So you want the word within the array which occurs earliest in the target string? That sounds like you might want something like: return array.Select(word => new { word, index = target.IndexOf(word) }) .Where(pair =>... more 5/15/2015 3:35:50 PM

No need for two statements at all... nor using a string conversion. Just use the key of each group, and the DateTime.Date property: var query = list.GroupBy(x => new { x.Tag, x.Time.Date }) .Select(g => new NewPoint ... more 5/15/2015 1:45:38 PM

Don't use a third-party class in this case - Android already has a Base64 class. Just use Base64.encodeToString(byte[], int) and Base64.decode(String, int). Note that base64-encoding is for binary data, so if your actual source is text,... more 5/15/2015 10:40:08 AM

You're currently combining two separable concepts: How do I convert between an instance of Person and a stream of binary data (or byte[])? How do I encrypt/decrypt an arbitrary stream of binary data (or byte[])? Those two concepts... more 5/15/2015 10:15:31 AM

If the client sends me a byte of value 0, it is not received by the server. Yes it is, but you're ignoring it: while ((r = input.read()) > 0) { You probably meant: while ((r = input.read()) > -1) { The second issue is,... more 5/15/2015 10:00:25 AM

I would avoid bringing the Java week-of-year into the picture at all - unless you can persuade MongoDB to stop being so broken, somehow. (That's a really odd definition of week-of-year; I'd normally use the ISO-8601 definition.) If you... more 5/15/2015 7:32:00 AM

Now I'm intentionally unlocking in b() which releases the lock so that other waiting thread could get the lock No, it doesn't fully release it - it just decrements the lock count. Before you call unlock, you've called lock twice, so... more 5/15/2015 7:12:39 AM

the app freeze in this point Yes, because you're doing a lot of work in the UI thread. Don't do that - never do that. You should probably do all that work in a background thread (either with BackgroundWorker or maybe Task.Run) and... more 5/15/2015 7:09:57 AM

This is the first problem: public static void main(String args[]); You're not actually declaring a method body here. It should be: public static void main(String[] args) { // Method body goes here } You should only use a ; at the... more 5/15/2015 5:57:43 AM

I would suggest returning a ParseResult<T>, which is defined as something like: public struct ParseResult<T> { // Or an exception, or a way of creating an exception private readonly bool success; private readonly T... more 5/14/2015 2:34:04 PM