Gateway (SMCD3G-CCR)

  - by Jakobud

  We are in the process of replacing our firewall, which is currently the only thing connected to our Comcast Business Class modem. Comcast gives us 5 static IP addresses. Currently, all traffic to all 5 static IPs goes directly to the existing firewall. Eventually, obviously all traffic will goto the new firewall, once the old firewall is removed from the network. But in the meantime, as we will have two firewalls plugged into the same Comcast modem, I need to route certain traffic to the new firewall instead of the old one. The firewall switchover is going to be slow and gradual as I am testing it, so I can't simply unplug the existing firewall and plug in the new one. So my question is, how do I tell the modem to route all traffic that goes to a specific IP to goto the new firewall instead of the old one? I've logged into the web interface for the modem, but the available options aren't very clear. There is a 1-to-1 NAT option (which I can't seem to get the interface for it to work properly) but I also see a "Static Routing" section. I always understood Static Routing to refer to routing data within the LAN though, so I'm not sure if that's what I'm looking for or not. Keep in mind, I'm not looking to do simple port forwarding. I'm wanting 100% of traffic to certain public static IPs to go to the specified connected firewall (I'll deal with service policies there). The modem is an SMC SMCD3G-CCR and is labeled as a Comcast Business Class Business IP Gateway. Any help or direction would be greatly appreciated.

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• Static IPv6 address advertising and IPv6 autoconfig in Debian/Ubuntu

  - by Pascal

  I have a network that advertises IPv6 addresses through IPv6 autoconfig. To allow DNS lookups and to have fancy IP addresses, we setup "static" IPv6 addresses through /etc/network/interfaces: auto eth0 iface eth0 inet dhcp iface eth0 inet6 static address a:b:c:d:e::f netmask 64 Whenever we now connect through IPv6 Linux uses the IPv6 autoconfig address: a:b:c:d:21d:60ff:fe4a:479 and not the static IPv6 address: a:b:c:d:e::f A server on the other side only sees the autoconfig address. Is there a way to force linux (Debian/Ubuntu) to use the static address for outgoing packets? This is especially interesting for reverse DNS and firewall settings. I don't want to disable the IPv6 autoconfig since I don't have control over the settings the router advertises.

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• SSL Ajax type of certificate for the static domain (image + js)

  - by Alexl

  Hi, I have a page that is SSL and has a valid certificate extended. (mainpage.com) But this page request some static content to another domain(page-static.com), basicly images and js. Actually i have only a certificate for my mainpage.com. So now when i request this page i get invalid ssl page because it contains invalid encrypted data (the one provided by the www.page-static.com) What kind of certificate do i need for the www.page-static.com. Do i need the same one as the mainpage.com, because this certificate are expensive (it's a extended certificate). Or a cheap certificate from godaddy will do the trick. This is another question do both certificates have to be signed by the same root provider and/or the same encryption key length (or it can be only 128 bits)? Thanks for your help

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• Static Content Caching in Sticky Session ?

  - by Ravi

  can we do Static Content caching in Sticky Session Servers. We use SqlStateServer to store the Session of the user. right now we are doing performance tuning in our application, so we decided to cache the static Content(images, css, js) for the applicaiton. so that it loads faster. Is it Good to cache the static content in Sticky Session ? If it's good, then can any one give me some links where i can read about it. right now i done following settings in my web config file <staticContent> <clientCache cacheControlCustom="public" cacheControlMode="UseMaxAge" cacheControlMaxAge="500.00:00:00" /> </staticContent> can this is the good code ? will it not affect our sticky session environment ? my goal is to cache the static images, css, Js for the application

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• Nginx and Wordpress side-by-side with static directory alias?

