unique
How to make elements of vector unique? (remove non adjacent duplicates)
I think you would do it like this: I would use two iterators on the vector : The first of one reads the data and inserts it a temporary set. When the read data was not in the set you copy it from the first iterator to the second and increment it. At the end … Read more
jQuery – remove duplicates from an array of strings [duplicate]
The jQuery unique method only works on an array of DOM elements. You can easily make your own uniqe function using the each and inArray methods: function unique(list) { var result = []; $.each(list, function(i, e) { if ($.inArray(e, result) == -1) result.push(e); }); return result; } Demo: http://jsfiddle.net/Guffa/Askwb/
Unique values of two columns for pandas dataframe [duplicate]
You need groupby + size + Series.reset_index: df = df.groupby([‘Col1’, ‘Col2’]).size().reset_index(name=”Freq”) print (df) Col1 Col2 Freq 0 1 1 1 1 1 2 3 2 3 4 2
Is there an AddUnique method similar to Addrange() for alist in C#
One choice is to add them and remove the repeated ones: var list = new List<Car>(); list.AddRange(GetGreenCars()); list.AddRange(GetBigCars()); list.AddRange(GetSmallCars()); list = list.Distinct().ToList();
Best way to get machine id on Linux?
Depending on your kernel, the DMI information may be available via sysfs. Try those: # cat /sys/class/dmi/id/board_serial xxxxxxxxxxxxxxx # cat /sys/class/dmi/id/product_uuid xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx or using a tool # dmidecode -s baseboard-serial-number … # dmidecode -s system-uuid …
Generating random, unique values C#
I’m calling NewNumber() regularly, but the problem is I often get repeated numbers. Random.Next doesn’t guarantee the number to be unique. Also your range is from 0 to 10 and chances are you will get duplicate values. May be you can setup a list of int and insert random numbers in the list after checking … Read more
MySQL select rows that do not have matching column in other table
Typically, you would use NOT EXISTS for this type of query SELECT p.Name FROM pooltest p WHERE NOT EXISTS (SELECT s.Name FROM senttest s WHERE s.Name = p.Name) An alternative would be to use a LEFT OUTER JOIN and check for NULL SELECT p.Name FROM pooltest p LEFT OUTER JOIN senttest s ON s.Name = … Read more