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How do I compare two DateTime objects in PHP 5.2.8?
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The following seems to confirm that there are comparison operators for the DateTime class:
dev:~# php
<?php
date_default_timezone_set('Europe/London');
$d1 = new DateTime('2008-08-03 14:52:10');
$d2 = new DateTime('2008-01-03 11:11:10');
var_dump($d1 == $d2);
var_dump($d1 > $d2);...
How can I show hidden files (starting with period) in NERDTree?
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Press I (Shift+i) to toggle hidden files in the NERDTree explorer window.
To enable this behavior by default, add this line to your .vimrc file:
let NERDTreeShowHidden=1
For more detail, access the NERDTree help file :help NERD_tree.txt and search for "hidden".
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Why can lambdas be better optimized by the compiler than plain functions?
... them to a function template will instantiate a new function specifically for that object. The compiler can thus trivially inline the lambda call.
For functions, on the other hand, the old caveat applies: a function pointer gets passed to the function template, and compilers traditionally have a lo...
Should I implement __ne__ in terms of __eq__ in Python?
..._eq__:
There are no implied relationships
among the comparison operators. The
truth of x==y does not imply that x!=y
is false. Accordingly, when defining
__eq__(), one should also define __ne__() so that the operators will behave as expected.
In a lot of cases (such as this one), it wi...
What is the rationale behind having companion objects in Scala?
Is there a case where a companion object (singleton) for a class is needed? Why would I want to create a class, say Foo and also create a companion object for it?
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Override valueof() and toString() in Java enum
The values in my enum are words that need to have spaces in them, but enums can't have spaces in their values so it's all bunched up. I want to override toString() to add these spaces where I tell it to.
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Representing graphs (data structure) in Python
...t data structure (e.g. dicts/tuples/dict(tuples)) will be fast but also memory efficient? One must be able to do various graph operations on it.
As pointed out, the various graph representations might help. How does one go about implementing them in Python? As for the libraries, this ques...
Compare version numbers without using split function
...ystem.version.aspx
It has an IComparable interface. Be aware this won't work with a 5-part version string like you've shown (is that really your version string?). Assuming your inputs are strings, here's a working sample with the normal .NET 4-part version string:
static class Program
{
stat...
Is it OK to use Gson instance as a static field in a model bean (reuse)?
...e Gson instances? Do you instantiate one every time you need to serialize? Or use a threadlocal pool?
– Dilum Ranatunga
Oct 29 '13 at 19:19
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Opposite of String.Split with separators (.net)
....Net? That is, to combine all the elements of an array with a given separator.
2 Answers
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