  - by user117161

  I'm a Nginx novice, but I have it set up with Wordpress Multisite (subdirectories) and php-fpm, and it's working great as is. This lets me set up Wordpress sites off the web root: domain.com/site1 - a Wordpress network single site, which renders as expected. domain.com/site2 - ditto etc. Concurrently, I can easily create static files in the web root that don't conflict or interact with Wordpress, and they are also rendered normally. domain.com/hello.html - rendered normally domain.com/hello.php - rendered normally, including php processing domain.com/static/hello.php - rendered normally (along as "static" isn't a WP single site name) What I'd like to do, and this is where I'm out of my depth with nginx.conf, is create a root directory domain.com/static and put static sites in there domain.com/static/site3 domain.com/static/site4 and have Nginx check the request that comes into the root request comes in for: domain.com/site3 and before handing off to Wordpress, check to see if it exists in the /static folder checks: domain.com/static/site3 - static content exists there and if so, serves that content while maintaining the root URI. serves: domain.com/site3 (with content from domain.com/static/site3) if not, it lets Wordpress check if /site3 is a Wordpress single network site as it does now, and the process continues normally. In nginx.conf, in the server section, I start with this try_files rule: location / { try_files $uri $uri/ /index.php?q=$uri&$args; } I then include a bunch of Wordpress specific rules as identified at http://codex.wordpress.org/Nginx under the subdirectory section. I can see that rewrite rules might take care of it easily, but in my experimentation I've only achieved a bunch of looping (/static/static/static, etc.) and managed to bypass Wordpress if the looping stopped. Sorry if this is a very long-winded way of asking a simple question, but I'm definitely learning some of this stuff for the first time. Thanks!

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• "Warning reaching end of non-void fuction" with Multiple Sections that pull in multiple CustomCells

  - by Newbyman

  I'm getting "Reaching end of non-void function" warning, but don't have anything else to return for the compiler. How do I get around the warning?? I'm using customCells to display a table with 3 Sections. Each CustomCell is different, linked with another viewcontroller's tableview within the App, and is getting its data from its individual model. Everything works great in the Simulator and Devices, but I would like to get rid of the warning that I have. It is the only one I have, and it is pending me from uploading to App Store!! Within the - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {, I have used 3 separate If() statements-(i.e.==0,==1,==2) to control which customCells are displayed within each section throughout the tableview's cells. Each of the customCells were created in IB, pull there data from different models, and are used with other ViewController tableViews. At the end of the function, I don't have a "cell" or anything else to return, because I already specified which CustomCell to return within each of the If() statements. Because each of the CustomCells are referenced through the AppDelegate, I can not set up an empty cell at the start of the function and just set the empty cell equal to the desired CustomCell within each of the If() statements, as you can for text, labels, etc... My question is not a matter of fixing code within the If() statements, unless it is required. My Questions is in "How to remove the warning for reaching end of non-void function-(cellForRowAtIndexPath:) when I have already returned a value for every possible case: if(section == 0); if(section == 1); and if(section == 2). *Code-Reference: The actual file names were knocked down for simplicity, (section 0 refers to M's, section 1 refers to D's, and section 2 refers to B's). Here is a sample Layout of the code: //CELL FOR ROW AT INDEX PATH: -(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { //Reference to the AppDelegate: MyAppDelegate *appDelegate = (MyAppDelegate *)[[UIApplication sharedApplication] delegate]; //Section 0: if(indexPath.section == 0) { static NSString *CustomMCellIdentifier = @"CustomMCellIdentifier"; MCustomCell *mCell = (MCustomCell *)[tableView dequeueReusableCellWithIdentifier:CustomMCellIdentifier]; if (mCell == nil) { NSArray *nib = [[NSBundle mainBundle] loadNibNamed:@"MCustomCell" owner:tableView options:nil]; for (id oneObject in nib) if ([oneObject isKindOfClass:[MCustomCell class]]) mCell = (MCustomCell *)oneObject; } //Grab the Data for this item: M *mM = [appDelegate.mms objectAtIndex:indexPath.row]; //Set the Cell [mCell setM:mM]; mCell.selectionStyle =UITableViewCellSelectionStyleNone; mCell.root = tableView; return mCell; } //Section 1: if(indexPath.section == 1) { static NSString *CustomDCellIdentifier = @"CustomDCellIdentifier"; DCustomCell *dCell = (DCustomCell *)[tableView dequeueReusableCellWithIdentifier:CustomDaddyCellIdentifier]; if (dCell == nil) { NSArray *nib = [[NSBundle mainBundle] loadNibNamed:@"DCustomCell" owner:tableView options:nil]; for (id oneObject in nib) if ([oneObject isKindOfClass:[DCustomCell class]]) dCell = (DCustomCell *)oneObject; } //Grab the Data for this item: D *dD = [appDelegate.dds objectAtIndex:indexPath.row]; //Set the Cell [dCell setD:dD]; //Turns the Cell's SelectionStyle Blue Highlighting off, but still permits the code to run! dCell.selectionStyle =UITableViewCellSelectionStyleNone; dCell.root = tableView; return dCell; } //Section 2: if(indexPath.section == 2) { static NSString *CustomBCellIdentifier = @"CustomBCellIdentifier"; BCustomCell *bCell = (BCustomCell *)[tableView dequeueReusableCellWithIdentifier:CustomBCellIdentifier]; if (bCell == nil) { NSArray *nib = [[NSBundle mainBundle] loadNibNamed:@"BCustomCell" owner:tableView options:nil]; for (id oneObject in nib) if ([oneObject isKindOfClass:[BCustomCell class]]) bCell = (BCustomCell *)oneObject; } //Grab the Data for this item: B *bB = [appDelegate.bbs objectAtIndex:indexPath.row]; //Set the Cell [bCell setB:bB]; bCell.selectionStyle =UITableViewCellSelectionStyleNone; bCell.root = tableView; return bCell; } //** Getting Warning "Control reaches end of non-void function" //Not sure what else to "return ???" all CustomCells were specified within the If() statements above for their corresponding IndexPath.Sections. } Any Suggestions ??

