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What is the difference between a map and a dictionary?
... values. Isn't a dictionary the same? What is the difference between a map and a dictionary 1 ?
11 Answers
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Minimum and maximum date
I was wondering which is the minimum and the maximum date allowed for a Javascript Date object. I found that the minimum date is something like 200000 B.C., but I couldn't get any reference about it.
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Rails :include vs. :joins
... that requires it. In some cases, you know the join will be more efficient and will not incur the risk of duplication.
– Jonathan Swartz
Nov 21 '13 at 0:28
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What is the difference between Collections.emptyList() and Collections.EMPTY_LIST
In Java, we have Collections.emptyList() and Collections.EMPTY_LIST . Both have the same property:
4 Answers
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String representation of an Enum
...This is because static field initialisers are called in declaration order, and before the static constructor, creating the weird and necessary but confusing situation that the instance constructor can be called before all static fields have been initialised, and before the static constructor is call...
How to check the version before installing a package using apt-get?
...ow the version details.
It also shows which version is currently installed and which versions are available to install.
For example, apt-cache policy hylafax+
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Are there any HTTP/HTTPS interception tools like Fiddler for mac OS X? [closed]
...from web applications in Mac OS X. I used to do it with fiddler on Windows and would love to have this tool available on Mac as well.
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.toArray(new MyClass[0]) or .toArray(new MyClass[myList.size()])?
...rray(new MyClass[0]);
I have run a micro benchmark using jmh the results and code are below, showing that the version with an empty array consistently outperforms the version with a presized array. Note that if you can reuse an existing array of the correct size, the result may be different.
Benc...
What is the difference between and ?
What is the difference between <html lang="en"> and <html lang="en-US"> ? What other values can follow the dash?
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How to initialize all members of an array to the same value?
...s that value is 0 (in which case you can omit some part of the initializer
and the corresponding elements will be initialized to 0), there's no easy way.
Don't overlook the obvious solution, though:
int myArray[10] = { 5, 5, 5, 5, 5, 5, 5, 5, 5, 5 };
Elements with missing values will be initiali...