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Suppose I write my code very defensively and always check the return types from all the functions that I call. So I go like: char* function() { char* mem = get_memory(100); // first allocation if (!mem) return NULL; struct binder* b = get_binder('regular binder'); // second allocation if (!b) { free(mem); ...
I am using a variable-sized C struct, as follows: typedef struct { int num_elems; int elem1; } mystruct; // say I have 5 elements I would like to hold. mystruct * ms = malloc(sizeof(mystruct) + (5-1) * sizeof(int)); ms->num_elems = 5; // ... assign 5 elems and use struct free(ms); Will this last free() free every...
Hello everyone - my first question on Stackoverflow. Let me start with a bit of code. It's a bit repetitive so I'm going to cut out the parts I repeat for different arrays (feel free to ask for the others). However, please ignore the code in preference to answering the Qs at the bottom. Firstly: thank you to answerers in advance. Se...
Hi, I am creating a very big buffer (called buffer2 in the code) using CGDataProviderRef with the following code: -(UIImage *) glToUIImage { NSInteger myDataLength = 768 * 1024 * 4; // allocate array and read pixels into it. GLubyte *buffer = (GLubyte *) malloc(myDataLength); glReadPixels(0, 0, 768, 1024, GL_RGBA, GL_UNSIGNED_BYTE,...
What weather services have free APIs for commercial use? Out of the handful or so, which ones are easiest to tie into? Do they use "raw" HTTP requests or web services? Are there wrapper APIs for Java, .NET, Python, etc. Which have you had the best experience with? --update I would like something for South America ;) --Related http://...
Possible Duplicate: Setting variable to NULL after free I am learning about good C programming practices and my friend told me to always set the pointers to NULL after free()ing them (or calling a specific freeing function). For example: char* ptr = malloc(100); ... free(ptr); ptr = NULL; or struct graph* graph = create_...
Is there any working OCR library for JAVA. It can call widows .dll - I don't mind it. I'm trying to overcome one easy captcha. Asprise OCR works sometimes, but mostly it misses one or two characters ...
Specifically, how are free variables bound at definition for methods of a class? It is probably something like this: enclosing function (temporary) scope => generate closure global (permanent) scope => generate no closure (just look it up when the method body executes) raise UnboundLocalError() Here are two examples: globalname = 0...
Normally, if a pointer is freed twice, it's a double free. For example, char *ptr; ptr=malloc(5 * sizeof(*ptr)); free(ptr); free(ptr); The above code is considered as double free. Is the following considered as double free as well? char *ptr; char *ptr1; ptr=malloc(5 * sizeof(*ptr)); ptr1=ptr; free(ptr); free(ptr1); Thank you. ...
i need to add as part of CMS application some kind of Javascript HTML WYSIWYG editor somekind of TineMC kind of thing but its needs to be license free no GPL or LGPL kind of license this is because i have to modify it and i can't open source the application. i dont need it to be full of options like TineMC. Any ideas? ...
I have a struct struct request { int code; char *message; }; that I'd like to free properly. I have the following function to do that: void free_request(struct request *req) { if (req->message != NULL) { free(req->message); } free(req); req = NULL; } The problem is that I get an "free(): invalid pointer"/segfaul...
I have a friend who wants to learn C++, but does not want to pay. I found Cplusplus tutorial, but I was wondering if there was any other material available for free. I've had a look at Thinking In C++, but I feel it may be a bit advanced (totally new person). Thanks. ...
Hello all i need to embed text-to-speech into my application with human void not robotic i found about festival lib that seams good the only problem is after reading the docs im not sure if its working on windows or not ? did someone manage to compile the lib on windows without sygwin ...
Hi, I made an object that actually represents an array of 8 booleans stored in a char. I made it to learn something more about bitwise operators and about creating your own objects in C. So I've got two questions: Can I be certain if the below code always works? Is this a good implementation to make an object that can't get lost in C, ...
Are there any open source or free wire framing tools available? I tried Pencil, but are there any better ones? mockingbird.com was awesome, but it's paid now from Aug 15th. So, any other alternatives? Thanks ...
Here in Brazil we have a program called CoolSMS, that send free SMS to all the big operators that have here on our teritory, but even for VIVO(that we need to pay R$0.26 for every email-to-sms) it goes for free. Then I want to know how to do this programatically. Don't matter the language, but I prefer Java. ...
Hi, Does anyone know any free tools that will generate insert statements given a result set? I know TOAD for Oracle does it, i would need this for a mysql database. For example, if I execute this query select colA, colB from mytable where colC = 'numbers'; //returns many rows |colA | colB | |1 | 'one' | |2 | 'two' | |3 | '...
Possible Duplicate: C programming : How does free know how much to free? Hello All, How OS will come to know how much size i have to free when we define free(pointer). I mean we are not providing any size , only pointer to free statement. How's internally handle the size ? Thanks, Neel ...
Is there a free official Delphi 2010 compiler available for download? I have visited embarcadero's website but only see versions that cost $1500+. ...