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How can we match a^n b^n with Java regex?
...$groups);
print("$test $isMatch $groupsJoined\n");
}
}
$tests = array('aaa', 'aaab', 'aaaxb', 'xaaab', 'b', 'abbb');
$r1 = '/^a+(?=b+)/';
# └────┘
# lookahead
testAll($r1, $tests);
The output is (as seen on ideone.com):
aaa 0
aaab 1 aaa
aaaxb 0
xaaab 0
b 0...
Map Tiling Algorithm
...t be difficult to rewrite in JS.
var tileDimension:int = 20;
var levelNum:Array = new Array();
levelNum[0] = [1, 1, 1, 1, 1, 1, 1, 1, 1];
levelNum[1] = [1, 0, 0, 0, 0, 0, 0, 0, 1];
levelNum[2] = [1, 0, 1, 1, 1, 0, 1, 0, 1];
levelNum[3] = [1, 0, 1, 0, 1, 0, 1, 0, 1];
levelNum[4] = [1, 0, 1, 0, 0, 0...
Why can't I have abstract static methods in C#?
...();
}
//what is the output?
//does each subclass get its own copy of the array "legs"?
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Why does AngularJS include an empty option in select?
...
This unfortunately doesn't work if you are using an array and null is one of your values.
– vpiTriumph
Sep 26 '13 at 2:57
6
...
How to build a query string for a URL in C#?
...cialized;
private string ToQueryString(NameValueCollection nvc)
{
var array = (
from key in nvc.AllKeys
from value in nvc.GetValues(key)
select string.Format(
"{0}={1}",
HttpUtility.UrlEncode(key),
HttpUtility.UrlEncode...
What is the difference between float and double?
...
@InQusitive: Consider for example an array consisting of the value 2^24 followed by 2^24 repetitions of the value 1. Summing in order produces 2^24. Reversing produces 2^25. Of course you can make examples (e.g. make it 2^25 repetitions of 1) where any order end...
How to sort strings in JavaScript
...on in JavaScript?
Javascript : natural sort of alphanumerical strings
Sort Array of numeric & alphabetical elements (Natural Sort)
Sort mixed alpha/numeric array
https://web.archive.org/web/20130929122019/http://my.opera.com/GreyWyvern/blog/show.dml/1671288
https://web.archive.org/web/2013100522...
Rails nested form with has_many :through, how to edit attributes of join model?
...rs_attributes is actually a zero-indexed Hash with String keys, and not an Array? Well, this is because the form field keys that are sent to the server look like this:
topic[name]
topic[linkers_attributes][0][is_active]
topic[linkers_attributes][0][article_attributes][title]
Creating the record ...
What are “res” and “req” parameters in Express functions?
...est.method, which will be "GET" in this case, hence the app.get() call.
An array of HTTP headers in request.headers, containing items like request.headers.accept, which you can use to determine what kind of browser made the request, what sort of responses it can handle, whether or not it's able to u...
'Missing recommended icon file - The bundle does not contain an app icon for iPhone / iPod Touch of
...but here's the short answer:
<key>CFBundleIconFiles</key>
<array>
<string>icon@2x.png</string>
<string>icon.png</string>
<string>Icon-Small.png</string>
<string>Icon-Small@2x.png</string>
<string>Default.png...