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What integer hash function are good that accepts an integer hash key?
... built-in integer multiplication unit. C code, assuming int is 32 bit (for Java, replace >> with >>> and remove unsigned):
unsigned int hash(unsigned int x) {
x = ((x >> 16) ^ x) * 0x45d9f3b;
x = ((x >> 16) ^ x) * 0x45d9f3b;
x = (x >> 16) ^ x;
return...
Turning a string into a Uri in Android
...he doc http://developer.android.com/reference/android/net/Uri.html#parse%28java.lang.String%29
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What is the difference between a pseudo-class and a pseudo-element in CSS?
...bstractions about the document tree beyond those specified by the document language. For instance, document languages do not offer mechanisms to access the first letter or first line of an element's content. Pseudo-elements allow authors to refer to this otherwise inaccessible information. Pseudo-el...
Is it unnecessary to put super() in constructor?
...tends Base { }
This is fine because if you add no constructor explicitly Java puts in a public default constructor for you.
public class Base { }
public class Derived extends Base { public Derived(int i) { } }
Also fine.
public class Base { public Base(String s) { } }
public class Derived exte...
how to detect search engine bots with php?
...bots:
if (preg_match('/bot|crawl|curl|dataprovider|search|get|spider|find|java|majesticsEO|google|yahoo|teoma|contaxe|yandex|libwww-perl|facebookexternalhit/i', $_SERVER['HTTP_USER_AGENT'])) {
// is bot
}
In addition I use a whitelist to block unwanted bots:
if (preg_match('/apple|baidu|bing...
How can I use map and receive an index as well in Scala?
...menting a var without building the new collection, just as you would do in Java. But it's not functional style. Think if you actually need it.
– Cristian Vrabie
Mar 12 '12 at 10:52
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Why is a combiner needed for reduce method that converts type in java 8
... compilation error you got - argument mismatch; int cannot be converted to java.lang.String. Actually, I think passing 0 as the identity value is also wrong here, since a String is expected (T).
Also note that this version of reduce processes a stream of Ts and returns a T, so you can't use it to r...
Why use Ruby instead of Smalltalk? [closed]
...of 'smalltalk as embedded scripting language' never caught on.As an aside, Java was not the easiest thing to interface with other code bases (JNI is fairly clumsy), but that did not stop it from gaining mindshare. IMO the interfacing argument is significant - ease of embedding hasn't hurt Python - ...
Can regular expressions be used to match nested patterns? [duplicate]
...nput).
There are many parser generators avialable, for instance ANTLR for Java. Finding an existing grammar for Java (or C) is also not difficult.
For more background: Automata Theory at Wikipedia
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Gridview height gets cut
...ng his work for the GridView has been dead easy.
ExpandableHeightGridView.java:
package com.example;
public class ExpandableHeightGridView extends GridView
{
boolean expanded = false;
public ExpandableHeightGridView(Context context)
{
super(context);
}
public Expanda...