compare

问题 I am currently using a custom service in my android application to retrieve a JSONArray from a remote database. Once I have retrieved the JSONArray, I would like to compare its contents to another JSONArray which I call 'mostRecent.' If the newly retrieved JSONArray differs from 'mostRecent' then I would like to update 'mostRecent' with the newly retrieved JSONArray. If I am not mistaken, however, the JSONArray equals method compares the instance of the JSONArray object and not the contents,

问题 What is the best way to compare two very large numbers contained in string literals? For example I want to compare the followings: "90000000000000000000000000000000000000000000000000000000000000000000000000001" "100000000000000000000000000000000000000000000000000000000000000000000000000009" or "0000000000111111111111111111111111111111111111111111111111111111111111111111" "0000001111111111111111111111111111111111111111111111111111111111111111111111" In both cases obviously the second one is

问题 Some tables' data need to be updated(or deleted , inserted) in my system. But I want to know which data are updated,deleted and inserted. So before the data are changed ,I will backup the table in different schema just like this: create table backup_table as select * from schema1.testtable and after the data are changed,I want to find the difference between backup_table and testtable ,and I want to save the difference into a table in the backup schema. the sql I will run is like this: CREATE

问题 I'm trying to find a faster way to compare two json objects. Currently, we have a function that has about 7 $.each() calls in it, which I believe is a very inefficient way to do this, but I have no idea how to do it faster. I'll post our function that compares the two objects, and also, a sample of the two objects. This is just one piece of data from object-1. There are like 4000 of these within the entire object. { "aaData": [ { "serial":"LRRFNGHX", "model":"Dell Optiplex", "os":"Windows NT"

问题 String 1: func1(test1) String 2: func1(test2) I want to compare these 2 strings upto the first open braces '('. So for the given example it should return true since the string upto '(' in both the strings is 'func1'. Is there any way to do that without splitting? 回答1: String#substring() method will help on this case this combined with String#indexOf() method String x1 = "func1(test1)"; String x2 = "func1(test1)"; String methName1 = x1.substring(0, x1.indexOf("(")); String methName2 = x2

问题 Sorry if this is a really simple process. I've got a folder structure with ~4,000 directories at root level (empty), and another location with another set of folders with data. I want to copy only the files from within the folders in location2 to the folders within location1 ie \FolderABC123\Archive, but only if the directory names match. I'm sure windows explorer copy, or xcopy or some other utility can do it with more ease, but I'd like to get my head into PowerShell, and think this would

问题 I want to see if a string, which is a title of a post on the apple rss news feed contains a substring, e.g. "Steve" or "Jobs". I organized the posts into a uitableview. So there WAS a post which had Steve or Jobs in its title so I used this to check: if ([[entry title] localizedCaseInsensitiveCompare:@"Steve"] == NSOrderedSame || [[entry title] localizedCaseInsensitiveCompare: @"Jobs"] == NSOrderedSame) { NSLog(@"Comparism of Steve Jobs"); cell.imageView.image = [UIImage imageNamed:@"steve

问题 I searched the forum but did not found the answer to my question. I have a file that look like this : chr left_pos right_pos 1 2596 3084 1 3084 5869 1 18500 21000 3 21000 21536 3 22872 23179 I already sorted ou the file on column one then column 2: I would like to compare the number in field 3 to the number in field 2 in the following line if the field in column one are identical. If yes add the label equal at the end of the line. If not add not equal. The output should look like this chr

问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 6 years ago . I have following in the database $checktime = mysql_query("SELECT * FROM drafts WHERE page='sched'"); while($row = mysql_fetch_array($check)){ if($row['posted'] = date('j-n-Y')) { echo "ok"; } } I'd like to compare this date against today's date. Please help me if everyone knows. thank you! 回答1: Condition is

问题 I'm trying to design this script that's supposed to be used as a part of a logon script for alot of users. And this script is basically supposed to take a source folder and destination folder as basically just make sure that the destination folder has the exact same content as the source folder. But only copy if the datemodified stamp of the source file is newer than the destination file. I have been thinking out this basic pseudo code, just trying to make sure this is valid and solid