as casts are fundamentally different from From conversions. From conversions are “simple and safe” whereas as casts are purely “safe”. When considering numeric types, From conversions exist only when the output is guaranteed to be the same, i.e. there is no loss of information (no truncation or flooring or loss of precision). as casts, however, … Read more
Because the number can be up to 15 digits, you’ll need to cast to an 64 bit (8-byte) integer. Try this: SELECT * FROM table WHERE myint = mytext::int8 The :: cast operator is historical but convenient. Postgres also conforms to the SQL standard syntax myint = cast ( mytext as int8) If you have … Read more
I think part of the problem you’re hitting is that jQuery.ajax does not natively support XHR2 blob/arraybuffer types which can nicely handle binary data (see Reading binary files using jQuery.ajax). If you use a native XHR object with xhr.responseType=”arraybuffer”, then read the response array and convert it to Base64, you’ll get what you want. Here’s a … Read more
Pavel has it quite right, I’d just like to explain a little. Presuming that you mean a performance impact as compared to floating point, or fixed-point-offset integer (i.e. storing thousandsths of a cent as an integer): Yes, there is very much a performance impact. PostgreSQL, and by the sounds of things MySQL, store DECIMAL / … Read more
a – b isn’t just a.__sub__(b). It also tries b.__rsub__(a) if a can’t handle the operation, and in the 1 – 2. case, it’s the float’s __rsub__ that handles the operation. >>> (2.).__rsub__(1) -1.0 You ran a.__rsub__(2.), but that’s the wrong __rsub__. You need the right-side operand’s __rsub__, not the left-side operand. There is no … Read more
Java Language Specification is pretty clear on that (emphasis mine): 15.12.2 Compile-Time Step 2: Determine Method Signature […] The first phase (§15.12.2.2) performs overload resolution without permitting boxing or unboxing conversion […] If no applicable method is found during this phase then processing continues to the second phase. […] The second phase (§15.12.2.3) performs overload … Read more
This is an example using a completion handler: class func getFilm(filmID: Int, completion: @escaping (String) -> ()) { let url = URL(string: “https://api.kinopoisk.cf/getFilm?filmID=\(filmID)”)! URLSession.shared.dataTask(with:url) { (data, response, error) in if error != nil { print(error!) completion(“”) } else { if let returnData = String(data: data!, encoding: .utf8) { completion(returnData) } else { completion(“”) } } … Read more
So the way more simplest answer is just an “identity” job that has a SequenceFile output. Looks like this in java: public static void main(String[] args) throws IOException, InterruptedException, ClassNotFoundException { Configuration conf = new Configuration(); Job job = new Job(conf); job.setJobName(“Convert Text”); job.setJarByClass(Mapper.class); job.setMapperClass(Mapper.class); job.setReducerClass(Reducer.class); // increase if you need sorting or a special … Read more
You’re on the right track using JavaConversions, but the method you need for this particular conversion is seqAsJavaList: java.util.List<String> convert(scala.collection.Seq<String> seq) { return scala.collection.JavaConversions.seqAsJavaList(seq); } Update: JavaConversions is deprecated, but the same function can be found in JavaConverters. java.util.List<String> convert(scala.collection.Seq<String> seq) { return scala.collection.JavaConverters.seqAsJavaList(seq); }