I have to write the methods as C Function so as to access the object every time, I want to declare that object inside the function and allocate it. How can I maintain a common object in all C Functions. Is it Possible?
void method1
{
NSMutableArray *sample = [[NSMutableArray alloc]init];
}
void method2
{
NSMutableArray *sample = [[NSMutableArray alloc]init];
}
I believe this should work (although this is definitely not thread-safe):
NSMutableArray *sample = nil;
void method1 {
if (sample == nil) {
setupSample();
}
// ...
}
void method2 {
if (sample == nil) {
setupSample();
}
// ...
}
void setupSample {
sample = [[NSMutableArray alloc] init];
// Any other setup here
}
static NSMutableArray *sampleArray=nil;
@implementation class
void method1(void){
if (sampleArray == nil){
sampleArray = [[NSMutableArray alloc]init];
}
}
void method2(void){
if (sampleArray == nil){
sampleArray = [[NSMutableArray alloc]init];
}
}
kindly use this
You may want to use class methods to access a shared object.
something like...
void method {
NSMutableArray *mySharedObj = [SampleRelatedContextClass sample];
}
This just looks better.
Create static file-scoped variable.
static NSMutableArray *sample=nil;
@implementation class
void method1(){ //you can write c functions outside @implementation also
if (sample==nil) {
sample = [[NSMutableArray alloc]init];
}
}
void method2(){
if (sample==nil) {
sample = [[NSMutableArray alloc]init];
}
}
@end
NOTE: You can not use objective-c instance variable in c functions
extern'd into other source files, basically.