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Applicatives compose, monads don't
What does the above statement mean? And when is one preferable to other?
5 Answers
5
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I want to get the type of a variable at runtime
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So, strictly speaking, the "type of a variable" is always present, and can be passed around as a type parameter. For example:
val x = 5
def f[T](v: T) = v
f(x) // T is Int, the type of x
But depending on what you want to do, that won't help you. For instance, may want not to know what is ...
How to get the Display Name Attribute of an Enum member via MVC razor code?
...ength > 0) ? descriptionAttributes[0].Name : value.ToString();
}
}
And then you can use it in your view as following:
<ul>
@foreach (var value in @EnumHelper<UserPromotion>.GetValues(UserPromotion.None))
{
if (value == Model.JobSeeker.Promotion)
{
...
Reordering of commits
I'm currently working on a branch and want some commits to merge into other branches:
5 Answers
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Cast Object to Generic Type for returning
...y way to use .isArray() inside convertInstanceOfObject() in the someObject and extract the class (as the intArrayType) from it by reflection and then call an internal private method passing those? But even doing this, I must to create an empty array and pass it in the public method, right?
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Difference between reduce and foldLeft/fold in functional programming (particularly Scala and Scala
Why do Scala and frameworks like Spark and Scalding have both reduce and foldLeft ? So then what's the difference between reduce and fold ?
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How to use int.TryParse with nullable int? [duplicate]
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Like Daniel's code, but fixed in terms of the second argument, trimming, and avoiding comparisons with Boolean constants:
int tmp;
if (!int.TryParse(strValue.Trim(), out tmp))
{
break;
}
intVal = tmp;
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How to create a MySQL hierarchical recursive query
... (select @pv := '19') initialisation
where find_in_set(parent_id, @pv)
and length(@pv := concat(@pv, ',', id))
Here is a fiddle.
Here, the value specified in @pv := '19' should be set to the id of the parent you want to select all the descendants of.
This will work also if a parent has m...
What is the JavaScript equivalent of var_dump or print_r in PHP? [duplicate]
...is with angular) but Amos has a function that outputs a string immediately and isn't affected by these problems: stackoverflow.com/a/11315561/1403755
– TorranceScott
Aug 14 '14 at 21:38
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MAC addresses in JavaScript
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Using Java (with a signed applet)
Using signed Javascript, which in FF (and Mozilla in general) gets higher privileges than normal JS (but it is fairly complicated to set up)
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