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What is The Rule of Three?
...(nor the destructor) ourselves,
these are implicitly defined for us. Quote from the standard:
The [...] copy constructor and copy assignment operator, [...] and destructor are special member functions.
[ Note: The implementation will implicitly declare these member functions
for some class types wh...
C++: Rounding up to the nearest multiple of a number
... + multiple - 1) / multiple) * multiple;
}
This works like rounding away from zero for negative numbers
EDIT: Version that works also for negative numbers
int roundUp(int numToRound, int multiple)
{
assert(multiple);
int isPositive = (int)(numToRound >= 0);
return ((numToRound + ...
PHP script to loop through all of the files in a directory?
...
You can use the DirectoryIterator. Example from php Manual:
<?php
$dir = new DirectoryIterator(dirname(__FILE__));
foreach ($dir as $fileinfo) {
if (!$fileinfo->isDot()) {
var_dump($fileinfo->getFilename());
}
}
?>
...
range over interface{} which stores a slice
...
what if I want to get value of interface field from slice of interface without any struct. I have tried this solution but it is limited to get interface reference only from slice not the actual values of fields.
– Amandeep kaur
Sep 2...
How to retrieve absolute path given relative
.../.bashrc
To avoid expanding symlinks, use realpath -s.
The answer comes from "bash/fish command to print absolute path to a file".
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Count number of days between two dates
.... In fact since they are using Rails it's most likely the dates are coming from ActiveRecord which will automatically cast them to date objects. The given text is identical to Date object representation as well, making it highly likely it's come from a native source.
– Andrew F...
Installing PIL with pip
...
Install
pip install Pillow
Then, Just import in your file like,
from PIL import Image
I am using windows. It is working for me.
NOTE:
Pillow is a functional drop-in replacement for the Python Imaging
Library. To run your existing PIL-compatible code with Pillow, it
needs to...
Why is the String class declared final in Java?
From when I learned that the class java.lang.String is declared as final in Java, I was wondering why that is. I didn't find any answer back then, but this post: How to create a replica of String class in Java? reminded me of my query.
...
/etc/apt/sources.list" E212: Can't open file for writing
...sion. I ended up writing out to a temporary file in /var and copying that from another ssh instance over to my home directory.
– Ross Aiken
Apr 4 '13 at 19:54
...
What does the question mark in Java generics' type parameter mean?
This is a small snippet of code taken from some of the examples that accompany the Stanford Parser. I've been developing in Java for about 4 years, but have never had a very strong understanding of what this style of code is supposed to indicate.
...