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Array slicing in Ruby: explanation for illogical behaviour (taken from Rubykoans.com)
...nterested in a link if any just to explain the "why" like the OP and other commenters are asking. Your diagram makes sense except Array[4] is nil. Array[3] is :jelly. I would expect Array[4,N] to be nil but it's [] like the OP says. If it's a place, it's a pretty useless place because Array[4, -...
How does Chrome's “Request Desktop Site” option work?
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What does the * * CSS selector do?
...two selectors one after another (for example li a), you get the descendant combinator. So * * is any element that is a descendant of any other element — in other words, any element that isn't the root element of the whole document.
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How can I do DNS lookups in Python, including referring to /etc/hosts?
...('localhost')) # result from hosts file
print(socket.gethostbyname('google.com')) # your os sends out a dns query
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When to use a key/value store such as Redis instead/along side of a SQL database?
...seem to figure out when it's time to use it in an application.
I would recommend you to read this tutorial which contains also use cases. Since redis is rather memory oriented it's really good for frequently updated real-time data, such as session store, state database, statistics, caching and its...
XML parsing of a variable string in JavaScript
...gt;";
var result = $(xml).find("album").text();
Note: As pointed out in comments; jQuery does not really do any XML parsing whatsoever, it relies on the DOM innerHTML method and will parse it like it would any HTML so be careful when using HTML element names in your XML. But I think it works fair...
How many constructor arguments is too many?
...urname; }
public String getSsn() { return ssn; }
}
import static com.acme.CustomerBuilder.customer;
public class Client {
public void doSomething() {
Customer customer = customer()
.withSurname("Smith")
.withFirstName("Fred")
.withSsn("123XS...
run main class of Maven project [duplicate]
...t the main class (which doesn't require any arguments) can be run from the command-line using a maven command like:
2 Answe...
Difference between Activity Context and Application Context
...mably has some information about the current activity that is necessary to complete those calls. If you show the exact error message, might be able to point to what exactly it needs.
But in general, use the activity context unless you have a good reason not to.
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How does this site infecting script work?
...cial characters, turning it into a normal URL:
evil://dyndns-org.gamestop.com.mybestyouxi-cn.genuinehollywood.ru:8080/softonic.com/softonic.com/google.com/livejasmin.com/videosz.com/
(I manually changed http: to evil:)
Note that the regex could have been simplified to .replace(/[#$@^&()!]/ig...