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Difference between local and global indexes in DynamoDB

...ndary index is considered "global" because queries on the index can span all of the data in a table, across all partitions. Local secondary index — an index that has the same hash key as the table, but a different range key. A local secondary index is "local" in the sense that every p...
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live output from subprocess command

... file descriptor (in POSIX at least). (Side note: PIPE and STDOUT are actually ints internally, but are "impossible" descriptors, -1 and -2.) A stream—really, any object with a fileno method. Popen will find the descriptor for that stream, using stream.fileno(), and then proceed as for an int va...
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How to pass object with NSNotificationCenter

...when you do the addObserver(). The receiveTestNotification should only be called when observing a specific notification. – Johan Karlsson Feb 17 '16 at 15:06 1 ...
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Returning JSON from a PHP Script

... While you're usually fine without it, you can and should set the Content-Type header: <?php $data = /** whatever you're serializing **/; header('Content-Type: application/json'); echo json_encode($data); If I'm not using a particular fra...
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is there a post render callback for Angular JS directive?

...s not a result of Angular but rather the browser. $timeout(fn) ultimately calls setTimeout(fn, 0) which has the effect interrupting the Javascript execution and allowing the browser to render the content first, before continuing the execution of that Javascript. – parliament ...
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Big-O for Eight Year Olds? [duplicate]

...ore about what this means to my code. I understand the concepts mathematically, I just have a hard time wrapping my head around what they mean conceptually. For example, if one were to perform an O(1) operation on a data structure, I understand that the number of operations it has to perform won't...
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DefaultInlineConstraintResolver Error in WebAPI 2

...traintResolver that Web API ships with does not have an inline constraint called string. The default supported ones are the following: // Type-specific constraints { "bool", typeof(BoolRouteConstraint) }, { "datetime", typeof(DateTimeRouteConstraint) }, { "decimal", typeof(DecimalRouteConstraint) }...
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How to get started on TDD with Ruby on Rails? [closed]

...the concepts (took testing classes in college), but I am not sure how to really use them yet since I never worked on a "real" TDD project. ...
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How to debug Lock wait timeout exceeded on MySQL?

In my production error logs I occasionally see: 11 Answers 11 ...
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Why, Fatal error: Class 'PHPUnit_Framework_TestCase' not found in …?

...g the most recent PHPUnit version on their PHP 7 builds. My fix was to manually download an old phar and use that instead. – DisgruntledGoat Mar 13 '17 at 17:12 2 ...