compare

How do I use the Comparable protocol in Swift? In the declaration it says I'd have to implement the three operations <, <= and >=. I put all those in the class but it doesn't work. Also do I need to have all three of them? Because it should be possible to deduce all of them from a single one. Kametrixom The Comparable protocol extends the Equatable protocol -> implement both of them In Apple's Reference is an example from Apple (within the Comparable protocol reference) you can see how you should do it: Don't put the operation implementations within the class, but rather on the outside/global

I want to compare the class type in Java. I thought I could do this: class MyObject_1 {} class MyObject_2 extends MyObject_1 {} public boolean function(MyObject_1 obj) { if(obj.getClass() == MyObject_2.class) System.out.println("true"); } I wanted to compare in case if the obj passed into the function was extended from MyObject_1 or not. But this doesn't work. It seems like the getClass() method and the .class gives different type of information. How can I compare two class type, without having to create another dummy object just to compare the class type? Try this: MyObject obj = new MyObject

Directory Compare目录比较软件旨在帮助您保持您的（文件，正在开发等）的方案在备份硬盘或其他存储系统（重要册目录like 100Mb的磁盘），以及在一个压缩。zip文件。备份可能会自动（自动模式），或通过使用友好的用户界面。 Directory Compare目录比较软件是一个实物或图形界面cpy版本：它少得多的选择，但它的视觉界面使容易selctive副本。例如，现代的编译器产生的辅助数据，这将加快编制数额惊人，但需要大量的存储空间。 （例如，源文件的目录比较小于100 Kb的，而是由编译器生成的辅助文件占用7,500 Kb的！） Directory Compare is a utility to help you keeping copies of your important directories (documents, programs under development and so on) in a backup hard disk or any other storage system (like 100Mb diskettes), as well as in a compressed .zip file (only in version 2.53). The backup may be made automatically (in

How do I check if two objects, e.g. dataframes, are value equal in R? By value equal, I mean the value of each row of each column of one dataframe is equal to the value of the corresponding row and column in the second dataframe. It is not clear what it means to test if two data frames are "value equal" but to test if the values are the same, here is an example of two non-identical dataframes with equal values: a <- data.frame(x = 1:10) b <- data.frame(y = 1:10) To test if all values are equal: all(a == b) # TRUE To test if objects are identical (they are not, they have different column names)

We have two data frames here: the expected dataframe: +------+---------+--------+----------+-------+--------+ |emp_id| emp_city|emp_name| emp_phone|emp_sal|emp_site| +------+---------+--------+----------+-------+--------+ | 3| Chennai| rahman|9848022330| 45000|SanRamon| | 1|Hyderabad| ram|9848022338| 50000| SF| | 2|Hyderabad| robin|9848022339| 40000| LA| | 4| sanjose| romin|9848022331| 45123|SanRamon| +------+---------+--------+----------+-------+--------+ and the actual data frame: +------+---------+--------+----------+-------+--------+ |emp_id| emp_city|emp_name| emp_phone|emp_sal|emp_site|

I'm working on an open source project that uses SQL Server 2005 as the data store. We need a DB compare tool to generate diff scripts to be able to upgrade a DB from one version to another. Is there an open source or free SQL Server DB diff tool out there that generates a convert script? I think that Open DBiff does a good job. It's simple and I works with SQL Server 2005/2008. But only generate the change script. Nothing more and nothing less. On CodePlex I noticed yesterday DbDiff ( http://www.codeplex.com/OpenDBiff ) that you could try. Supports Sql2005 and 2008, I did not try it. I'd