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Symfony 2: How do I check if a user is not logged in inside a template?

...wer answers the OP's question, I would like to add more details. I understand the OP did not want to check roles, but I am including them so other SO users can copy and paste from this in the future. - everytime I google this, I end up here! Symfony Doc Sources: http://symfony.com/doc/current/bo...
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“Order by Col1, Col2” using entity framework

...c" ) Where IQueryable<a> is entity query, "col1 asc" is column 1 and sorting direction "col2 asc" is column 2 and sorting direction share | improve this answer | fo...
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Handling optional parameters in javascript

... You can know how many arguments were passed to your function and you can check if your second argument is a function or not: function getData (id, parameters, callback) { if (arguments.length == 2) { // if only two arguments were supplied if (Object.prototype.toString.call(param...
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Reorder levels of a factor without changing order of values

I have data frame with some numerical variables and some categorical factor variables. The order of levels for those factors is not the way I want them to be. ...
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How do I create a SHA1 hash in ruby?

... There's also Digest::SHA1.base64digest 'foo' – andrewrk Jan 14 '12 at 1:31 14 FYI: Digest i...
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Insert the carriage return character in vim

...Ctrl-V tells vi that the next character typed should be inserted literally and ctrl-m is the keystroke for a carriage return. share | improve this answer | follow ...
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How to get the start time of a long-running Linux process?

... that ps will report the date (not the time) if it wasn't started today, and only the year if it wasn't started this year. Is the precision lost forever for old processes? ...
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Which Eclipse version should I use for an Android app?

I am starting to develop Android applications. Which version of Eclipse should I use? 14 Answers ...
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How to find out how many lines of code there are in an Xcode project?

... Check out CLOC. cloc counts blank lines, comment lines, and physical lines of source code in many programming languages. (Legacy builds are archived on SourceForge.) share | impr...
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Find a pair of elements from an array whose sum equals a given number

Given array of n integers and given a number X, find all the unique pairs of elements (a,b), whose summation is equal to X. ...