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• C#.Net Calling a C++ DLL

  - by hayer

  Hi I got a DLL(without the sourcecode) which exports like this: ?ReceiveCoreDataPtr@@YAXPAX@Z ?xenoAddRigidBodyAngularImpulse@@YAXHMMM@Z ?xenoAddRigidBodyForce@@YAXHMMM@Z ?xenoAddRigidBodyForce@@YAXHMMMMMM@Z ?xenoAddRigidBodyLinearImpulse@@YAXHMMM@Z ?xenoAddRigidBodyPointImpulse@@YAXHMMMMMM@Z ?xenoAddRigidBodyTorque@@YAXHMMM@Z ?xenoCharacterControllerCrouch@@YAXH@Z ?xenoCharacterControllerJump@@YAXH@Z ?xenoCharacterDisable@@YAXH@Z ?xenoCharacterEnable@@YAXH@Z ?xenoDeleteRigidBody@@YAXH@Z ?xenoEnd@@YAXXZ ?xenoGetCameraFOV@@YAKH@Z ?xenoGetCameraPointX@@YAKH@Z ?xenoGetCameraPointY@@YAKH@Z ?xenoGetCameraPointZ@@YAKH@Z ?xenoGetCameraPositionX@@YAKH@Z ?xenoGetCameraPositionY@@YAKH@Z ?xenoGetCameraPositionZ@@YAKH@Z ?xenoGetCharacterControllerHeadPosition@@YAKH@Z ?xenoGetCharacterControllerPositionX@@YAKH@Z ?xenoGetCharacterControllerPositionY@@YAKH@Z ?xenoGetCharacterControllerPositionZ@@YAKH@Z ?xenoGetCharacterControllerRotation@@YAKH@Z ?xenoGetRigidBodyAllowedPenetrationDepth@@YAKH@Z ?xenoGetRigidBodyAngularDamping@@YAKH@Z ?xenoGetRigidBodyAngularVelocityX@@YAKH@Z ?xenoGetRigidBodyAngularVelocityY@@YAKH@Z ?xenoGetRigidBodyAngularVelocityZ@@YAKH@Z ?xenoGetRigidBodyFriction@@YAKH@Z ?xenoGetRigidBodyGravityFactor@@YAKH@Z ?xenoGetRigidBodyLinearDamping@@YAKH@Z ?xenoGetRigidBodyLinearVelocityX@@YAKH@Z ?xenoGetRigidBodyLinearVelocityY@@YAKH@Z ?xenoGetRigidBodyLinearVelocityZ@@YAKH@Z ?xenoGetRigidBodyMass@@YAKH@Z ?xenoGetRigidBodyMaxAngularVelocity@@YAKH@Z ?xenoGetRigidBodyMaxLinearVelocity@@YAKH@Z ?xenoGetRigidBodyPointVelocityX@@YAKHMMM@Z ?xenoGetRigidBodyPointVelocityY@@YAKHMMM@Z ?xenoGetRigidBodyPointVelocityZ@@YAKHMMM@Z ?xenoGetRigidBodyRestitution@@YAKH@Z ?xenoIsRigidBodyALadder@@YAHH@Z ?xenoMakeCamera@@YAXHH@Z ?xenoMakeCharacterController@@YAXHMM@Z ?xenoMakeCharacterController@@YAXHMMM@Z ?xenoMakeCharacterController@@YAXHMMMM@Z ?xenoMakeCharacterController@@YAXHMMMMM@Z ?xenoMakeCharacterController@@YAXHMMMMMM@Z ?xenoMakeCharacterController@@YAXHMMMMMMM@Z ?xenoMakeRigidBodyDynamicBox@@YAXH@Z ?xenoMakeRigidBodyDynamicBox@@YAXHM@Z ?xenoMakeRigidBodyDynamicCapsule@@YAXH@Z ?xenoMakeRigidBodyDynamicCapsule@@YAXHM@Z ?xenoMakeRigidBodyDynamicCylinder@@YAXH@Z ?xenoMakeRigidBodyDynamicCylinder@@YAXHM@Z ?xenoMakeRigidBodyDynamicSphere@@YAXH@Z ?xenoMakeRigidBodyDynamicSphere@@YAXHM@Z ?xenoMakeRigidBodyStaticBox@@YAXH@Z ?xenoMakeRigidBodyStaticCapsule@@YAXH@Z ?xenoMakeRigidBodyStaticCylinder@@YAXH@Z ?xenoMakeRigidBodyStaticSphere@@YAXH@Z ?xenoMakeRigidBodyStaticTriangleMesh@@YAXH@Z ?xenoMakeVehicle@@YAXHH@Z ?xenoMoveCharacterControllerBackward@@YAXH@Z ?xenoMoveCharacterControllerForward@@YAXH@Z ?xenoMoveCharacterControllerLeft@@YAXH@Z ?xenoMoveCharacterControllerRight@@YAXH@Z ?xenoSetCharacterControllerPosition@@YAXHMMM@Z ?xenoSetCharacterControllerRotation@@YAXHM@Z ?xenoSetGravity@@YAXM@Z ?xenoSetGravity@@YAXMMM@Z ?xenoSetRigidBodyAllowedPenetrationDepth@@YAXHM@Z ?xenoSetRigidBodyAngularDamping@@YAXHM@Z ?xenoSetRigidBodyAngularVelocity@@YAXHMMM@Z ?xenoSetRigidBodyAsLadder@@YAXHH@Z ?xenoSetRigidBodyFriction@@YAXHM@Z ?xenoSetRigidBodyGravityFactor@@YAXHM@Z ?xenoSetRigidBodyLinearDamping@@YAXHM@Z ?xenoSetRigidBodyLinearVelocity@@YAXHMMM@Z ?xenoSetRigidBodyMass@@YAXHM@Z ?xenoSetRigidBodyMaxAngularVelocity@@YAXHM@Z ?xenoSetRigidBodyMaxLinearVelocity@@YAXHM@Z ?xenoSetRigidBodyPosition@@YAXHMMM@Z ?xenoSetRigidBodyRestitution@@YAXHM@Z ?xenoSetRigidBodyRotation@@YAXHMMM@Z ?xenoSetTimeStep@@YAXM@Z ?xenoStart@@YAXH@Z ?xenoStart@@YAXHM@Z ?xenoStart@@YAXHMH@Z ?xenoStart@@YAXXZ ?xenoUpdate@@YAXXZ ?xenoVehicleAccelerate@@YAXHM@Z ?xenoVehicleHandbrake@@YAXH@Z ?xenoVehicleReverse@@YAXH@Z ?xenoVehicleTurn@@YAXHM@Z When I try to use it in another C++ App like this #include <windows.h> class XenoPhysics { private: typedef void (*FunctionFunc)(void); typedef void (*FunctionFuncFloat)(float); typedef void (*FunctionFuncInt)(int); typedef void (*FunctionIntFloatFloatFloat)(int,float,float,float); HMODULE libInstance; public: void LoadLib() { this->libInstance = LoadLibrary(L"F:\\xenophysics.dll"); } void UnloadLib() { FreeLibrary(libInstance); } void xStart() { FunctionFunc curFunc; curFunc = (FunctionFunc)GetProcAddress(this->libInstance, "?xenoStart@@YAXXZ"); curFunc(); } void xEnd() { FunctionFunc curFunc; curFunc = (FunctionFunc)GetProcAddress(libInstance, "xenoEnd"); curFunc(); } void xUpdate() { FunctionFunc curFunc; curFunc = (FunctionFunc)GetProcAddress(libInstance, "xenoUpdate"); curFunc(); } void xMakeRigidBodyStaticBox(int objid) { FunctionFuncInt curFunc; curFunc = (FunctionFuncInt)GetProcAddress(libInstance, "xenoMakeRigidBodyStaticBox"); curFunc(objid); } void xMakeRigidBodyDynamicBox(int objid) { FunctionFuncInt curFunc; curFunc = (FunctionFuncInt)GetProcAddress(libInstance, "xenoMakeRigidBodyDynamicBox"); curFunc(objid); } void xSetRigidBodyPosition(int objid, float x, float y, float z) { FunctionIntFloatFloatFloat curFunc; curFunc = (FunctionIntFloatFloatFloat)GetProcAddress(libInstance, "xenoSetRigidBodyPosition"); curFunc(objid, x, y, z); } void xSetGravity(float grav) { FunctionFuncFloat curFunc; curFunc = (FunctionFuncFloat)GetProcAddress(libInstance, "xenoSetGravity"); curFunc(grav); } }; This is the "wrapper"(or whatever you would call it) class.. To call the functions I'm doing XenoPhysics * d = new XenoPhysics(); d->LoadLib(); d->xStart(); It then throws the following error at me(Note that it passes the LoadLib() without any errors) Unhandled exception at 0x50261bc9 in Xeno Test.exe: 0xC0000005: