Spark Streaming : Word Count Example
Spark Streaming makes it easy to build scalable fault-tolerant streaming applications. Spark Stream API is a near real time streaming it supports Java, Scala, Python and R....
Beginner's Hadoop
Convert Image to Base64 string in iOS
Swift
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//create image instance //with image name from bundle var image : UIImage = UIImage(named:"imageNameHere") var imageData = UIImagePNGRepresentation(image) //OR with path var url:NSURL = NSURL.URLWithString("urlHere") var imageData:NSData = NSData.dataWithContentsOfURL(url, options: nil, error: nil) |
Encoding
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let base64String = imageData.base64EncodedStringWithOptions(NSDataBase64EncodingOptions.fromRaw(0)!) println(base64String) |
Decoding
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let decodedData = NSData(base64EncodedString: base64String, options: NSDataBase64DecodingOptions.fromRaw(0)!) var decodedimage = UIImage(data: decodedData) println(decodedimage) yourImageView.image = decodedimage as UIImage |
iOS7 > Objectice-C version You can use NSData’s base64EncodedStringWithOptions Now encode as:
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- (NSString *)encodeToBase64String:(UIImage *)image { return [UIImagePNGRepresentation(image) base64EncodedStringWithOptions:NSDataBase64Encoding64CharacterLineLength]; } |
Decode as:
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- (UIImage *)decodeBase64ToImage:(NSString *)strEncodeData { NSData *data = [[NSData alloc]initWithBase64EncodedString:strEncodeData options:NSDataBase64DecodingIgnoreUnknownCharacters]; return [UIImage imageWithData:data]; } |
Network Streaming in Spark
Network streaming in spark is another interesting topic, here I am going to explain how network streaming works and will provide complete spark scala code. Before jumping to the code, I...
