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How to require a controller in an angularjs directive

Can anyone tell me how to include a controller from one directive in another angularJS directive. for example I have the following code ...
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range over interface{} which stores a slice

Given the scenario where you have a function which accepts t interface{} . If it is determined that the t is a slice, how do I range over that slice? ...
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R programming: How do I get Euler's number?

For example, how would I go about entering the value e^2 in R? 3 Answers 3 ...
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Regex empty string or email

I found a lot of Regex email validation in SO but I did not find any that will accept an empty string. Is this possible through Regex only? Accepting either empty string or email only? I want to have this on Regex only. ...
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Matching a space in regex

I need to match a space character in a PHP regular expression. Anyone got any ideas? 9 Answers ...
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How can I access an object property named as a variable in php?

A Google APIs encoded in JSON returned an object such as this 5 Answers 5 ...
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How can I efficiently download a large file using Go?

Is there a way to download a large file using Go that will store the content directly into a file instead of storing it all in memory before writing it to a file? Because the file is so big, storing it all in memory before writing it to a file is going to use up all the memory. ...
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Immediate function invocation syntax

There is a JSLint option, one of The Good Parts in fact, that "[requires] parens around immediate invocations," meaning that the construction ...
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How to resize Image in Android?

I am creating an application and want to setup a gallery view. I do not want the images in the gallery view to be full size. How do I resize images in Android? ...
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Why does base64 encoding require padding if the input length is not divisible by 3?

What is the purpose of padding in base64 encoding. The following is the extract from wikipedia: 3 Answers ...