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When is memoization automatic in GHC Haskell?
...situations. For example, consider the function
f = \x -> let y = [1..30000000] in foldl' (+) 0 (y ++ [x])
GHC might notice that y does not depend on x and rewrite the function to
f = let y = [1..30000000] in \x -> foldl' (+) 0 (y ++ [x])
In this case, the new version is much less effici...
What is the default form HTTP method?
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georgeawg
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answered Feb 22 '10 at 21:42
Drew WillsDrew Wills
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How to give System property to my test via Gradle and -D
...sn't appear)
– CLOVIS
Jul 9 '18 at 20:09
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XPath OR operator for different nodes
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edited Apr 10 '17 at 15:56
dur
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a...
Replace words in a string - Ruby
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506
sentence.sub! 'Robert', 'Joe'
Won't cause an exception if the replaced word isn't in the sent...
How to sort Counter by value? - python
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edited May 20 at 9:22
answered Jan 6 '14 at 13:05
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Are non-synchronised static methods thread safe if they don't modify static class variables?
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This method is 100% thread safe, it would be even if it wasn't static. The problem with thread-safety arises when you need to share data between threads - you must take care of atomicity, visibility, etc.
This method only operates on parame...
Is there a better way to dynamically build an SQL WHERE clause than by using 1=1 at its beginning?
...nditions = new List<string>();
if (condition1) conditions.Add("Col1=0");
//...
if (conditions.Any())
Query += " WHERE " + string.Join(" AND ", conditions.ToArray());
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Retain precision with double in Java
...sult of 5.6 + 5.8.
When requiring a value that is exact, such as 1.5 or 150.1005, you'll want to use one of the fixed-point types, which will be able to represent the number exactly.
As has been mentioned several times already, Java has a BigDecimal class which will handle very large numbers and v...
DBMS_OUTPUT.PUT_LINE not printing
...unlimited]. So you'd do something like
SQL> set serveroutput on size 30000;
SQL> exec print_actor_quotes( <<some value>> );
In SQL Developer, you'd go to View | DBMS Output to enable the DBMS Output window, then push the green plus icon to enable DBMS Output for a particular se...