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Is Java RegEx case-insensitive?

... You can also match case insensitive regexs and make it more readable by using the Pattern.CASE_INSENSITIVE constant like: Pattern mypattern = Pattern.compile(MYREGEX, Pattern.CASE_INSENSITIVE); Matcher mymatcher= mypattern.matcher(mystring); ...
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Using Regular Expressions to Extract a Value in Java

...blic static void main(String[] args) { // create matcher for pattern p and given string Matcher m = p.matcher("Testing123Testing"); // if an occurrence if a pattern was found in a given string... if (m.find()) { // ...then you can use group() methods. System.out.prin...
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Why does my application spend 24% of its life doing a null check?

I've got a performance critical binary decision tree, and I'd like to focus this question on a single line of code. The code for the binary tree iterator is below with the results from running performance analysis against it. ...
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What is the best way to detect a mobile device?

... attribute? I would like to run a different script if the browser is on a handheld device. 59 Answers ...
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Android : Check whether the phone is dual SIM

... Update 23 March'15 : Official multiple SIM API is available now from Android 5.1 onwards Other possible option : You can use Java reflection to get both IMEI numbers. Using these IMEI numbers you can check whether the phone is a DUAL SIM or not. Try following activity : import andro...
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How are Python's Built In Dictionaries Implemented?

...now how the built in dictionary type for python is implemented? My understanding is that it is some sort of hash table, but I haven't been able to find any sort of definitive answer. ...
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_csv.Error: field larger than field limit (131072)

... csv csv.field_size_limit(sys.maxsize) sys.maxsize works for Python 2.x and 3.x. sys.maxint would only work with Python 2.x (SO: what-is-sys-maxint-in-python-3) Update As Geoff pointed out, the code above might result in the following error: OverflowError: Python int too large to convert to C l...
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Best way to compare 2 XML documents in Java

...tion that basically translates a custom message format into an XML message and sends it out the other end. I've got a good set of input/output message pairs so all I need to do is send the input messages in and listen for the XML message to come out the other end. ...
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Does Java have a HashMap with reverse lookup?

...okup in both directions. Is there a name for this type of data structure, and is anything like this included in Java's standard libraries? (or maybe Apache Commons?) ...
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How to use SQL Order By statement to sort results case insensitive?

... Is there any difference between 'UPPER' and 'LOWER' – Jagadeesh Apr 8 '13 at 15:38 2 ...