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Any reason why scala does not explicitly support dependent types?
...here are path dependent types and I think it is possible to express almost all the features of such languages as Epigram or Agda in Scala, but I'm wondering why Scala does not support this more explicitly like it does very nicely in other areas (say, DSLs) ?
Anything I'm missing like "it is not ne...
C++, copy set to vector
...hold the input range.
std::back_inserter creates an output iterator that calls push_back on a container for each element, so each element is inserted into the container. Alternatively, you could have created a sufficient number of elements in the std::vector to hold the range being copied:
std::v...
Why does the JVM still not support tail-call optimization?
Two years after does-the-jvm-prevent-tail-call-optimizations , there seems to be a prototype implementation and MLVM has listed the feature as "proto 80%" for some time now.
...
How can I check for an empty/undefined/null string in JavaScript?
...n do
if (strValue) {
//do something
}
If you need to check specifically for an empty string over null, I would think checking against "" is your best bet, using the === operator (so that you know that it is, in fact, a string you're comparing against).
if (strValue === "") {
//...
}
...
Problems with contenttypes when loading a fixture in Django
...ill use a more durable representation of foreign keys. In django they are called "natural keys". For example:
Permission.codename is used in favour of Permission.id
User.username is used in favour of User.id
Read more: natural keys section in "serializing django objects"
Some other useful argum...
Error: Configuration with name 'default' not found in Android Studio
...
Add your library folder in your root location of your project and copy all the library files there. For ex YourProject/library then sync it and rest things seems OK to me.
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Putting HTML inside Html.ActionLink(), plus No Link Text?
...need to use ajax or some feature which you cannot use when making link manually (using tag):
<%= Html.ActionLink("LinkTextToken", "ActionName", "ControllerName").ToHtmlString().Replace("LinkTextToken", "Refresh <span class='large sprite refresh'></span>")%>
You can use any text...
Does Internet Explorer 8 support HTML 5?
...
so the answer is that for all fits and purposes, IE8 does not support html5 - just some randome bits and pieces of it. Which makes using HTML5 (as in HTML markup, not scripting API's) moot.
– Roland Tepp
Sep 7 '...
Remove Safari/Chrome textinput/textarea glow
...
Edit (11 years later): Don't do this unless you're going to provide a fallback to indicate which element is active. Otherwise, this harms accessibility as it essentially removes the indication showing which element in a document has focus. Imagine being a keyboard user and not really knowing wha...
Sorted collection in Java
... using Collections.sort(...) is that this will maintain a partial order at all times, with O(log(n)) insertion performance, by using a heap data structure, whereas inserting in a sorted ArrayList will be O(n) (i.e., using binary search and move).
However, unlike a List, PriorityQueue does not suppo...