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What special characters must be escaped in regular expressions?
...racter class metacharacters as literals. Put the ^ anywhere except at the start, the ] at the start, and the - at the start or the end of the character class to match these literally, e.g.:
[]^-]
In POSIX basic regular expressions (BRE), these are metacharacters that you need to escape to suppre...
How to pattern match using regular expression in Scala?
...tring) =
params.headOption flatMap (_.r unapplySeq str)
}
class StartsWithExtractor(params: List[String]) {
def unapply(str: String) =
params.headOption filter (str startsWith _) map (_ => str)
}
class MapExtractor(keys: List[String]) {
def unapplySeq[T](map: Map[Str...
How do I convert a String object into a Hash object?
...this requires the same to be true of all of the objects in the hash.
If I start with the hash {:a => Object.new}, then its string representation is "{:a=>#<Object:0x7f66b65cf4d0>}", and I can't use eval to turn it back into a hash because #<Object:0x7f66b65cf4d0> isn't valid Ruby ...
Is gcc std::unordered_map implementation slow? If so - why?
...;typename TEST>
void time_test (TEST t, const char *m) {
struct tms start;
struct tms finish;
long ticks_per_second;
times(&start);
t();
times(&finish);
ticks_per_second = sysconf(_SC_CLK_TCK);
std::cout << "elapsed: "
<< ((finish...
How can jQuery deferred be used?
...a REST server. In this case, I don't want the browser-side application to start loading data before it has all the schemas loaded. $.when.apply().then() is perfect for this. Thank to Raynos for pointers on using then(fn1, fn2) to monitor for error conditions.
fetch_sources = function (schema_u...
Origin null is not allowed by Access-Control-Allow-Origin
...r upload your data to a temporary server. If you still want to use Chrome, start it with the below option;
--allow-file-access-from-files
More info how to add the above parameter to your Chrome: Right click the Chrome icon on your task bar, right click the Google Chrome on the pop-up window and c...
What does Docker add to lxc-tools (the userspace LXC tools)?
...a throwaway interactive shell.
LXC already provides this.
I only just started learning about LXC and Docker, so I'd welcome any corrections or better answers.
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I want to remove double quotes from a String
...
^": matches the beginning of the string ^ and a ". If the string does not start with a ", the expression already fails here, and nothing is replaced.
(.+(?="$)): matches (and captures) everything, including double quotes one or more times, provided the positive lookahead is true
(?="$): the positiv...
How to validate an e-mail address in swift?
...OC" means ordinary character - a letter or a digit.
__firstpart ... has to start and end with an OC. For the characters in the middle you can have certain characters such as underscore, but the start and end have to be an OC. (However, it's ok to have only one OC and that's it, for example: j@blah....
Will Google Android ever support .NET? [closed]
... .NET languages. This is now available at http://monodroid.net
Getting Started: http://monodroid.net/Welcome
Documentation: http://monodroid.net/Documentation
Tutorials: http://monodroid.net/Tutorials
Mono on Android is based on the Mono 2.10 runtime, and defaults to 4.0 profile with the C# 4....