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Rails: Using build with a has_one association in rails
In this example, I create a user with no profile , then later on create a profile for that user. I tried using build with a has_one association but that blew up. The only way I see this working is using has_many . The user is supposed to only have at most one profile .
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Diff output from two programs without temporary files
Say I have too programs a and b that I can run with ./a and ./b .
6 Answers
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What is the difference between persist() and merge() in JPA and Hibernate?
What is the difference between persist() and merge() in Hibernate?
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Add margin above top ListView item (and below last) in Android
This is a pretty fine question about the layout of items in a ListView in Android.
5 Answers
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Have a fixed position div that needs to scroll if content overflows
I have actually two issues, but lets resolve the primary issue first as I believe the other is easier to address.
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What is the difference between '>' and a space in CSS selectors?
...nly select B that are direct children to A (that is, there are no other elements inbetween).
A B will select any B that are inside A, even if there are other elements between them.
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Create list of single item repeated N times
...te a series of lists, all of varying lengths. Each list will contain the same element e , repeated n times (where n = length of the list).
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Django-DB-Migrations: cannot ALTER TABLE because it has pending trigger events
I want to remove null=True from a TextField:
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Anonymous recursive PHP functions
Is it possible to have a PHP function that is both recursive and anonymous? This is my attempt to get it to work, but it doesn't pass in the function name.
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What does it mean for a data structure to be “intrusive”?
I've seen the term intrusive used to describe data structures like lists and stacks, but what does it mean?
2 Answers
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