Using of CFDictionaryGetValueIfPresent

CFDictionaryGetValueIfPresent_Sample.c

CFDictionaryRef dict;
/*
Get some dictionary...
*/	
          
SInt32 intVal = 0;
CFNumberRef cfIntVal;

char* strVal;
CFStringRef cfStrVal;

if(CFDictionaryGetValueIfPresent(dict, CFSTR("SomeKey0"), &cfIntVal) &&
    CFDictionaryGetValueIfPresent(dict, CFSTR("SomeKey1"), &cfStrVal)
{
    CFNumberGetValue(cfIntVal, kCFNumberSInt32Type, &intVal);
    
    CFStringEncoding encodingMethod = CFStringGetSystemEncoding();
    strVal = CFStringGetCStringPtr(cfStrVal, encodingMethod); 
}