compare

问题 Versioning of Amazon S3 buckets is nice, but I don't see any easy way to compare versions of a file - either through the console or through any other app I found. S3Browser seems to have the best versioning support, but no comparison. Is there a way to compare versions of a file on S3 without downloading both versions and comparing them manually? -- EDIT: I just started thinking that some basic automation should not be too hard, see snippet below. Question remains though: is there any tool

问题 I want to compare two audio file for example mp3 and wav. I use musicg to compare by fingerprints. Wave record1 = new Wave(music1.toString()); Wave record2 = new Wave(music2.toString()); FingerprintSimilarity Similarity=record1.getFingerprintSimilarity(record2); System.out.println(Similarity.getSimilarity()); musicg work only on wav so I convert mp3 to wav using JAVE File temp = new File("temp.wav"); AudioAttributes audio = new AudioAttributes(); audio.setCodec("pcm_s16le"); audio.setBitRate

问题 Does anybody know of a shortcut to test whether three numbers are the same? I know this works: if number1 == number2 && number2 == number3 { } But I would like something cleaner, such as; if number1 == number2 == number3 { } It's quite important as I'm comparing a lot of different values. 回答1: You can use the power of tuples and the Transitive Property of Equality. if (number1, number2) == (number2, number3) { } The clause of this IF is true only when number1 is equals to number2 AND number2

问题 I have two files and I am working on writing the transform I would like the transform to return the names of the people whose details have been modified (address,age) and the names of the people who do not exist in file 1 but present in file 2 as well as people who exist in file 1 but do not exist in file 2. I have tried the following but it can only compare, it cannot find any addition or deletion <xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"> <xsl:output

问题 I'm using mysql/php/apache . I have the following situation: 2 tables where I need to compare some information, it is no problem if I use INNER JOIN, but I have a problem in my columns. table 1 -> invoices_account table 2 -> invoices_payable on my invoices_account I have this fields: id, categ, categ_name, code, name, active, essential on my invoices_payable I have: id, ..(all my fields).. , reference the value of my field reference in invoices_payable is the same value of categ and code in

问题 I am trying to filter two arrays to get a final result with user ids from my mysql database I have two arrays the first one: print_r($arr_partner_id); Array ( [0] => Array ( [id] => 335 [id_partner] => 0 ) [1] => Array ( [id] => 469 [id_partner] => 1 ) [2] => Array ( [id] => 457 [id_partner] => 1 ) [3] => Array ( [id] => 339 [id_partner] => 0 ) [4] => Array ( [id] => 361 [id_partner] => 0 ) ) and the second one: print_r($arr_member_id); Array ( [0] => 457 [1] => 469 [2] => 339 [3] => 361 )

问题 I need to compare XML values with PostgreSQL 9.X. Example: SELECT 1 FROM t WHERE xml1=xml2; -- error for XML datatype but can do only with casting to text datatype, SELECT 1 FROM t WHERE xml1::text=xml2::text; -- OK, but is a text-comparison that is not the best way to do this. I need a better comparison algorithm... Looking for it, I find that, perhaps, "Canonical XML" can be compared. How to do "Canonical XML comparison" with PostgreSQL? NOTE : PostgreSQL team assumes false premisse about

问题 I need to compare XML values with PostgreSQL 9.X. Example: SELECT 1 FROM t WHERE xml1=xml2; -- error for XML datatype but can do only with casting to text datatype, SELECT 1 FROM t WHERE xml1::text=xml2::text; -- OK, but is a text-comparison that is not the best way to do this. I need a better comparison algorithm... Looking for it, I find that, perhaps, "Canonical XML" can be compared. How to do "Canonical XML comparison" with PostgreSQL? NOTE : PostgreSQL team assumes false premisse about

问题 I want to use openCV to check whether an image is somewhere on another image. This other image could also be a photo. I dont want to know the position or anything, I just want to know whether the image is there or not - or, if the images are "equal enough". Example: I use my iphone to take a photo of a static object. Now, one day later I take this photo again and I want to check if it is the mostly the same object. Whats the best way to do this? I alos tried CVMatchTemplate (but was not able

问题 I want to use openCV to check whether an image is somewhere on another image. This other image could also be a photo. I dont want to know the position or anything, I just want to know whether the image is there or not - or, if the images are "equal enough". Example: I use my iphone to take a photo of a static object. Now, one day later I take this photo again and I want to check if it is the mostly the same object. Whats the best way to do this? I alos tried CVMatchTemplate (but was not able