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Private and protected constructor in Scala
...vate/protected by inserting the appropriate keyword between the class name and the parameter list, like this:
class Foo private () {
/* class body goes here... */
}
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Is there a literal notation for an array of symbols?
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Modifier Meaning
%q[ ] Non-interpolated String (except for \\ \[ and \])
%Q[ ] Interpolated String (default)
%r[ ] Interpolated Regexp (flags can appear after the closing delimiter)
%s[ ] Non-interpolated Symbol
%w[ ] Non-interpolated Array of words, separated by wh...
How do I check if a given string is a legal/valid file name under Windows?
...ionality in my application. A user can type a destination filename pattern and (after replacing some wildcards in the pattern) I need to check if it's going to be a legal filename under Windows. I've tried to use regular expression like [a-zA-Z0-9_]+ but it doesn't include many national-specific c...
Using a Single Row configuration table in SQL Server database. Bad idea?
...ping a shopping cart application I've found that I needed to save settings and configurations based on the administrator's preferences and requirements. This information can be anything from company information, Shipping account IDs, PayPal API keys, notification preferences, etc.
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How to sort an array by a date property
...plest Answer
array.sort(function(a,b){
// Turn your strings into dates, and then subtract them
// to get a value that is either negative, positive, or zero.
return new Date(b.date) - new Date(a.date);
});
More Generic Answer
array.sort(function(o1,o2){
if (sort_o1_before_o2) return -1...
Deleting Files using Git/GitHub
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Thank you. And I had just written alias in bash to do the above. Amazing.
– Zack
Feb 20 '10 at 16:36
12
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C# nullable string error
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System.String is a reference type and already "nullable".
Nullable<T> and the ? suffix are for value types such as Int32, Double, DateTime, etc.
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Are PHP Variables passed by value or by reference?
...ave an argument to a function always passed by reference, prepend an ampersand (&) to the argument name in the function definition.
<?php
function add_some_extra(&$string)
{
$string .= 'and something extra.';
}
$str = 'This is a string, ';
add_some_extra($str);
echo $str; // out...
What is the difference between isinstance('aaa', basestring) and isinstance('aaa', str)?
...ython versions prior to 3.0 there are two kinds of strings "plain strings" and "unicode strings". Plain strings (str) cannot represent characters outside of the Latin alphabet (ignoring details of code pages for simplicity). Unicode strings (unicode) can represent characters from any alphabet includ...
What is the difference between 'typedef' and 'using' in C++11?
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All standard references below refers to N4659: March 2017 post-Kona working draft/C++17 DIS.
Typedef declarations can, whereas alias declarations cannot, be used as initialization statements
But, with the first two non-template e...