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Where are an UIWebView's cookies stored?
...NSString *)msgOrNil {
NSMutableString *cookieDescs = [[[NSMutableString alloc] init] autorelease];
NSHTTPCookie *cookie;
NSHTTPCookieStorage *cookieJar = [NSHTTPCookieStorage sharedHTTPCookieStorage];
for (cookie in [cookieJar cookies]) {
[cookieDescs appendString:[self cookieDescription:cook...
How different is Objective-C from C++? [closed]
...e-C doesn't allow objects to be created on the stack - all objects must be allocated from the heap (either explicitly with an alloc message, or implicitly in an appropriate factory method).
Like C++, Objective-C has both structs and classes. However, where in C++ they are treated as almost exactly t...
What do 'statically linked' and 'dynamically linked' mean?
...hared libs), for GNU/Linux 2.6.26, BuildID[sha1]=0xf715572611a8b04f686809d90d1c0d75c6028f0f, not stripped"
Instead let us statically link the program this time:
gcc simpleprog.c -static -o simpleprog
Running file on this statically linked binary will show:
file simpleprog
"simpleprog: ELF 64...
What does the explicit keyword mean?
...se, you have a class String:
class String {
public:
String(int n); // allocate n bytes to the String object
String(const char *p); // initializes object with char *p
};
Now, if you try:
String mystring = 'x';
The character 'x' will be implicitly converted to int and then the String(int...
How do I increase the RAM and set up host-only networking in Vagrant?
...e.
config.vm.provider "virtualbox" do |vb|
vb.memory = "4096"
end
This allocates about 4GB of RAM to your VM. You can change this according to your requirement. For example, following setting would allocate 2GB of RAM to your VM.
config.vm.provider "virtualbox" do |vb|
vb.memory = "2048"
end
...
Best practices for in-app database migration for Sqlite
...ng stringWithFormat:@"userdata.sqlite"];
_database = [[FMDatabase alloc] initWithPath:[documentsDir stringByAppendingPathComponent:databaseName]];
_database.logsErrors = YES;
if (![_database openWithFlags:SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE | SQLITE_OPEN_FILEPROTECTI...
Spark java.lang.OutOfMemoryError: Java heap space
...
I suffered from this issue a lot when using dynamic resource allocation. I had thought it would utilize my cluster resources to best fit the application.
But the truth is the dynamic resource allocation doesn't set the driver memory and keeps it to its default value, which is 1G.
I res...
Virtual functions and performance - C++
...s 1st level cache with more memory than my first computer had? Not at all. Allocating memory from main RAM will cost you more time than if all your functions were virtual.
Its like the old, old days where people said structured programming was slow because all the code was split into functions, eac...
Reading a string with scanf
...ld take it then that this would not be the case with a pointer to a string allocated through malloc()?
– abeln
Mar 23 '11 at 15:04
4
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How to free memory in Java?
...
Java uses managed memory, so the only way you can allocate memory is by using the new operator, and the only way you can deallocate memory is by relying on the garbage collector.
This memory management whitepaper (PDF) may help explain what's going on.
You can also call Sy...