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How to create the most compact mapping n → isprime(n) up to a limit N?
...across, yes, but its not an implementation of AKS. The AKS system is much newer than the algorithm outlined. It is arguably more efficient, but is somewhat difficult to implement, imo, on account of potentially astronomically large factorials / binomial coefficients.
– CogitoE...
Error - Unable to access the IIS metabase
...d to try this solution which was a quick fix.
– BraveNewMath
Apr 1 '15 at 7:25
Ensure IIS Admin service is started and...
Javascript Object push() function
...
You must make var tempData = new Array();
Push is an Array function.
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Java: function for arrays like PHP's join()?
...tarting from Java8 it is possible to use String.join().
String.join(", ", new String[]{"Hello", "World", "!"})
Generates:
Hello, World, !
Otherwise, Apache Commons Lang has a StringUtils class which has a join function which will join arrays together to make a String.
For example:
StringUtil...
How to convert a String into an ArrayList?
...
Try something like
List<String> myList = new ArrayList<String>(Arrays.asList(s.split(",")));
Arrays.asList documentation
String.split documentation
ArrayList(Collection) constructor documentation
Demo:
String s = "lorem,ipsum,dolor,sit,amet";
List<...
How can I get a web site's favicon?
...ogle.com/s2/favicons which will do all of the heavy lifting:
var client = new System.Net.WebClient();
client.DownloadFile(
@"http://www.google.com/s2/favicons?domain=stackoverflow.com",
"stackoverflow.com.ico");
s...
What is the purpose of the reader monad?
...rms (actually it will be closures because we want to do static scoping).
newtype Env = Env ([(String, Closure)])
type Closure = (Term, Env)
When we are done, we should get out a value (or an error):
data Value = Lam String Closure | Failure String
So, let's write the interpreter:
interp' :...
How Scalable is SQLite? [closed]
... of SQLite and how relatively bad the performance was. I expect that those new to the platform will encounter similar problems, and I would hope that they can identify with the first paragraph, then read the following edits and realize that there are ways of speeding up SQLite to have acceptable per...
Rails find_or_create_by more than one attribute?
...e record right away)
Edit: The above method is deprecated in Rails 4. The new way to do it will be:
GroupMember.where(:member_id => 4, :group_id => 7).first_or_create
and
GroupMember.where(:member_id => 4, :group_id => 7).first_or_initialize
Edit 2: Not all of these were factored ...
Start an Activity with a parameter
I'm very new on Android development.
5 Answers
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