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What are bitwise shift (bit-shift) operators and how do they work?

...rs can be applied to integer values (int, long, possibly short and byte or char). In some languages, applying the shift operators to any datatype smaller than int automatically resizes the operand to be an int. Note that <<< is not an operator, because it would be redundant. Also note that...
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jQuery: Check if div with certain class name exists

...presumably because it changes the native features jQuery can use to do the selection. Here's a test case where the div exists, and here's one where it doesn't exist. – T.J. Crowder Apr 26 '11 at 6:10 ...
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Difference between / and /* in servlet mapping url pattern

...tial difference between /* and / is that a servlet with mapping /* will be selected before any servlet with an extension mapping (like *.html), while a servlet with mapping / will be selected only after extension mappings are considered (and will be used for any request which doesn't match anything ...
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Setting “checked” for a checkbox with jQuery

... also $(selector).checked to check is checked – eomeroff May 2 '11 at 23:56 6 ...
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What is the best way to iterate over a dictionary?

...e wrong collection type in the first place), you should iterate dictionary.Select( (kvp, idx) => new {Index = idx, kvp.Key, kvp.Value}) instead and not use .ElementAt inside the loop. – spender Mar 2 '15 at 2:17 ...
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Can the Android layout folder contain subfolders?

...you backed everything up from step 1!!!) Right click the res directory and select new > directory. Name this new directory "layouts". (This can be whatever you want, but it will not be a 'fragment' directory or 'activity' directory, that comes later). Right click the new "layouts" directory and s...
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SQL Server Regular expressions in T-SQL

... the database you stored the assembly in. Then use in queries like so: SELECT * FROM ( SELECT DailyLog.Date, DailyLog.Researcher, DailyLog.team, DailyLog.field, DailyLog.EntityID, DailyLog.[From], DailyLog.[To], dbo.RegexConta...
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Text editor to open big (giant, huge, large) text files [closed]

... for quick scripts, and its .. (range flip-flop) operator makes for a nice selection mechanism to limit the crud you have to wade through. For example: $ perl -n -e 'print if ( 1000000 .. 2000000)' humongo.txt | less This will extract everything from line 1 million to line 2 million, and allow you ...
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How can I create a link to a local file on a locally-run web page?

...filename.ext">right click </a></td> and then right click, select "copy location" option, and then paste into url. share | improve this answer | follow ...
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belongs_to through associations

... I'd like to know myself. Everything I tried fired 3 selects. You can specify a "-> { joins :something }" lambda on an association. The join is fired but subsequently another select anyway. I wasn't able to tune this up. – Renra Oct 21 ...