Access violation reading location 0x00000064. And yes; I've checked that the "curFunc" gets the address, not just a NULL pointer(atleast I think I've checked that).. Anyone who can help out? Edit: Forgot the C#.Net code, how stupid of me :3 Here is the C++ CLR DLL "wrapper" I tried to make: #include <windows.h> // The following ifdef block is the standard way of creating macros which make exporting // from a DLL simpler. All files within this DLL are compiled with the XENOWRAPPERWIN32_EXPORTS // symbol defined on the command line. this symbol should not be defined on any project // that uses this DLL. This way any other project whose source files include this file see // XENOWRAPPERWIN32_API functions as being imported from a DLL, whereas this DLL sees symbols // defined with this macro as being exported. #ifdef XENOWRAPPERWIN32_EXPORTS #define XENOWRAPPERWIN32_API __declspec(dllexport) #else #define XENOWRAPPERWIN32_API __declspec(dllimport) #endif typedef void (*FunctionFunc)(); typedef void (*FunctionFuncFloat)(float); typedef void (*FunctionFuncInt)(int); typedef void (*FunctionIntFloatFloatFloat)(int,float,float,float); // This class is exported from the xeno wrapper win32.dll class XENOWRAPPERWIN32_API Cxenowrapperwin32 { public: Cxenowrapperwin32(void); HINSTANCE libInstance; // FunctionFunc curFunc; // Library base functions void LoadLib() { libInstance = LoadLibrary(L"F:\\xenophysics.dll"); } void UnloadLib() { FreeLibrary(libInstance); } // Function calls to the xeno physics void xStart() { FunctionFunc curFunc; curFunc = (FunctionFunc)GetProcAddress(libInstance, "?xenoStart@@YAXXZ"); curFunc(); } void xEnd() { FunctionFunc curFunc; curFunc = (FunctionFunc)GetProcAddress(libInstance, "?xenoEnd@@YAXXZ"); curFunc(); } void xUpdate() { FunctionFunc curFunc; curFunc = (FunctionFunc)GetProcAddress(libInstance, "?xenoUpdate@@YAXXZ"); curFunc(); } void xMakeRigidBodyStaticBox(int objid) { FunctionFuncInt curFunc; curFunc = (FunctionFuncInt)GetProcAddress(libInstance, "?xenoMakeRigidBodyStaticBox@@YAXH@Z"); curFunc(objid); } void xMakeRigidBodyDynamicBox(int objid) { FunctionFuncInt curFunc; curFunc = (FunctionFuncInt)GetProcAddress(libInstance, "?xenoMakeRigidBodyDynamicBox@@YAXH@Z"); curFunc(objid); } void xSetRigidBodyPosition(int objid, float x, float y, float z) { FunctionIntFloatFloatFloat curFunc; curFunc = (FunctionIntFloatFloatFloat)GetProcAddress(libInstance, "?xenoSetRigidBodyPosition@@YAXHMMM@Z"); curFunc(objid, x, y, z); } void xSetGravity(float grav) { FunctionFuncFloat curFunc; curFunc = (FunctionFuncFloat)GetProcAddress(libInstance, "?xenoSetGravity@@YAXM@Z"); curFunc(grav); } }; extern XENOWRAPPERWIN32_API int nxenowrapperwin32; XENOWRAPPERWIN32_API int fnxenowrapperwin32(void); and here is how I use it in C#.Net class