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Facebook database design?
...able that holds the UserID and then the UserID of the friend (we will call it FriendID). Both columns would be foreign keys back to the Users table.
Somewhat useful example:
Table Name: User
Columns:
UserID PK
EmailAddress
Password
Gender
DOB
Location
TableName: Friends
Co...
Setting Environment Variables for Node to retrieve
I'm trying to follow a tutorial and it says:
16 Answers
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Finding duplicates in O(n) time and O(1) space
...nput: Given an array of n elements which contains elements from 0 to n-1, with any of these numbers appearing any number of times.
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What is @ModelAttribute in Spring MVC?
...property of the Model object (the M in MVC ;)
so let's say we have a form with a form backing object that is called "Person"
Then you can have Spring MVC supply this object to a Controller method by using the @ModelAttribute annotation:
public String processForm(@ModelAttribute("person") Person per...
What is JAXB and why would I use it? [closed]
...ee what Stack Overflow users think the use case is for JAXB and what makes it a good or a bad solution for that case.
9 Ans...
What is the difference between --save and --save-dev?
...--save-dev is used to save the package for development purpose.
Example: unit tests, minification..
--save is used to save the
package required for the application to run.
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What's the yield keyword in JavaScript?
...a "yield" keyword in JavaScript, but I found very poor documentation about it. Can someone explain me (or recommend a site that explains) its usage and what it is used for?
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Would it be beneficial to begin using instancetype instead of id?
...at, as far as I can see, replaces id as a return type in -alloc and init .
4 Answers
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When do you use the Bridge Pattern? How is it different from Adapter pattern?
... the Bridge Pattern in a real world application? If so, how did you use it? Is it me, or is it just the Adaptor Pattern with a little dependency injection thrown into the mix? Does it really deserve its own pattern?
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@property retain, assign, copy, nonatomic in Objective-C
..."atomic". (BTW: The book I read is the BNR "iOS Programming" book.)
readwrite vs. readonly
- "readwrite" is the default. When you @synthesize, both a getter and a setter will be created for you. If you use "readonly", no setter will be created. Use it for a value you don't want to ever change after...