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What do 'real', 'user' and 'sys' mean in the output of time(1)?

...ocess has multiple threads (and this process is running on a computer with more than one processor) it could potentially exceed the wall clock time reported by Real (which usually occurs). Note that in the output these figures include the User and Sys time of all child processes (and their descenda...
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How to put more than 1000 values into an Oracle IN clause [duplicate]

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Why does Windows64 use a different calling convention from all other OSes on x86-64?

...choice of four arguments in RCX, RDX, R8 and R9. Beyond that ... There are more differences between the UN*X and Windows x64 ABIs than just the mapping of arguments to specific registers. For the overview on Win64, check: http://msdn.microsoft.com/en-us/library/7kcdt6fy.aspx Win64 and AMD64 UN*X als...
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What is the coolest thing you can do in

...Check http://www.microsoft.com/technet/scriptcenter/funzone/agent.mspx for more information. EDIT 2011-09-02 I recently discovered that Microsoft Agent is not natively installed on Windows 7. However it is offered as a separate download here. I have not tested this so cannot verify whether it opera...
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Submit jQuery UI dialog on

... return false; } }); } }); Here's a more detailed view of what it would look like: $( "#dialog-form" ).dialog({ buttons: { … }, open: function() { $("#dialog-form").keypress(function(e) { if (e.keyCode == $.ui.keyCode.ENTER) { $(this).p...
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Combined area of overlapping circles

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What is more efficient: Dictionary TryGetValue or ContainsKey+Item?

... This is more subtle: if(dict.ContainsKey(ikey)) dict[ikey]++; else dict.Add(ikey, 0);. But i think that TryGetValue is still more efficient since the get and set of the indexer property is used, isn't it? – Ti...
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Regex to validate password strength

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How to generate a random string in Ruby

......50).map { ('a'..'z').to_a[rand(26)] }.join And a last one that's even more confusing, but more flexible and wastes fewer cycles: o = [('a'..'z'), ('A'..'Z')].map(&:to_a).flatten string = (0...50).map { o[rand(o.length)] }.join ...
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Why don't they teach these things in school? [closed]

...unate enough to get into Google Summer of Code. I learned a lot (probably more than I've learned in the sum of all my university coursework). I'm really wondering why they don't teach a few of the things I learned sooner in school though. To name a few: ...