xeno { [DllImport("C:\\Users\\hayer\\Documents\\Visual Studio 2008\\Projects\\xeno wrapper win32\\Debug\\xeno wrapper win32.dll", EntryPoint = "?LoadLib@Cxenowrapperwin32@@QAEXXZ")] public static extern void xLoadLib(); public void LoadLib() { xLoadLib(); } [DllImport("C:\\Users\\hayer\\Documents\\Visual Studio 2008\\Projects\\xeno wrapper win32\\Debug\\xeno wrapper win32.dll", EntryPoint = "?UnloadLib@Cxenowrapperwin32@@QAEXXZ")] public static extern void xUnloadLib(); public void UnloadLib() { xUnloadLib(); } [DllImport("C:\\Users\\hayer\\Documents\\Visual Studio 2008\\Projects\\xeno wrapper win32\\Debug\\xeno wrapper win32.dll", EntryPoint = "?xStart@Cxenowrapperwin32@@QAEXXZ")] public static extern void xStart(); public void Start() { xStart(); } [DllImport("C:\\Users\\hayer\\Documents\\Visual Studio 2008\\Projects\\xeno wrapper win32\\Debug\\xeno wrapper win32.dll", EntryPoint = "?xUpdate@Cxenowrapperwin32@@QAEXXZ")] public static extern void xUpdate(); public void Update() { xUpdate(); } [DllImport("C:\\Users\\hayer\\Documents\\Visual Studio 2008\\Projects\\xeno wrapper win32\\Debug\\xeno wrapper win32.dll", EntryPoint = "?xEnd@Cxenowrapperwin32@@QAEXXZ")] public static extern void xEnd(); public void End() { xEnd(); } [DllImport("C:\\Users\\hayer\\Documents\\Visual Studio 2008\\Projects\\xeno wrapper win32\\Debug\\xeno wrapper win32.dll", EntryPoint = "?xMakeRigidBodyDynamicBox@Cxenowrapperwin32@@QAEXH@Z")] public static extern void xMakeRigidBodyDynamicBox(int objid); public void MakeRigidBodyDynamicBox(int id) { xMakeRigidBodyDynamicBox(id); } [DllImport("C:\\Users\\hayer\\Documents\\Visual Studio 2008\\Projects\\xeno wrapper win32\\Debug\\xeno wrapper win32.dll", EntryPoint = "?xMakeRigidBodyStaticBox@Cxenowrapperwin32@@QAEXH@Z")] public static extern void xMakeRigidBodyStaticBox(int objid); public void MakeRigidBodyStaticBox(int id) { xMakeRigidBodyStaticBox(id); } [DllImport("C:\\Users\\hayer\\Documents\\Visual Studio 2008\\Projects\\xeno wrapper win32\\Debug\\xeno wrapper win32.dll", EntryPoint = "?xSetGravity@Cxenowrapperwin32@@QAEXM@Z")] public static extern void xSetGravity(float grav); public void SetGravity(float g) { xSetGravity(g); } [DllImport("C:\\Users\\hayer\\Documents\\Visual Studio 2008\\Projects\\xeno wrapper win32\\Debug\\xeno wrapper win32.dll", EntryPoint = "?xSetRigidBodyPosition@Cxenowrapperwin32@@QAEXHMMM@Z")] public static extern void xSetRigidBodyPosition(int obj, float x, float y, float z); public void SetRigidBodyPosition(int id, float q, float w, float e) { xSetRigidBodyPosition(id, q, w, e); } } And in the main C#.Net program I do xeno tx = new xeno(); tx.Start(); tx.SetGravity(-1); tx.MakeRigidBodyStaticBox(ground.Id); tx.MakeRigidBodyDynamicBox(cube.Id); tx.SetRigidBodyPosition(cube.Id, 0, 50, 0);

