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What does new self(); mean in PHP?
... same as :
self::$_instance = new MyClass();
Edit : a couple more informations, after the comments.
If you have two classes that extend each other, you have two situations :
getInstance is defined in the child class
getInstance is defined in the parent class
The first situation would lo...
How to get last items of a list in Python?
...
You can use negative integers with the slicing operator for that. Here's an example using the python CLI interpreter:
>>> a = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12]
>>> a
[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12]
>>> a[-9:]
[4, 5, 6, 7, 8, 9, 10, 11, 12]...
How does the algorithm to color the song list in iTunes 11 work? [closed]
The new iTunes 11 has a very nice view for the song list of an album, picking the colors for the fonts and background in function of album cover. Anyone figured out how the algorithm works?
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How do I pass parameters into a PHP script through a webpage?
...s set, but empty if there are no GET parameters set. empty() returns false for empty strings and arrays.
– Tim S.
Mar 7 '13 at 8:15
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partial string formatting
Is it possible to do partial string formatting with the advanced string formatting methods, similar to the string template safe_substitute() function?
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ValidateAntiForgeryToken purpose, explanation and example
Could you explain ValidateAntiForgeryToken purpose and show me example about ValidateAntiForgeryToken in MVC 4?
4 Answe...
What does the slash mean in help() output?
What does the / mean in Python 3.4's help output for range before the closing parenthesis?
3 Answers
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Is there a decorator to simply cache function return values?
... is periodically called with the same arguments.
Example of an LRU cache for computing Fibonacci numbers:
@lru_cache(maxsize=None)
def fib(n):
if n < 2:
return n
return fib(n-1) + fib(n-2)
>>> print([fib(n) for n in range(16)])
[0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89...
Access data in package subdirectory
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This actually worked for me. Did not have any problems. I am using python 3.6
– Jorge
Jan 4 '19 at 13:07
1
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Regex Email validation
... m = new MailAddress(emailaddress);
return true;
}
catch (FormatException)
{
return false;
}
}
This saves you a lot af headaches because you don't have to write (or try to understand someone else's) regex.
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