How to check if two data frames are equal [duplicate]
Look up all.equal. It has some riders but it might work for you. all.equal(df3,df4) # [1] TRUE all.equal(df2,df1) # [1] TRUE
compare
Getting “command not found” error while comparing two strings in Bash
This is problem: if [[$variable == $blanko]]; Spaces are required inside square brackets, use it like this: [[ “$variable” == “$blanko” ]] && echo “Nichts da!” || echo “$variable”
Using jQuery to compare two arrays of Javascript objects
There is an easy way… $(arr1).not(arr2).length === 0 && $(arr2).not(arr1).length === 0 If the above returns true, both the arrays are same even if the elements are in different order. NOTE: This works only for jquery versions < 3.0.0 when using JSON objects
How to compare Enums in TypeScript
Well I think I found something that works: if (e1.valueOf() === e2.valueOf()) { console.log(“equal”) } But I’m a bit surprised that this isn’t mentioned anywhere in the documentation.
The right way to compare a System.Double to ‘0’ (a number, int?)
Well, how close do you need the value to be to 0? If you go through a lot of floating point operations which in “infinite precision” might result in 0, you could end up with a result “very close” to 0. Typically in this situation you want to provide some sort of epsilon, and check … Read more
How to parse a month name (string) to an integer for comparison in C#?
DateTime.ParseExact(monthName, “MMMM”, CultureInfo.CurrentCulture ).Month Although, for your purposes, you’ll probably be better off just creating a Dictionary<string, int> mapping the month’s name to its value.
How can I compare a string to multiple correct values in Bash?
If the main intent is to check whether the supplied value is not found in a list, maybe you can use the extended regular expression matching built in BASH via the “equal tilde” operator (see also this answer): if ! [[ “$cms” =~ ^(wordpress|meganto|typo3)$ ]]; then get_cms ; fi
Checking for duplicate strings in JavaScript array
The findDuplicates function (below) compares index of all items in array with index of first occurrence of same item. If indexes are not same returns it as duplicate. let strArray = [ “q”, “w”, “w”, “w”, “e”, “i”, “u”, “r”]; let findDuplicates = arr => arr.filter((item, index) => arr.indexOf(item) != index) console.log(findDuplicates(strArray)) // All duplicates … Read more
Query comparing dates in SQL
Instead of ‘2013-04-12’ whose meaning depends on the local culture, use ‘20130412’ which is recognized as the culture invariant format. If you want to compare with December 4th, you should write ‘20131204’. If you want to compare with April 12th, you should write ‘20130412’. The article Write International Transact-SQL Statements from SQL Server’s documentation explains … Read more
How would you compare jQuery objects?
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])