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What is the difference between Serializable and Externalizable in Java?
...to say that Externalizable suits me much better, as I don't want to output arrays with empty spaces or placeholder objects, plus with the explicit interface you can handle inheritance, which means my synchronized sub-class can easily add locking around the the call to writeExternal(). So yeah, Exter...
What's the idiomatic syntax for prepending to a short python list?
...st.insert(0, x)
But this is inefficient, because in Python, a list is an array of pointers, and Python must now take every pointer in the list and move it down by one to insert the pointer to your object in the first slot, so this is really only efficient for rather short lists, as you ask.
Here'...
What's the difference between :: (double colon) and -> (arrow) in PHP?
...
The => operator is used to assign key-value pairs in an associative array. For example:
$fruits = array(
'Apple' => 'Red',
'Banana' => 'Yellow'
);
It's meaning is similar in the foreach statement:
foreach ($fruits as $fruit => $color)
echo "$fruit is $color in color.";
...
When to use Preorder, Postorder, and Inorder Binary Search Tree Traversal strategies
...or example, if you want to create a replica of a tree, put the nodes in an array with a pre-order traversal. Then perform an Insert operation on a new tree for each value in the array. You will end up with a copy of your original tree.
In-order: : Used to get the values of the nodes in non-decreasi...
How to print a number with commas as thousands separators in JavaScript
... || '').length < prec) {
s[1] = s[1] || '';
s[1] += new Array(prec - s[1].length + 1).join('0');
}
return s.join(dec);
}
UPDATE 02/13/14
People have been reporting this doesn't work as expected, so I did a JS Fiddle that includes automated tests.
Update 26/11/2017
H...
JSON and XML comparison [closed]
...
JSON have arrays inbuilt, as well as "null" value. Whereas in XML you need some sort of a convention across your schema parsers. There is also XSLT-like conversion projects for JSON (e.g. github.com/emlynoregan/bOTLjs )
...
How to access the correct `this` inside a callback?
... the same as binding it yourself, but the function/method does it for you. Array#map [docs] is such a method. Its signature is:
array.map(callback[, thisArg])
The first argument is the callback and the second argument is the value this should refer to. Here is a contrived example:
var arr = [1, 2, ...
What is the difference between quiet NaN and signaling NaN?
...allow arithmetic to proceed somewhat normally. E.g., you might have a huge array of numbers, some of which represent special cases that cannot be handled normally. You can call a complicated function to process this array, and it could operate on the array with usual arithmetic, ignoring NaNs. After...
Disable JavaScript error in WebBrowser control
...="prgCmds" />.</param>
/// <param name="prgCmds">An array of OLECMD structures that indicate the commands for which the caller needs status information. This method fills the <paramref name="cmdf" /> member of each structure with values taken from the OLECMDF enumeration...
MongoDB/NoSQL: Keeping Document Change History
... Will this affect performance if indexed fields represented as arrays?
– DmitriD
Jun 14 '17 at 2:28
@All -...