Top "Unique" questions

How to generate unique id in Dart

I write websocket chat. How to generate unique id for user? now i use this code: id = new DateTime.now().…

unique dart identity uuid uniqueidentifier

Does a name attribute have to be unique in a HTML document?

I remember reading in the spec once that both the id attribute and the name attribute share the same namespace …

html unique

Get unique values in List of Lists in python

I want to create a list (or set) of all unique values appearing in a list of lists in python. …

python list set unique

How can I make short random unique keys, like YouTube video IDs, in PHP?

Is there any way to create unique keys like those used in YouTube video urls (ex: https://www.youtube.com/…

php unique

Make a varchar(50) column unique

I have a column (which represents an e-mail) in a SQL Server database with varchar(50) as data type and I …

sql-server unique varchar

Detecting a "unique" anonymous user

It is impossible to identify a user or request as unique since duping is trivial. However, there are a handful …

unique visitor-statistic user-tracking visitors

Is android.os.Build.SERIAL unique?

I would like to use a unique id for android device that works for phone and Tablet. (IMEI doesn't work …

android unique

R- Collapse rows and sum the values in the column

I have the following dataframe (df1): ID someText PSM OtherValues ABC c 2 qwe CCC v 3 wer DDD b 56 ert EEE …

r unique aggregate rows collapse

Unique hardware ID in Mac OS X

Mac OS X development is a fairly new animal for me, and I'm in the process of porting over some …

c++ macos unique hardware-id

how to give a div tag a unique id using javascript

I'm able to make a div tag using the document.createElement('div') However i do not know how to give …

javascript html unique innerhtml createelement