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In what cases will HTTP_REFERER be empty
...age in the window/tab.
clicked a link in an external application.
switched from a https URL to a http URL.
switched from a https URL to a different https URL.
has security software installed (antivirus/firewall/etc) which strips the referrer from all requests.
is behind a proxy which strips the refe...
Read/write to Windows registry using Java
...e.
For example, the following code obtains the exact windows distribution from the registry:
String value = WinRegistry.readString (
WinRegistry.HKEY_LOCAL_MACHINE, //HKEY
"SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion", //Key
"ProductName"); ...
Convert JavaScript string in dot notation into an object reference
...erencing them). Like asking "how can I look up a function or variable name from a string".
This is bad programming practice (unnecessary metaprogramming specifically, and kind of violates function side-effect-free coding style, and will have performance hits). Novices who find themselves in ...
How to export JavaScript array info to csv (on client side)?
...
From what I know, there isn't a way to do that using window.open. However, you can create a hidden link that has a download attribute set to the file name you desire. Then "clicking" this link will download the file in the na...
Difference between Lookup() and Dictionary(Of list())
...
@nawfal - that's exactly what Lookups are for. From msdn: "You can create an instance of a Lookup<TKey, TElement> by calling ToLookup on an object that implements IEnumerable<T>."
– Niall Connaughton
Aug 26 '15 at 6:06
...
JavaScript + Unicode regexes
...s into a set of code points. Since it's Unicode's website, the information from it should be accurate.
Note that you will need to exclude the high-end characters, as JavaScript can only handle characters less than FFFF (hex). I suggest checking the Abbreviate Collate, and Escape check boxes, whi...
Array or List in Java. Which is faster?
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@Fortyrunner - From your experience, are there any such choices in Java between abstraction and raw data forms that do make a significant difference in performance ?
– euphoria83
Apr 4 '09 at 17:53
...
Priority queue in .Net [closed]
...
You might like IntervalHeap from the C5 Generic Collection Library. To quote the user guide
Class IntervalHeap<T> implements interface IPriorityQueue<T> using an interval heap stored as an array of pairs. The FindMin and
FindMax operations,...
How can I parse a time string containing milliseconds in it with python?
...roseconds. You may be better off using datetime, like this:
>>> from datetime import datetime
>>> a = datetime.strptime('30/03/09 16:31:32.123', '%d/%m/%y %H:%M:%S.%f')
>>> a.microsecond
123000
...
string.charAt(x) or string[x]?
...
From MDN:
There are two ways to access an individual character in a string. The first is the charAt method, part of ECMAScript 3:
return 'cat'.charAt(1); // returns "a"
The other way is to treat the string as an ar...