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How do I get around type erasure on Scala? Or, why can't I get the type parameter of my collections?
... list of ints!")
}
You can also do this using ClassTags (which saves you from having to depend on scala-reflect):
import scala.reflect.{ClassTag, classTag}
def matchList2[A : ClassTag](list: List[A]) = list match {
case strlist: List[String @unchecked] if classTag[A] == classTag[String] => p...
Changing website favicon dynamically
...is close to what I'm looking for, but how would I get the appropriate HREF from the database. I suppose I'll have to do a server lookup from javascript, but I don't want it to get too complicated. Thanks for the tip.
– SqlRyan
Nov 4 '08 at 4:57
...
Can scripts be inserted with innerHTML?
...ng something like innerHTML? Is there a way to do this with document.write from within a function?
– Craig
Jul 29 '09 at 1:23
5
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Grab a segment of an array in Java without creating a new array on heap
...
I think a lot of people want to create a sub array from an array and aren't to worried that it uses some more memory. They come across this question and get the answer they want - so please don't delete as it's useful - I think that's ok.
– The Lonely Co...
Accessing constructor of an anonymous class
...
From the Java Language Specification, section 15.9.5.1:
An anonymous class cannot have an
explicitly declared constructor.
Sorry :(
EDIT: As an alternative, you can create some final local variables, and/or include a...
Purpose of returning by const value? [duplicate]
...ve non-const operation on an object, returning by const-value prevents you from accidentally calling this operation on a temporary. Imagine that + returned a non-const value, and you could write:
(a + b).expensive();
In the age of C++11, however, it is strongly advised to return values as non-con...
How can I use Homebrew to install both Python 2 and 3 on Mac?
...etween versions.
Here is what I did to set up:
STEP1:
Remove all pythons from your mac
brew uninstall --ignore-dependencies --force python
sudo rm -rf ~/miniconda3/
sudo rm -rf ~/.conda/
Remove the following from ~/.bash_profile
export PATH="/Users/ishandutta2007/miniconda3/bin:$PATH"
...
How to “return an object” in C++?
...), and find what you can do to fix it. It likely won't be returning things from functions.
That said, if you're dead set on writing like that, you'd probably want to do the out parameter. It avoids dynamic memory allocation, which is safer and generally faster. It does require you have some way t...
Python - abs vs fabs
...n [1]: %timeit abs(5)
10000000 loops, best of 3: 86.5 ns per loop
In [2]: from math import fabs
In [3]: %timeit fabs(5)
10000000 loops, best of 3: 115 ns per loop
In [4]: %timeit abs(-5)
10000000 loops, best of 3: 88.3 ns per loop
In [5]: %timeit fabs(-5)
10000000 loops, best of 3: 114 ns per lo...
Android Preferences: How to load the default values when the user hasn't used the preferences-screen
...
this question is similar to mine:
initialize-preferences-from-xml-in-main-activity
Just use this code in onCreate method:
PreferenceManager.setDefaultValues(this, R.xml.preference, false);
It will load your preferences from XML, and last parameter (readAgain) will guarantee that u...