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Why is null an object and what's the difference between null and undefined?
...Script: I don't know.
In short; undefined is where no notion of the thing exists; it has no type, and it's never been referenced before in that scope; null is where the thing is known to exist, but it's not known what the value is.
One thing to remember is that null is not, conceptually, the same as...
How to get duplicate items from a list using LINQ? [duplicate]
...t actually return all duplicate records, it returns all duplicate records EXCEPT for the first occurrence in each group. So yes, if you're after a list of just the distinct duplicate values then this answer, with the Distinct method is the way to go, but if you want all the duplicate rows, then Scot...
How can I get the latest JRE / JDK as a zip file rather than EXE or MSI installer? [closed]
...ory (C:\JDK in this case)
Download latest version of JDK from Oracle (for example jdk-7u7-windows-x64.exe)
Download and install 7-Zip (or download 7-Zip portable version if you are not administrator)
With 7-Zip extract all the files from jdk-XuXX-windows-x64.exe into the directory C:\JDK
Execute the...
What is the difference between a port and a socket?
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1006
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returning in the middle of a using block
...ou didn't return and simply kept a reference to a variable.
using ( var x = new Something() ) {
// not a good idea
return x;
}
Just as bad
Something y;
using ( var x = new Something() ) {
y = x;
}
share
...
combinations between two lists?
...2. In python:
import itertools
list1=['a','b','c']
list2=[1,2]
[list(zip(x,list2)) for x in itertools.permutations(list1,len(list2))]
Returns
[[('a', 1), ('b', 2)], [('a', 1), ('c', 2)], [('b', 1), ('a', 2)], [('b', 1), ('c', 2)], [('c', 1), ('a', 2)], [('c', 1), ('b', 2)]]
...
How to make a HTML Page in A4 paper size page(s)?
Is it possible to make a HTML page behave, for example, like a A4-sized page in MS Word?
15 Answers
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What is the difference between 'my' and 'our' in Perl?
I know what my is in Perl. It defines a variable that exists only in the scope of the block in which it is defined. What does our do?
...
StringBuilder vs String concatenation in toString() in Java
...rom the question (compiled on JDK 1.6.0_16) and found the optimization as expected. I'm pretty sure all modern compilers will do it.
– Michael Borgwardt
Oct 7 '09 at 16:12
22
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How are people managing authentication in Go? [closed]
...ere is a lot of latent interest in this topic, and many people are asking exactly the same thing and not finding answers on the Interwebs.
Most of the available information results in the textual equivalent of the hand wavy thing, left as an "exercise for the reader." ;)
However I've finally locat...