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How do I perform a Perl substitution on a string while keeping the original?
In Perl, what is a good way to perform a replacement on a string using a regular expression and store the value in a different variable, without changing the original?
...
Differences between Java 8 Date Time API (java.time) and Joda-Time
...er to use getDayOfYear() instead of get(DAY_OF_YEAR). This causes a lot of extra methods compared with java.util.Calendar (although latter is not type-safe at all due to excessive use of ints).
Performance
See the other answer by @OO7 pointing to the analysis of Mikhail Vorontsov although point 3 ...
How do I pass JavaScript variables to PHP?
...() + (days * 24 * 60 * 60 * 1000));
expires = "; expires=" + date.toGMTString();
}
else {
expires = "";
}
document.cookie = escape(name) + "=" + escape(value) + expires + "; path=/";
}
And then read it with PHP:
<?PHP
$_COOKIE["height"];
?>
It's not a pretty solution, b...
What's the $unwind operator in MongoDB?
...nds array produce an output document. Now, in this example, our values are strings. But, regardless of the type of value for the elements in an array, unwind will produce an output document for each one of these values, such that the field in question will have just that element. In the case of fund...
Swift equivalent for MIN and MAX macros
... accept any parameter type that conforms to Comparable protocol, may it be String, Character or one of your custom class or struct.
Thereby, the following Playground sample code works perfectly:
class Route: Comparable, CustomStringConvertible {
let distance: Int
var description: String {...
What is the difference between a User Control Library and a Custom Control Library?
... control is that if you can get something done with a user control and the extra control element in the logical tree doesn't bother you, use a user control as they are so much easier to create and maintain. Use a custom control only if you have a reason not to use a user control.
...
How to make good reproducible pandas examples
...search (search the docs, search StackOverflow), give a summary:
The docstring for sum simply states "Compute sum of group values"
The groupby docs don't give any examples for this.
Aside: the answer here is to use df.groupby('A', as_index=False).sum().
if it's relevant that you have Times...
How can I get a resource “Folder” from inside my jar File?
...
Finally, I found the solution:
final String path = "sample/folder";
final File jarFile = new File(getClass().getProtectionDomain().getCodeSource().getLocation().getPath());
if(jarFile.isFile()) { // Run with JAR file
final JarFile jar = new JarFile(jarFile...
Can attributes be added dynamically in C#?
...
Why do you need to? Attributes give extra information for reflection, but if you externally know which properties you want you don't need them.
You could store meta data externally relatively easily in a database or resource file.
...
Entity Framework Code First - two Foreign Keys from same table
... this:
public class Team
{
public int TeamId { get; set;}
public string Name { get; set; }
public virtual ICollection<Match> HomeMatches { get; set; }
public virtual ICollection<Match> AwayMatches { get; set; }
}
public class Match
{
public int MatchId { get; set;...