compare | 易学教程

How do I compare two dictionaries in Swift?

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问题 Is there an easy way to compare two [String: AnyObject] dictionaries in swift, since it doesn't accept the == operator? By comparing two dictionaries, I mean checking that they have the same exact keys and for every key they have the same values. 回答1: As already mentioned by Hot Licks you can use NSDictionary method isEqualToDictionary() to check if they are equal as follow: let dic1: [String: AnyObject] = ["key1": 100, "key2": 200] let dic2: [String: AnyObject] = ["key1": 100, "key2": 200]

Compare two CSV files and search for similar items

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问题 So I've got two CSV files that I'm trying to compare and get the results of the similar items. The first file, hosts.csv is shown below: Path Filename Size Signature C:\ a.txt 14kb 012345 D:\ b.txt 99kb 678910 C:\ c.txt 44kb 111213 The second file, masterlist.csv is shown below: Filename Signature b.txt 678910 x.txt 111213 b.txt 777777 c.txt 999999 As you can see the rows do not match up and the masterlist.csv is always larger than the hosts.csv file. The only portion that I'd like to search

Compare two CSV files and search for similar items

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Comparing two integer arrays in java

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问题 I am trying to write code to compare two arrays. In the first array I have put my own digits, but the second the array takes numbers from the input file. The size of this array is determined by the first number in the file while the first array is always of size 10. The length must be the same for both arrays as well as the numbers. My code is below: public static void compareArrays(int[] array1, int[] array2) { boolean b = false; for (int i = 0; i < array2.length; i++) { for (int a = 0; a <

How would you compare jQuery objects?

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问题 So I'm trying to figure out how to compare two jQuery objects, to see if the parent element is the body of a page. here's what I have: if ( $(this).parent() === $('body') ) ... I know this is wrong, but if anybody understands what I'm getting at, could they point me towards the correct way of doing this? 回答1: You need to compare the raw DOM elements, e.g.: if ($(this).parent().get(0) === $('body').get(0)) or if ($(this).parent()[0] === $('body')[0]) 回答2: Why not: if ($(this).parent().is("body

Comparing Strings in Cocoa

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问题 I have tried: - (NSString*) generateString { NSString* stringToReturn = @"thisString"; return stringToReturn; } - (void) otherMethod { NSString *returnedString = [self generateString]; if (returnedString == @"thisString") { // Do this } else if (returnedString == @"thatString") { // Do that } } Which never matches. I have then tried if ([returnedString compare:@"thisString"] == 1) But the compare method always returns 1 for me, even when comparing with a different string. What is the correct

How to parse a month name (string) to an integer for comparison in C#?

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问题 I need to be able to compare some month names I have in an array. It would be nice if there were some direct way like: Month.toInt("January") > Month.toInt("May") My Google searching seems to suggest the only way is to write your own method, but this seems like a common enough problem that I would think it would have been already implemented in .Net, anyone done this before? 回答1: DateTime.ParseExact(monthName, "MMMM", CultureInfo.CurrentCulture ).Month Although, for your purposes, you'll

Why does (0 < 5 < 3) return true?

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问题 I was playing around in jsfiddle.net and I'm curious as to why this returns true? if(0 < 5 < 3) { alert("True"); } So does this: if(0 < 5 < 2) { alert("True"); } But this doesn't: if(0 < 5 < 1) { alert("True"); } Is this quirk ever useful? 回答1: Order of operations causes (0 < 5 < 3) to be interpreted in javascript as ((0 < 5) < 3) which produces (true < 3) and true is counted as 1, causing it to return true. This is also why (0 < 5 < 1) returns false, (0 < 5) returns true, which is

Getting “command not found” error while comparing two strings in Bash

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问题 My whole Script is currently this: #!/bin/sh clear; blanko=""; # Dummy-Variablen variable=Testvariable; if [[$variable == $blanko]]; then echo "Nichts da!" else echo $variable fi and if i enter TestSelect.sh i get /usr/bin/TestSelect.sh: line 6: [[Testvariable: command not found Testvariable how can i fix this? 回答1: This is problem: if [[$variable == $blanko]]; Spaces are required inside square brackets, use it like this: [[ "$variable" == "$blanko" ]] && echo "Nichts da!" || echo "$variable"

【模拟+字符串处理】HDU-1073 Online Judge

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注解 1、模拟题，模拟输入过程，字符串处理。 2、用两个数组分别保存实际输出和正确输出，首先比较两个字符串是否相同，若不相同，分别将两个数组的空格、Tab键、回车等都去掉，再去比较两个字符串是否相同。若还是不同，则输出WA；如果去掉后相同，输出PE；如果一开始就相同，输出AC。 3、详细了解ACM赛制中的几种输出形式：AC，PE，RE，WA等。代码 # include <iostream> # include <sstream> using namespace std ; int stringToInt ( string s ) { stringstream ss ; ss << s ; int n ; ss >> n ; return n ; } string str [ 2 ] ; string tmp [ 2 ] ; string replaceStr [ 2 ] ; void input ( ) { for ( int j = 0 ; j < 2 ; j ++ ) { tmp [ j ] = "" ; str [ j ] = "" ; getline ( cin , tmp [ j ] ) ; while ( tmp [ j ] . compare ( "END" ) ) { if ( tmp [ j ] . compare ( "START" ) ) { str [ j