numbers

问题 I am using Jackson in the jsonrpc4j to access a remote service. In my Java application there are no defined classes for the return values, so deserialization produces generic LinkedHashMaps. So I cannot put any annotations anywhere. jsonrpc4j can take in a Jackson ObjectMapper object. The remote service responds with structured json objects, some fields of which are very big decimal numbers, and Jackson treats them as Doubles. An example object can look like this {"s1":"zxcvb","f1":20.00234,

问题 I programmed a lot in java and know the basics of python and sometimes I play with c++... And those are all High Level Programming Languages and they're great and all but I was curious about how things worked at a deeper level in this case assembly language... I started to learn assembly for the x86 processor and chose NASM as my assembler. I spent some time learning how registers and the stack work, how the information is stored and how the information can be changed , not just reading but

问题 I want to generate random number using Date() to format it like for example: ddmmyyyyHhNnSs How do I achieve that? Is that even possible? I was kinda hoping I can do it easy way by the expression builder but I seem to fail on each approach ;) This number need to populate txtID field and it will be unique identifier for each database entry. 回答1: That's quite easy - with a twist. Problem is that Rnd only returns a Single and the resolution of this only allows for 10000000 unique values. As you

问题 Ruby may not be the optimal language for this but I'm sort of comfortable working with this in my terminal so that's what I'm going with. I need to process the numbers from 1 to 666666 so I pin out all the numbers that contain 6 but doesn't contain 7, 8 or 9. The first number will be 6 , the next 16 , then 26 and so forth. Then I needed it printed like this (6=6) (16=6) (26=6) and when I have ranges like 60 to 66 I need it printed like (60 THRU 66=6) (SPSS syntax). I have this code and it

问题 I have several lists of varying length containing simple, positive integers, like (2 4 1 3) and I want to check whether or not all numbers are following each other after the list is sorted. This means the order itself doesn't matter but there are no gaps allowed. (2 4 1 3) is correct (2 4 1 5) isn't correct Before I start to re-invent the wheel, I would like to know if there is an alternative to sorting the list and then checking whether or not the difference of the first and the second (and

问题 I have this text with numbers: My numbers are 04, and 0005 My numbers are 05, and 0006 My numbers are 06, and 0035 My numbers are 07, and 0007 My numbers are 08, and 0009 This is the code I always used to increment or decrement numbers in a selection/block selection/column: p.e. increment the last 4 numbers in above text with 8: '<,'>s/\%V\<\d\{4}\>/\=submatch(0)+8/g but I noted today that it does strange things. This is the output: My numbers are 04, and 13 My numbers are 05, and 14 My

问题 The ECMAScript Number type has exactly 18437736874454810627 values. Why did they come to this number (18437736874454810627)? In other words, because computers are usually based on binary system, then almost all the numbers (like bit, byte, int16, int32, etc) are based on 2. But I can't see how we can get from 18437736874454810627 to 2 . 回答1: Because a floating point number used by JavaScript has a fixed number of bits, used as explained in the ECMA standard (page 41 of the PDF, or page 29 as

问题 I use the programming language: J. I want to put all of the digit of a number in a list. From: 12345 to: 1 2 3 4 5 What can I do? 回答1: Another approach: intToList =: 3 : '((>. 10 ^. y)#10) #: y' This doesn't convert to string and back, which can be potentially costly, but counts the digits with a base-10 log, then uses anti-base ( #: ) to get each digit. EDIT: Better, safer version based on Dan Bron's comment: intToList =: 3 : '10 #.^:_1 y' 回答2: The way I'd write this is 10&#.^:_1 which we

问题 I want to find out if a string ends with number (with/without decimal). If it ends, I want to extracts it. "Test1" => 1 "Test" => NOT FOUND "Test123" => 123 "Test1.1" => 1.1 I have missed a few details. 1. Prior to number, string can contain special characters also 2. It is single line, not multiline. 回答1: give this pattern a try, \d+(\.\d+)?$ 回答2: Matches line start, any chars after that and a a number (with optional decimal part) at the end of the string (allowing trailing whitespace

问题 In JavaScript the highest integer possible is defined via Number.MAX_SAFE_INTEGER. and also in C++ can be obtained with the std: std::numeric_limits<int>::max() Is there such a constant in QML for ints or doubles? 回答1: As originally suspected, the 2000000000 number listed in the documentation is incorrect. Also, IMO this is an important value that shouldn't really be subject to such careless approximations. "Around" should only be used when the actual value is unknown for certain or not