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Can table columns with a Foreign Key be NULL?
...insert a DEFAULT element in the other table. For example, any reference to uuid=00000000-0000-0000-0000-000000000000 on the other table would indicate no action. You also need to set all the values for that id to be "neutral", e.g. 0, empty string, null in order to not affect your code logic.
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SVN repository backup strategies
...switch the slave into primary position quite easily (only had to reset the UUID on the slave repository to the original).
Another benefit is that the sync can be run by a middle-man, rather than as a task on either server. I've had a client to two VPNs sync a repository between them.
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How to use regex with find command?
I have some images named with generated uuid1 string. For example 81397018-b84a-11e0-9d2a-001b77dc0bed.jpg. I want to find out all these images using "find" command:
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How to get a random number in Ruby
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If you're not only seeking for a number but also hex or uuid it's worth mentioning that the SecureRandom module found its way from ActiveSupport to the ruby core in 1.9.2+. So without the need for a full blown framework:
require 'securerandom'
p SecureRandom.random_number(100) #...
How to do case insensitive string comparison?
... consider locale but if you are comparing machine generated values such as UUID then you might not. This why I use following function in my utils library (note that type checking is not included for performance reason).
function compareStrings (string1, string2, ignoreCase, useLocale) {
if (ign...
Best way to create unique token in Rails?
...lient id" to Google Analytics' measurement protocol. It's supposed to be a UUID, but I just take the first 32 chars of the hexdigest for any given IP.
– thekingoftruth
Jan 16 '15 at 19:22
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How to set a default value for a datetime column to record creation time in a migration?
... @SandipSubedi I realized that 5 minutes after my comment. Just like with uuid generation. Thanks!
– courtsimas
Aug 5 '19 at 19:07
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How do you serialize a model instance in Django?
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this fails with UUID fields, should be clear otherwise
– Alvin
Mar 7 '17 at 23:21
3
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unique object identifier in javascript
...put there next id of a stream of unique ids like
id = elem[ expando ] = ++uuid;
I'd suggest you use the same method as John Resig obviously knows all there is about JavaScript and his method is based on all that knowledge.
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How to get svn remote repository URL?
...t/foo.c
Repository Root: http://svn.red-bean.com/repos/test
Repository UUID: 5e7d134a-54fb-0310-bd04-b611643e5c25
Revision: 4417
Node Kind: file
Schedule: normal
Last Changed Author: sally
Last Changed Rev: 20
Last Changed Date: 2003-01-13 16:43:13 -0600 (Mon, 13 Jan 2003)
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