scratching my head over this. i have 350 strings average 90 chars long, all strings 开发者_StackOverflow社区are unique.
I have a parent/child relationship via our users table, with models as such: class User < ActiveRecord::Base
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
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 sta
I need to generate a string using PHP, it need to be unique and need to be from开发者_开发问答 4 to 8 characters (the value of a variable).
I want to get only the rows with a unique value fo开发者_运维技巧r a certain field (2 actually).
I am trying out Google App Engine Java, however the absence of a unique constraint is making things difficult.
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\" }
I am curious what would be an efficient way of uniq开发者_如何学Cuifying such data objects: testdata =[ [\'9034968\', \'ETH\'], [\'14160113\', \'ETH\'], [\'9034968\', \'ETH\'], [\'11111\', \'NOT\'], [
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