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Avoiding memory leaks with Scalaz 7 zipWithIndex/group enumeratees
...ess1.chunk(4)
pipe process1.fold(0L) {
(c, vs) => c + vs.map(_._1.length.toLong).sum
}).runLast.run
This should work with any value for the n parameter (provided you're willing to wait long enough) -- I tested with 2^14 32MiB arrays (i.e., a total of half a TiB of memory allocated ...
Delete/Reset all entries in Core Data?
...NSEntityDescription entityForName:entityDescription inManagedObjectContext:_managedObjectContext];
[fetchRequest setEntity:entity];
NSError *error;
NSArray *items = [_managedObjectContext executeFetchRequest:fetchRequest error:&error];
[fetchRequest release];
for (NSManage...
How to ignore deprecation warnings in Python
.../eddyp/virtualenv/lib/python2.6/site-packages/Twisted-8.2.0-py2.6-linux-x86_64.egg/twisted/persisted/sob.py:12:
DeprecationWarning: the md5 module is deprecated; use hashlib instead import os, md5, sys
/home/eddyp/virtualenv/lib/python2.6/site-packages/Twisted-8.2.0-py2.6-linux-x86_64.egg/twisted/p...
What does ':' (colon) do in JavaScript?
... is a float. Pretty sur that's what that means.
– Sal_Vader_808
May 14 '17 at 11:08
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`from … import` vs `import .` [duplicate]
... for simplicity or to avoid masking built ins:
from os import open as open_
# lets you use os.open without destroying the
# built in open() which returns file handles.
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improve this answer...
Importing variables from another file?
...
Did you have a __init__.py file? See here for more details.
– J0ANMM
Sep 28 '16 at 7:21
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Templated check for the existence of a class member function?
...truct Generic {};
// SFINAE test
template <typename T>
class has_helloworld
{
typedef char one;
struct two { char x[2]; };
template <typename C> static one test( decltype(&C::helloworld) ) ;
template <typename C> static two test(...);
public:
enum...
querySelector and querySelectorAll vs getElementsByClassName and getElementById in JavaScript
...at is a member of the foo class: .foo li
document.querySelector("#view:_id1:inputText1") it doesn't work. But writing document.getElementById("view:_id1:inputText1") works. Any ideas why?
The : character has special meaning inside a selector. You have to escape it. (The selector escape charact...
How do I check if a file exists in Java?
...m there is an issue with stale file handles: bugs.java.com/bugdatabase/view_bug.do?bug_id=5003595 It's kind of obscure, but has been the cause of some frustrating bugs in production code before.
– CAW
Mar 17 '17 at 22:17
...
Scala: join an iterable of strings
...,"): String = list match { case head :: tail => tail.foldLeft(head)(_ + delim + _) case Nil => "" }
– Davos
Jul 11 '17 at 14:37
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