New inquire of the OC code memory leak?-CodePudding

 - (nsstrings *) getRandomWord: (int) count {
Int nextNum=1; 
NSStringEncoding gbkEncoding=CFStringConvertEncodingToNSStringEncoding (kCFStringEncodingGB_18030_2000); 
Init nsstrings * result=[[nsstrings alloc]]. 

for (int i=0; I & lt; The count. I++) {
@ autoreleasepool {
//[random number between 0 and 100) 
NextNum=arc4random () % 100; 
If (nextNum % 4==0) {
Int heightPos=176 + arc4random () % 39; 
Int lowPos=161 + arc4random () % 93; 
Byte wordBytes [2]={(Byte) heightPos, (Byte) lowPos}; 
Nsstrings * oneWord=[[nsstrings alloc] initWithBytes: wordBytes length: 2 encoding: gbkEncoding]; 
Result=[result stringByAppendingString: oneWord]; 
} else if (nextNum % 4==1) {
Char c=65 + arc4random () % 26; 
Result=[result stringByAppendingFormat: @ "% c", c]; 
} else if (nextNum % 4==2) {
Char c=97 + arc4random () % 26; 
Result=[result stringByAppendingFormat: @ "% c", c]; 
} else {
Int num=1 + arc4random () % 10; 
Result=[result stringByAppendingFormat: @ "% d", num]; 
} 
} 
} 

return result; 
}

CodePudding user response:

The

refer to the original poster libolf response:

 - (nsstrings *) getRandomWord: (int) count {
Int nextNum=1; 
NSStringEncoding gbkEncoding=CFStringConvertEncodingToNSStringEncoding (kCFStringEncodingGB_18030_2000); 
Init nsstrings * result=[[nsstrings alloc]]. 

for (int i=0; I & lt; The count. I++) {
@ autoreleasepool {
//[random number between 0 and 100) 
NextNum=arc4random () % 100; 
If (nextNum % 4==0) {
Int heightPos=176 + arc4random () % 39; 
Int lowPos=161 + arc4random () % 93; 
Byte wordBytes [2]={(Byte) heightPos, (Byte) lowPos}; 
Nsstrings * oneWord=[[nsstrings alloc] initWithBytes: wordBytes length: 2 encoding: gbkEncoding]; 
Result=[result stringByAppendingString: oneWord]; 
} else if (nextNum % 4==1) {
Char c=65 + arc4random () % 26; 
Result=[result stringByAppendingFormat: @ "% c", c]; 
} else if (nextNum % 4==2) {
Char c=97 + arc4random () % 26; 
Result=[result stringByAppendingFormat: @ "% c", c]; 
} else {
Int num=1 + arc4random () % 10; 
Result=[result stringByAppendingFormat: @ "% d", num]; 
} 
} 
} 

return result; 
}

Do not know to have, but CFStringConvertEncodingToNSStringEncoding this function are CoreFunction framework, this framework no memory automatic recovery mechanism

CodePudding user response:

Have no memory leaks human flesh was ugly, with xcode analysis tool to check to know
Xcode - product - Profile - Leak

CodePudding user response:

No memory leak under the ARC because nsstrings object types can be automatically released and the distribution of memory Byte array in the stack, out of the scope of {} returned to be recycled