numeric

问题 In SQL Server you can use FLOAT or REAL to store floating point values the storage format of which is cleared defined by the IEEE 754 standard. For fixed point values we can use DECIMAL type (which has a synonym NUMERIC ). However I'm not pretty sure how SQL Server store DECIMAL values internally. For example, if I define a table and insert a row like this: IF OBJECT_ID('dbo.test_number_types') IS NOT NULL DROP TABLE dbo.test_number_types; CREATE TABLE dbo.test_number_types ( id INT IDENTITY

问题 Motivation: I would like to convert hashes (MD5/SHA1 etc) into decimal integers for the purpose of making barcodes in Code128C. For simplicity, I prefer all the resulting (large) numbers to be positive. I am able to convert byte[] to BigInteger in C#... Sample from what I have so far: byte[] data; byte[] result; BigInteger biResult; result = shaM.ComputeHash(data); biResult = new BigInteger(result); But (rusty CS here) am I correct that a byte array can always be interpreted in two ways: (A):

问题 Motivation: I would like to convert hashes (MD5/SHA1 etc) into decimal integers for the purpose of making barcodes in Code128C. For simplicity, I prefer all the resulting (large) numbers to be positive. I am able to convert byte[] to BigInteger in C#... Sample from what I have so far: byte[] data; byte[] result; BigInteger biResult; result = shaM.ComputeHash(data); biResult = new BigInteger(result); But (rusty CS here) am I correct that a byte array can always be interpreted in two ways: (A):

问题 I am trying to create a numeric TextField for Integers by using the TextFormatter of JavaFX 8. Solution with UnaryOperator: UnaryOperator<Change> integerFilter = change -> { String input = change.getText(); if (input.matches("[0-9]*")) { return change; } return null; }; myNumericField.setTextFormatter(new TextFormatter<String>(integerFilter)); Solution with IntegerStringConverter: myNumericField.setTextFormatter(new TextFormatter<>(new IntegerStringConverter())); Both solutions have their own

问题 This question already has an answer here : What are the rules for invoking functions on number literals in JS? [duplicate] (1 answer) Closed 3 years ago . In Chrome console, also test in edge and firefox 5.toFixed(2); get Uncaught SyntaxError: Invalid or unexpected token in chrome. SyntaxError: identifier starts immediately after numeric literal in firefox. Expected ';' in edge. But code below 5.1.toFixed(2); (5).toFixed(2); is ok in all three browsers above. 回答1: This is because of the

问题 I recently started studying parallel coding, I'm still at the beginning so I wanted to try some very simple coding. Since it is in my interest to perform parallel numerical integration I started with a simple summation Fortran code: program par_hello_world use omp_lib implicit none integer, parameter:: bign = 1000000000 integer:: i double precision:: start, finish, start1, finish1, a a = 0 call cpu_time(start) !$OMP PARALLEL num_threads(8) !$OMP DO REDUCTION(+:a) do i = 1,bign a = a + sqrt(1

问题 In MS Excel 2013 I import a CSV file, no matter if I format it using the delimined or any other option the results are the same. My date in Excel looks like: 30 Jan, 15 18:02:05 in a single cell. All I need is to convert it to a date format 30.01.2015 for example. I have a column of these and need to convert the values at once. (I tried TEXT, DATE, MID, DATEVALUE, MONTH, DATEVALUE...) but none of them are able to convert the date format. Also it does not matter if I convert it with format

问题 For Objective-C in iOS: If I have a string how could I read the unicode numeric value of an individual character? For example if my string was: "∆" That unicode character is U+0394, so how could I read the string, figure out the "0394" then create a new string with say 100 added to that value, so the new string would be the character U+0494 or "ҕ" Thanks! 回答1: First, there is a fallacy in your logic. ∆ + 100 != ҕ . Unicode is evaluated in base-16 (hex), so '∆' is actually equal to 916 in

问题 In my project I'm using huge set of short strings in ASCII 7-bit and have to process (store, compare, search etc) these strings with maximum performance. Basically, I build some Index array of uint64_t type and each element stores 9 characters of a word and use that index as Numeric element for any string comparison operation. Current implementation works fast, but may be it's possible to improve it a bit if you will.. This function converts up to 9 initial characters to uint64_t value - any

问题 I have a database (Postgres 7.4) field for address Example Data address | zip -----------------------+-------------+ 123 main street | 12345 -----------------------+-------------+ 3 where road | 12345 -----------------------+-------------+ South 3 where road | 12345 The queries SELECT * FROM tbl WHERE zip = 12345 AND address ILIKE '3%' I get all but I don't want 123 main street SELECT * FROM tbl WHERE zip = 12345 AND address ILIKE '123%' I get the results I want My question is how do I just