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What is a 'semantic predicate' in ANTLR?

... instead of a parser rule) that will match numbers in the range of 0..999. Now in the parser, you'd like to make a distinction between low- and hight numbers (low: 0..500, high: 501..999). This could be done using a disambiguating semantic predicate where you inspect the token next in the stream (in...
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Is pass-by-value a reasonable default in C++11?

... void foo(T const&); and void foo(T&&);. With that in mind, I now wrote my valued constructors as such: class T { U u; V v; public: T(U u, V v) : u(std::move(u)) , v(std::move(v)) {} }; Otherwise, passing by reference to const still is reasonable. ...
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Should methods in a Java interface be declared with or without a public access modifier?

...hat there are other options and so it shouldn't be there. The fact is that now with Java 9 and beyond there ARE other options. I think instead Java should enforce/require 'public' to be specified. Why? Because the absence of a modifier means 'package' access everywhere else, and having this as a s...
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What is the difference between Sublime text and Github's Atom [closed]

... @emrah Yes. Sublime Text is written in C++ and Python. (even google knows that) :P – pradyunsg May 16 '15 at 14:33 ...
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Check if checkbox is checked with jQuery

...type="checkbox" name="chk[]" value="Bananas" /> </fieldset> And now the jQuery: var atLeastOneIsChecked = $('#checkArray:checkbox:checked').length > 0; //there should be no space between identifier and selector // or, without the container: var atLeastOneIsChecked = $('input[name="c...
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DataSet panel (Report Data) in SSRS designer is gone

... the actual report layout itself. Click inside the actual report layout. Now select "View" from the main menu bar. Now select "Report Data" which is the last item. share | improve this answer ...
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Unique Key constraints for multiple columns in Entity Framework

... With Entity Framework 6.1, you can now do this: [Index("IX_FirstAndSecond", 1, IsUnique = true)] public int FirstColumn { get; set; } [Index("IX_FirstAndSecond", 2, IsUnique = true)] public int SecondColumn { get; set; } The second parameter in the attribu...
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How to get a time zone from a location using latitude and longitude coordinates?

...n R-Tree Find the nearest city with MySQL Please update this list if you know of any others Also, note that the nearest-city approach may not yield the "correct" result, just an approximation. Conversion To Windows Zones Most of the methods listed will return an IANA time zone id. If you need to c...
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Have a div cling to top of screen if scrolled down past it [duplicate]

...ed; top: 0; } EDIT- Modified code to cache jQuery objects, faster now. share | improve this answer | follow | ...
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Codeigniter - no input file specified

...s inside my public_html folder back to original .htaccess content. So it's now as follows (which is originally it was): DirectoryIndex index.php RewriteEngine on RewriteCond $1 !^(index\.php|images|css|js|robots\.txt|favicon\.ico) RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !...