I have the following 2 data.frames: a1 <- data.frame(a = 1:5, b=letters[1:5]) a2 <- data.frame(a = 1:3, b=letters[1:3]) I want to find the row a1 has that a2 doesn’t. Is there a built in function for this type of operation? (p.s: I did write a solution for it, I am simply curious if someone already … Read more
Basically I want to do this: obj = ‘str’ type ( obj ) == string I tried: type ( obj ) == type ( string ) and it didn’t work. Also, what about the other types? For example, I couldn’t replicate NoneType. 14 Answers 14
I want to design a program that can help me assess between 5 pre-defined colors which one is more similar to a variable color, and with what percentage. The thing is that I don’t know how to do that manually step by step. So it is even more difficult to think of a program. More … Read more
This question already has answers here: What is a free tool to compare two SQL Server Databases? [closed] (7 answers) Closed 2 years ago. I would like to compare two SQL Server databases including schema (table structure) and data in tables too. What is best tool to do this? 15 Answers 15
In Java, Arrays.equals() allows to easily compare the content of two basic arrays (overloads are available for all the basic types). Is there such a thing in C#? Is there any “magic” way of comparing the content of two arrays in C#? 18 Answers 18
What is the easiest way (using a graphical tool or command line on Ubuntu Linux) to know if two binary files are the same or not (except for the time stamps)? I do not need to actually extract the difference. I just need to know whether they are the same or not. 15 Answers 15
How can I compare if BigDecimal value is greater than zero? 7 Answers 7
I have two objects: oldObj and newObj. The data in oldObj was used to populate a form and newObj is the result of the user changing data in this form and submitting it. Both objects are deep, ie. they have properties that are objects or arrays of objects etc – they can be n levels … Read more
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? 14 Answers 14
I have two cloned repositories of two very similar open-source projects, which I have been working on in different instances in Sublime Text 2 to arrive at my desired result. Code from both of these projects was used. I have been using Git as version control for my project, but have not included the original … Read more
