Java locking of elements inside array

I have dynamic array of hashtables Can I use synchronized for each of them separately? Like s开发者_如何学Pythonynchronized(array[1]) { code .. }, synchronized(array[2]) { code .. }

ASP.NET MVC - Data Annotations - Why add a default RequiredAttribute?

Can anyone explain why it is assumed that a non nullable type property should always have a RequiredAttribue?

Error when calling 3rd party executable from Powershell when using an IDE

I have a PowerShell script that uses du.exe (Disk Usage originally from Sysinternals) to calculate the size of directories.

他的不认输他的要自由自由是什么歌？

Xscale compilers for Linux? (also Xscale compile flags question)

I am currently using a GCC 3.3.3 based cross compiler to开发者_运维问答 compile for a Xscale PXA270 development board.However, I was wondering if there are other Xscale compilers out there that run on

Is time comes to not worry about memory [closed]

Closed. This question is opinion-based. It is not currently accepting answers. Want to improve this question? Update the question so it can be answered with facts and citations by editing

Hows the syntax to getProperty dynamically?

Is thi开发者_如何学运维s possible and if, how? item.foo = \"moo\" def x = \"foo\" item.[x] = \"moo\"

移动怎么取消彩铃（移动如何取消彩铃）？

大家好，伊人来为大家解答以上问题。移动怎么开发者_如何学JAVA取消彩铃，移动如何取消彩铃很多人还不知道，现在让我们一起来看看吧！

how to stop reading from file in C

I am just trying to read each character of the file and print it out but when the file finishes reading, but I am getting a bunch of ? after it finishes reading. How do I fix it?

How to use NSFetchedResultsController to support managing data on UITableView like iPhone Photo app

I am a beginner for iPhone development, I use core data as backed store and show multiple data entities on UITableView. Each data entity will be show as a preview thumbnail， one table view cell will