Hi there! I have an array that looks just like that: array(3) { ["fk_article_id"]=> string(1) "4" ["first_name"]=> string(6) "Ulrike" ["last_name"]=> string(10) "Grasberger" } array(3) { ["fk_article_id"]=> string(1) "9" ["first_name"]=> string(5) "Frank" ["last_name"]=> string(9) "Neubacher" } array(3) { ["fk_article_id"]=> string(3...
I hope this is not a duplicate question, but if it is, feel free to point me in the right direction. I have a vector<vector<int> >. Is it possible to use unique() on this? Something like: vector<vector<int> > myvec; //blah blah do something to myvec vector<vector<int> >::interator it = unique(myvec.begin(), myvec.end()); Would the r...
It's so much nice to track a user file with a nice string like "JES9-99S" instead of file no 3992 Suppose at most we have 10MIL files, i need a uniqid generator algorithm that can generate unique id's with length of 7 or 8 characters. ...
I am trying out Google App Engine Java, however the absence of a unique constraint is making things difficult. I have been through this post and this blog suggests a method to implement something similar. My background is in MySQL.Moving to datastore without a unique constraint makes me jittery because I never had to worry about duplicat...
Suppose you have a list of values x <- list(a=c(1,2,3), b = c(2,3,4), c=c(4,5,6)) I would like to find unique values from all list elements combined. So far, the following code did the trick unique(unlist(x)) Does anyone know a more efficient way? I have a hefty list with a lot of values and would appreciate any speed-up. ...
Hi, I want to get only the rows with a unique value for a certain field (2 actually). My table is like this: id senderID receiverID ... ... ... _________________________________________________ 0 0 1 ... ... ... 1 2 1 ... ... ... 2 1 0 ...
My process runs multiple instances (processes) and multiple threads and all of them write to the same database. As soon as the request is placed, a unique req id is generated for the record to be added to the proprietary db. Here are our limitations: It cannot be more than 9 char length, needs to have hhmmss as the first 6 chars. We deci...
I am working on a Django project where a Thing would have a unique 10 digit Key, in addition to the standard auto incrementing ID integerfield. I use a simple random number function to create it. [I'm sure there's a better way to do this too] When a Thing is created, a 10 digit Key is created. I use the .validate_unique() to check th...
It is impossible to identify a user or request as unique since duping is trivial. However, there are a handful of methods that, combined, can hamper cheating attempts and give a user quasi-unique status. I know of the following: IP Address - store the IP address of each visitor in a database of some sort Can be faked Multiple comput...
Hi guys!! I need to generate a string using PHP, it need to be unique and need to be from 4 to 8 characters (the value of a variable). I thought I can use crc32 hash but I can't decide how many characters, but sure it will be unique. In the other hand only create a "password generator" will generate duplicated string and checking the v...
use Uniq; my @test1 = ("0","0","A"); my @test2 = ("1","1","A"); @test1 = uniq sort @test1; @test2 = uniq sort @test2; print "$_" for @test1; print "\n"; print "$_" for @test2; print "\n"; returns : 00A 1A It should be 0A or not?! Thank you ...
Here is how I created an array: @companies_with_email = Company.contact_emails_date_sent_gt(@monday). contact_emails_date_sent_lt(@friday). find(:all, :select => "distinct companies.* ") || [] @companies_with_call = Company.contact_calls_date_sent_gt(@monday). ...
scratching my head over this. i have 350 strings average 90 chars long, all strings are unique. Now, i wanna generate a unique id for each string. i tried the sum of chars in the string wich gave two doubles, the returned sum is not unique enough. Anybody any idea how to approach this? I thought of hash(), is that the best solution? a...
is any ability to create keys like in youtube (nWChTnkVdKE)? ...
I have a parent/child relationship via our users table, with models as such: class User < ActiveRecord::Base # Parents relationship has_many :children_parents, :class_name => "ParentsChild", :foreign_key => "child_id", :dependent => :destroy has_many :parents, :through => :children_parents # Children relatiopnship has_many :...
I have an array with custom objects. Each array item has a field named "name". Now I want to remove duplicate entries based on this name value. How should I go about achieving this. Thanks in advance. ...
In a web application if a user check the Remember Me box I'm gonna create a cookie and save it in database and assign it to user (long-life cookie). On any page request (page_load) I check this cookie (if session is null) and ask DAL for user object. If I use GUID it would be unique but the question is if a user can guess the pattern may...
Hey guys, I've got a model that has an id that isn't unique. Each model also has a date. I would like to return all results but only the most recent of each row that shares ids. The model looks something like this: class MyModel(models.Model): my_id = models.PositiveIntegerField() date = models.DateTimeField() title = model...
Hi guys simple question, but can't find anything. Thanks ...
Is there any possibility to create unique column constraint using DDLUtils ? I have not found it in API. Is there other solution then altering table (add unique) just a second after its creation on my own ? ...