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Rails check if yield :area is defined in content_for

...ering at the layout level based on the actual template has defined content_for(:an__area) , any idea how to get this done? ...
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How to throw std::exceptions with variable messages?

...atter & operator << (const Type & value) { stream_ << value; return *this; } std::string str() const { return stream_.str(); } operator std::string () const { return stream_.str(); } enum ConvertToString { to_str };...
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Formatting text in a TextBlock

...w do I achieve formatting of a text inside a TextBlock control in my WPF application? 6 Answers ...
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Accept function as parameter in PHP

... Prior to 5.3 you can use create_function – Gordon Apr 23 '10 at 17:01 Than...
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What is the pythonic way to avoid default parameters that are empty lists?

... def my_func(working_list=None): if working_list is None: working_list = [] working_list.append("a") print(working_list) The docs say you should use None as the default and explicitly test for it in the body ...
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How do I search for an object by its ObjectId in the mongo console?

...est.find() // no criteria { "_id" : ObjectId("4ecc05e55dd98a436ddcc47c"), "x" : 1 } > db.test.find({"_id" : ObjectId("4ecc05e55dd98a436ddcc47c")}) // explicit { "_id" : ObjectId("4ecc05e55dd98a436ddcc47c"), "x" : 1 } > db.test.find(ObjectId...
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GPU Emulator for CUDA programming without the hardware [closed]

...nstalled it and tried to run a simple program: #include <stdio.h> __global__ void helloWorld() { printf("Hello world! I am %d (Warp %d) from %d.\n", threadIdx.x, threadIdx.x / warpSize, blockIdx.x); } int main() { int blocks, threads; scanf("%d%d", &blocks, &thr...
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Cannot push to Heroku because key fingerprint

I am new to Rails, and I was trying to deploy a very simple app to Heroku. This is the second app that I deploy, and the first one I was able to do it just fine. However I am having some issues with this one. Whenever I " git push heroku master ", I get this error: ...
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passing 2 $index values within nested ng-repeat

...relevant controller for that menu item by passing in the $index to let the app know which one we need. However I need to also pass in the $index from the outer ng-repeat so the app knows which section we are in as well as which tutorial. ...
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How to check an Android device is HDPI screen or MDPI screen?

... Density values described at: developer.android.com/guide/practices/screens_support.html – esilver Jan 21 '14 at 21:52 1 ...