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• Private constructor and public parameter constructor -C#

  - by Amutha

  I heard that private constructor prevent object creation from outside world. When i have a code public class Product { public string Name { get;set;} public double Price {get;set;} Product() { } public Product(string _name,double _price) { } } here still i can declare public constructor(parameter),won't it spoil the purpose of private constructor? When do we need both private and public constructor(parameter) in code? I need detailed explanation please.

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• iPhone SDK - (void)viewDidLoad { } - Show Progress

  - by Hank Brekke

  I have a long - (void)viewDidLoad { } function that uses the internet to load a page, and whenever the application loads the URL, the screen is black. I have a UIActivityIndicator setup to show that the address is loading, but I don't know how to prevent it from seeming as if the application is not responding, and I don't want to show the network activity indicator [[UIApplication sharedApplication] setNetworkActivityIndicatorVisible:YES]; because the screen will still be black, just with a loader in the top corner. My code is below: - (void)viewDidLoad { NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults]; email.text = [defaults objectForKey:@"mom_email"]; pass.text = [defaults objectForKey:@"mom_pass"]; if (email.text != nil && pass.text != nil) { [self login:loginBtn]; } } - (IBAction)login:(id)sender { [email resignFirstResponder]; [pass resignFirstResponder]; [loader startAnimating]; // Does nothing though NSString *em = (NSString *)CFURLCreateStringByAddingPercentEscapes(NULL,(CFStringRef)email.text,NULL,(CFStringRef)@"!*'();:@&=+$,/?%#[]",kCFStringEncodingUTF8); NSString *ps = (NSString *)CFURLCreateStringByAddingPercentEscapes(NULL,(CFStringRef)pass.text,NULL,(CFStringRef)@"!*'();:@&=+$,/?%#[]",kCFStringEncodingUTF8); NSURL *url = [[NSURL alloc] initWithScheme:@"http" host:@"localhost" path:[[NSString alloc] initWithFormat:@"/app/login.php?email=%@&pass=%@", em, ps]]; NSURLRequest *request = [NSURLRequest requestWithURL:url]; NSData *data = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil]; NSString *loginResult = [[NSString alloc] initWithData:data encoding:NSASCIIStringEncoding]; [loader stopAnimating]; NSRange range = [loginResult rangeOfString:@"1"]; if (range.location != NSNotFound) { [self dismissModalViewControllerAnimated:YES]; // Doesn't do anything if function called from viewDidLoad } }

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• - (void)keyboardWasShown not called when switching to another UITextField

  - by Shawn

  I'm having a strange problem that I don't understand. I have a UIScrollView with several UITextField objects. When I switch to the view, I set the first UITextField as firstresponder, and the keyboardWasShown method gets called due to the UIKeyboardDidShowNotification that the view is registered for. The weird thing is, when I touch the next UITextField, the keyboardWasShown method is not called. I don't understand this, since Apple's documentation says "If your interface has multiple text fields, the user can tap between them to edit the values in each one. When that happens, however, the keyboard does not disappear but the system does still generate UIKeyboardDidShowNotification notifications each time editing begins in a new text field." My code I've copied directly from Apple's documentation as well, and it works properly, but it only gets called the first time. What am I missing? - (void)registerForKeyboardNotifications { [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWasShown:) name:UIKeyboardDidShowNotification object:nil]; [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWasHidden:) name:UIKeyboardDidHideNotification object:nil]; } - (void)keyboardWasShown:(NSNotification *)aNotification { //if (keyboardShown) return; NSDictionary* info = [aNotification userInfo]; CGSize kbSize = [[info objectForKey:UIKeyboardBoundsUserInfoKey] CGRectValue].size; CGRect bkgndRect = activeField.superview.frame; bkgndRect.size.height += kbSize.height; [activeField.superview setFrame:bkgndRect]; [scrollView setContentOffset:CGPointMake(0.0, activeField.frame.origin.y) animated:YES]; keyboardShown = YES; UIBarButtonItem *doneButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:@selector(done)]; self.navigationItem.rightBarButtonItem = doneButton; [doneButton release]; }

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• Are local variables in Fortran 77 static or stack dynamic?

