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How to use wait and notify in Java without IllegalMonitorStateException?

I have 2 matrices and I need to multiply them and then print the results of each cell. As soon as one cell is ready I need to print it, but for example I need to print the [0][0] cell before cell [2][0] even if the result of [2][0] is ready first. So I need to print it by order. So my idea is to mak...
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Is it possible to prevent an NSURLRequest from caching data or remove cached data following a reques

...P request using NSURLRequest for a chunk of data. Object allocation spikes and I assign the data accordingly. When I finish with the data, I free it up accordingly - however instruments doesn't show any data to have been freed! ...
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Reading/parsing Excel (xls) files with Python

...o, be warned that doing this is a real PITA. The number of caveats is huge and the documentation is lacking and annoying. I ran into many weird bugs and gotchas, some of which took many hours to figure out. UPDATE: For newer .xlsx files, the recommended library for reading and writing appears to be...
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Distinct by property of class with LINQ [duplicate]

... You can use grouping, and get the first car from each group: List<Car> distinct = cars .GroupBy(car => car.CarCode) .Select(g => g.First()) .ToList(); ...
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What does the keyword Set actually do in VBA?

... A VB object reference is not quite the same as a C pointer. And there is no equivalent of "&i" in VB. – Tomalak Dec 8 '08 at 14:02 10 ...
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What does 'public static void' mean in Java?

...hree completely different things: public means that the method is visible and can be called from other objects of other types. Other alternatives are private, protected, package and package-private. See here for more details. static means that the method is associated with the class, not a specifi...
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Allow User to input HTML in ASP.NET MVC - ValidateInput or AllowHtml

.../de-de/magazine/hh708755.aspx) says, that you shouldn't use ValidateInpute and take AllowHtmlAttribute instead. (Did'nt found the English version) – Alexander Schmidt Feb 2 '12 at 11:26 ...
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Finding out whether a string is numeric or not

...ring is made up of numbers only. I am taking out a substring from a string and want to check if it is a numeric substring or not. ...
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How to create streams from string in Node.Js?

...s answer is probably better. My old answer text is preserved below. To convert a string to a stream, you can use a paused through stream: through().pause().queue('your string').end() Example: var through = require('through') // Create a paused stream and buffer some data into it: var stream...
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How to “pretty” format JSON output in Ruby on Rails

...g to do with this patch. Also, Time.parse returns the same result when you convert the string back to time for both formats. It'd only be a minor inconvenience when searching logs for time stamps, but if you're grepping anyway adding a few \s+ isn't really a big deal. – con-- ...