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What is `params.require(:person).permit(:name, :age)` doing in Rails 4?
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205
The params in a controller looks like a Hash, but it's actually an instance of ActionController:...
Convert String to equivalent Enum value
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Hope you realise, java.util.Enumeration is different from the Java 1.5 Enum types.
You can simply use YourEnum.valueOf("String") to get the equivalent enum type.
Thus if your enum is defined as so:
public enum Day {
SUNDAY, MONDAY, TUESDAY, WEDNESDAY,
THURSDAY, FRIDAY, SATURDAY
}
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What does “abstract over” mean?
...lue * b.value)
}
val sumOf123 = mapReduce(List(1,2,3), Sum)
val productOf456 = mapReduce(List(4,5,6), Product)
We have abstracted over monoids and foldables.
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Are table names in MySQL case sensitive?
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Split string based on a regular expression
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answered Jun 11 '12 at 5:44
jamylakjamylak
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Changing selection in a select with the Chosen plugin
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215
From the "Updating Chosen Dynamically" section in the docs: You need to trigger the 'chosen:upd...
const vs constexpr on variables
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357
I believe there is a difference. Let's rename them so that we can talk about them more easily:...
Why does Haskell's “do nothing” function, id, consume tons of memory?
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135
We know the type of id,
id :: a -> a
And when we specialize this for id id, the left copy ...
Media Queries - In between two widths
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answered Dec 23 '12 at 5:19
SampsonSampson
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How to make all Objects in AWS S3 bucket public by default?
... select "Generate Policy"
Copy the text example:
{
"Id": "Policy1397632521960",
"Statement": [
{
"Sid": "Stmt1397633323327",
"Action": [
"s3:GetObject"
],
"Effect": "Allow",
"Resource": "arn:aws:s3:::bucketnm/*",
"Principal": {
"AWS": [
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