  - by mm2887

  For my programming languages class one hw problem asks: Are local variables in FORTRAN static or stack dynamic? Are local variables that are INITIALIZED to a default value static or stack dynamic? Show me some code with an explanation to back up your answer. Hint: The easiest way to check this is to have your program test the history sensitivity of a subprogram. Look at what happens when you initialize the local variable to a value and when you don’t. You may need to call more than one subprogram to lock in your answer with confidence. I wrote a few subroutines: - create a variable - print the variable - initialize the variable to a value - print the variable again Each successive call to the subroutine prints out the same random value for the variable when it is uninitialized and then it prints out the initialized value. What is this random value when the variable is uninitialized? Does this mean Fortran uses the same memory location for each call to the subroutine or it dynamically creates space and initializes the variable randomly? My second subroutine also creates a variable, but then calls the first subroutine. The result is the same except the random number printed of the uninitialized variable is different. I am very confused. Please help! Thank you so much.

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• How can we expose a .NET public const to COM interop

  - by JulienC

  For historical reasons, we need to expose string constants in .NET through COM interface. We managed to expose ENUM but we can't find a way to expose string const. We try the following code : <ComClass(ComClass1.ClassId, ComClass1.InterfaceId, ComClass1.EventsId)> _ Public Class ComClass1 #Region "COM GUIDs" ' These GUIDs provide the COM identity for this class ' and its COM interfaces. If you change them, existing ' clients will no longer be able to access the class. Public Const ClassId As String = "608c6545-977e-4260-a3cf-11545c82906a" Public Const InterfaceId As String = "12b8a6c7-e7f6-4022-becd-2efd8b3a756e" Public Const EventsId As String = "05a2856f-d877-4673-8ea8-20f5a9f268d5" #End Region ' A creatable COM class must have a Public Sub New() ' with no parameters, otherwise, the class will not be ' registered in the COM registry and cannot be created ' via CreateObject. Public Sub New() MyBase.New() End Sub Public Const chaine As String = "TEST" Public Sub Method() End Sub End Class But when we look on the OLE object viewer, we only see the method. See ScreenShot: screenshot of OLE viewer Anyone have an idea ? Thanks,

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• Wanted to know in detail about how shared libraries work vis-a-vis static library.

  - by goldenmean

  Hello, I am working on creating and linking shared library (.so). While working with them, many questions popped up which i could not find satisying answers when i searched for them, hence putting them here. The questions about shared libraries i have are: 1.) How is shared library different than static library? What are the Key differences in way they are created, they execute? 2.) In case of a shared library at what point are the addresses where a particular function in shared library will be loaded and run from, given? Who gives those functions is load/run addresses? 3.) Will an application linked against shared library be slower in execution as compared to that which is linked with a static library? 4.) Will application executable size differ in these two cases? 5.) Can one do source level debugging of by stepping into functions defined inside a shared library? Is any thing extra needed to make these functions visible to the application? 6.) What are pros and cons in using either kind of library? Thanks. -AD

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• How do I iterate through the id properties of R.java in android?

  - by mgpyone

  I've 16 textViews and need to set something like this done: for (int i=1; i<6; i++) { int $RidInt = R.id.s; tv[i] = (TextView)findViewById($RidInt); tv[i].setTypeface(face); tv[i].setClickable(true); tv[i].setOnClickListener(clickListener); } my R.java file is : public final class R { public static final class attr { } public static final class drawable { public static final int icon=0x7f020000; } public static final class id { public static final int s1=0x7f050000; public static final int s10=0x7f050009; public static final int s11=0x7f05000a; public static final int s12=0x7f05000b; public static final int s13=0x7f05000c; public static final int s14=0x7f05000d; public static final int s15=0x7f05000e; public static final int s16=0x7f05000f; public static final int s2=0x7f050001; public static final int s3=0x7f050002; public static final int s4=0x7f050003; public static final int s5=0x7f050004; public static final int s6=0x7f050005; public static final int s7=0x7f050006; public static final int s8=0x7f050007; public static final int s9=0x7f050008; } public static final class layout { public static final int main=0x7f030000; public static final int toast=0x7f030001; } public static final class string { public static final int app_name=0x7f040000; public static final int s2=0x7f040001; } }

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