UUID
Is COMB GUID a good idea with Rails 3.1 if I use GUIDs for primary keys?
I\'m using Rails 3.1 with PostgreSQL 8.4. Let\'s assume I want/need to use GUID primary keys. One potential drawback is index fragmentation. In MS SQL, a recommended solution for that is to use specia[详细]
2023-04-12 20:17 分类：问答Where do UUID namespaces come from?
The UUID specification defines 4 predefined namespaces which it describes as "potentially interesting" - meaning among other things, "if other people have generated UUIDs in this namesp[详细]
2023-04-11 23:48 分类：问答Generate a random uuid in a maven archetype
I need to create a random UUID and write it to the generated project. Currently, I ask the user to fill in a random UUID each time a project is created, and I would like this to be done automatically.[详细]
2023-04-09 18:09 分类：问答Should I use Global ID's or find another solution to my Notification system?
So 开发者_开发百科I have nearly finished my notification system, and just before I am about to implement reCAPTCHA, I test what happens if I spam the notifications.[详细]
2023-04-09 10:37 分类：问答Convert iPhone unique identifier to integer
I have made a web service that gets an integer as a unique identifier for a Phone. Later, i realised that an iPhone UID is an NSstring in that format: 5DE31FA12-XXXXX-XXXXX-XXXXXXX. So i would like to[详细]
2023-04-09 09:48 分类：问答What is the best way to secure/link an Air Application to a specified system
I have to build (obviously using flex) an AIR application that must be linked to a given hardware (i.e. hard-disk), so it can\'t be copied elsewhere..[详细]
2023-04-09 08:34 分类：问答Store UUID in sqlite manager
I am a newbie here. I am trying to generate UUIDs using the following code开发者_如何学JAVA.. - (NSString *)GetUUID[详细]
2023-04-07 02:58 分类：问答cassandra-cli: unable to coerce 'allias' to version 1 UUID
I\'m triyng to create a column family with TimeUUIDType as name of row: create column family users with column_type = \'Standard\'[详细]
2023-04-06 12:50 分类：问答Change I/O scheduler not using sd* to refer to the disk
I\'d like to change the I/O scheduler to deadline for one particular disk on my system. All resources I found, however, use methods I can not use because they either refer to the disk using sd* (sda,[详细]
2023-04-02 21:19 分类：问答Does Mac OS UUID depend on hard disk?
I use this code to get UUID on Mac OS NSString* getComputerId() { io_registry_entry_t ioRegistryRoot = IORegistryEntryFromPath(kIOMasterPortDefault, \"IOService:/\");[详细]
2023-04-01 10:16 分类：问答
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