Essential Books

Logging by Appending to a File

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NSLog is good, but you can also log by appending to a file instead, using code like: 

NSFileHandle* fh = [NSFileHandle fileHandleForWritingAtPath:path];
if ( !fh ) {
    [[NSFileManager defaultManager] createFileAtPath:path contents:nil attributes:nil];
    fh = [NSFileHandle fileHandleForWritingAtPath:path];
}
if ( fh ) {
    @try {
        [fh seekToEndOfFile];
        [fh writeData:[self dataUsingEncoding:enc]];
    }
    @catch (...) {
    }
    [fh closeFile];
}
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Logging:
* Logging
* Logging
* NSLog Output Format
* Logging Variable Values
* Removing Log Statements from Release Builds
* Empty message is not printed
* Using FUNCTION
* NSLog vs printf
* Logging NSLog meta data
* NSLog and BOOL type
* Logging by Appending to a File
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