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CSV objects in Ruby. What are they exactly?

map works on any object that includes the Enumerable mixin. In order to work with Enumerable, the class needs to provide each - that's the foundation all the other nice methods are built on. Objects of the CSV class fit this pattern, as you can see in the documentation for the class.

(The reason it doesn't push it straight into an array is because it's nice to be able to read the input file line by line rather than having to store the whole thing in memory before doing anything with it.)

Categories : Ruby

Related to : CSV objects in Ruby. What are they exactly?
(Java) How can I sort an array of objects, and break ties between two objects?
You need to modify Comparable to not only consider wins, but to consider ties, especially when wins occur. So in your compareTo, add an if to check when wins are equal, and then inside that if do the check on losses. Here you can even add in the check for draws as well.

Categories : Java
Creating an Array with class objects and with derived Objects C++
First, you need to fix a syntax error: unlike Java or C# where array type is indicated by a pair of empty square brackets after the type name, C++ "understands" square brackets after the name of the variable change the type of the variable to an array type. Die[] regDieBag[10]; // ^^ This syntax is incorrect Now, when you see these lines together Die regDieBag[10]; // ^ No asterisk and reg

Categories : C++
How can I delete the objects in Amazon s3 after the objects reaches certain number say 20
You need to bring the check for size > 20 outside your loop. Also, maximum number of summaries that can be pulled at a time is 1000 - so, you need to check if there are more, pull them and delete them. AWSCredentials credentials = new BasicAWSCredentials(accessKey, secretKey); AmazonS3 s3 = new AmazonS3Client(credentials); String bucketName = "testbucket"; System.out.println("Listing objects")

Categories : Java
compose objects without initializing objects that are not in hash
Your question raises some interesting issues. I will try to explain how you can fix it, but, as @Uri mentions, there may be better ways to address your problem. I've assumed @tranfee is to be set equal to the first value in the hash whose key begins with "tran" and that @rate is to be set equal to the first value in the hash whose key begins with "rate". If that interpretation is not correct, ple

Categories : Ruby
How to add List of objects in a Map
1.) Create HashMap with Key as Long and value as List<String>. 2.) Use put method of HashMap, as below. public static void main(String[] args) { Map<Long, List<String>> my`enter code here`Map = new HashMap<Long, List<String>>(); myMap.put(101L, new ArrayList<String>()); }

Categories : Java
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