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What's the difference between OpenID and OAuth?
...s authentication system as a way to outsource user authentication for your application. The only downside I can see over OpenID is that you have to implement it on a per-site basis. On the plus side though, it integrates with Android properly.
– Timmmm
Jul 23 '...
How to fix the Hibernate “object references an unsaved transient instance - save the transient insta
...xml) or cascade=CascadeType.ALL (if using annotations) on your collection mapping.
This happens because you have a collection in your entity, and that collection has one or more items which are not present in the database. By specifying the above options you tell hibernate to save them to the datab...
What is the difference between D3 and jQuery?
...is usually used for data visualization but jQuery is used for creating web apps. D3 has many data visualization extensions and jQuery has many web app plugins.
Both are JavaScript DOM manipulation libraries, have CSS selectors and fluent API and are based on web standards which makes them look simil...
'Microsoft.ACE.OLEDB.12.0' provider is not registered on the local machine
...ne, then all the sudden it started getting this error. SO what could have happened to cause this? No code changed.
– eetawil
Jan 25 '16 at 14:21
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Duplicate and rename Xcode project & associated folders [closed]
... will automagically re-associate all your files, and they should no longer appear red within the Xcode navigation pane.
In your project / targets build settings, search for the old folder name and manually rename any occurrences you find. Normally there is one for the prefix.pch and one for the...
Why do we always prefer using parameters in SQL statements?
...txtMoney.Text): SQL Server money is Decimal in .NET: SQL Server Data Type Mappings. And the parameter name needs the "@", as in "@salary".
– Andrew Morton
Mar 16 '17 at 19:30
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Select DISTINCT individual columns in django?
...ee for yourself.
# The query would look something like
# SELECT DISTINCT "app_productorder"."category" FROM "app_productorder"
There are a couple of things to remember here. First, this will return a ValuesQuerySet which behaves differently from a QuerySet. When you access say, the first element ...
How do I wrap link_to around some html ruby code?
...e the case that the HTML is being generated from somewhere within your own app which you know to be safe. Still, it's best to avoid this in 99% of situations. (Not to mention the above code has a mistake anyway, it should start with <%=, not <%.)
– GMA
Oc...
What is the difference between HTTP and REST?
... communication, usually used to communicate with internet resources or any application with a web browser client.
REST means that the main concept you are using while designing the application is the Resource: for each action you want to perform you need to define a resource on which you usually do...
Cannot push to Heroku because key fingerprint
I am new to Rails, and I was trying to deploy a very simple app to Heroku. This is the second app that I deploy, and the first one I was able to do it just fine. However I am having some issues with this one. Whenever I " git push heroku master ", I get this error:
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