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What is Double Brace initialization in Java?

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Django, creating a custom 500/404 error page

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What's the best way to check if a String represents an integer in Java?

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How to get evaluated attributes inside a custom directive

...cess them in our directives postlink method, they are already compiled. ({{1+1}} is 2 in directive already). This is how you would want to use: var myApp = angular.module('myApp',[]); myApp.directive('myDirective', function ($parse) { return function (scope, element, attr) { element.val...
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How do I change the data type for a column in MySQL?

... http://dev.mysql.com/doc/refman/5.1/en/alter-table.html ALTER TABLE tablename MODIFY columnname INTEGER; This will change the datatype of given column Depending on how many columns you wish to modify it might be best to generate a script, or use some kind of...
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How to get milliseconds from LocalDateTime in Java 8

I am wondering if there is a way to get current milliseconds since 1-1-1970 (epoch) using the new LocalDate , LocalTime or LocalDateTime classes of Java 8. ...
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Ruby: Change negative number to positive number?

... 271 Using abs will return the absolute value of a number -300.abs # 300 300.abs # 300 ...
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Why does the MongoDB Java driver use a random number generator in a conditional?

...t this piece of code amounts to if (!_ok && Math.random() <= 0.1) return res; The commit that originally introduced this logic had if (_ok == true) { _logger.log( Level.WARNING , "Server seen down: " + _addr, e ); } else if (Math.random() < 0.1) { _logger.log( Level.WARNING , ...
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iPhone UIView Animation Best Practice

... 118 From the UIView reference's section about the beginAnimations:context: method: Use of this...