pattern-matching

I have a black box algorithm that analyses a time series and "detects" certain events in the series. It returns a list of events, each containing a start time and end time. The events do not overlap. I also have a list of the "true" events, again with start time and end time for each event, not overlapping. I want to compare the two lists and match detected and true events that fall within a certain time tolerance (True Positives). The complication is that the algorithm may detect events that are not really there (False Positives) or might miss events that were there (False Negatives). What is

Is there any way to match just on generic type passed in function? I'd like to do: def getValue[T](cursor: Cursor, columnName: String): T = { val index = cursor.getColumnIndex(columnName) T match { case String => cursor.getString(index) case Int => cursor.getInteger(index) } I thought about something like classOf or typeOf , but none of them is acceptable for just types, but objects. My idea was also to create some object of type T and then check its type, but I think there can be a better solution. You could use ClassTag . val string = implicitly[ClassTag[String]] def getValue[T : ClassTag] =

Is there a regex to match a string of increasing contiguous numbers, e.g. 123, 56789, etc? I don't think it can be in regex but worth checking with folks here. ^(?:0(?=1|$))?(?:1(?=2|$))?(?:2(?=3|$))?(?:3(?=4|$))?(?:4(?=5|$))?(?:5(?=6|$))?(?:6(?=7|$))?(?:7(?=8|$))?(?:8(?=9|$))?(?:9$)?$ Result: http://rubular.com/r/JfJJ6ntEQG ^(1|^)((2|^)((3|^)((4|^)((5|^)((6|^)((7|^)((8|^)((9|^))?)?)?)?)?)?)?)?$ Python demonstration: >>> import re >>> good = ['1', '12', '123', '23', '3', '4', '45', '456', '56', '6', '7', '78', '789', '89', '9', '123456789'] >>> bad = ['a', '11', '13', '1345', '2459', '321',

Running on OS X with a bash script: sourceFile=`basename $1` shopt -s nocasematch if [[ "$sourceFile" =~ "adUsers.txt" ]]; then echo success ; else echo fail ; fi The above works, but what if the user sources a file called adUsers_new.txt ? I tried: if [[ "$sourceFile" =~ "adUsers*.txt" ]]; then echo success ; else echo fail ; fi But the wildcard doesn't work in this case. I'm writing this script to allow for the user to have different iterations of the source file name, which must begin with aduser and have the .txt file extension. In bash , you can get the first 7 characters of a shell