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What is the meaning of the term “free function” in C++?

While reading the documentation for boost::test, I came across the term "free function". What I understand is that a free function is any function that doesn't return anything (Its return type is void). But after reading further it seems that free functions also don't take any arguments. But I am no...
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Format floats with standard json module

I am using the standard json module in python 2.6 to serialize a list of floats. However, I'm getting results like this: ...
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Intercepting links from the browser to open my Android app

I'd like to be able to prompt my app to open a link when user clicks on an URL of a given pattern instead of allowing the browser to open it. This could be when the user is on a web page in the browser or in an email client or within a WebView in a freshly-minted app. ...
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Unique constraint that allows empty values in MySQL

I have a field that stores product codes. The codes are unique, but some products simply doesn't have a code. I can't invent codes because those are providers codes. ...
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json_encode() escaping forward slashes

I'm pulling JSON from Instagram: 5 Answers 5 ...
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Show and hide a View with a slide up/down animation

I have a LinearLayout that I want to show or hide with an Animation that pushes the layout upwards or downwards whenever I change its visibility. ...
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Handling a Menu Item Click Event - Android

I want to create an intent that starts a new activity once a Menu Item is clicked, but I'm not sure how to do this. I've been reading through the android documentation, but my implementation isn't correct..and some guidance in the right direction would help. I've listed my code below and commented o...
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Rails 4: before_filter vs. before_action

In rails >4.0.0 generators creates CRUD operations with before_action not before_filter . It seems to do the same thing. So what's the difference between these two? ...
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How can I disable the Maven Javadoc plugin from the command line?

In pom.xml I have declaration like this 5 Answers 5 ...
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increase legend font size ggplot2

Is there a way to increase the font size in ggplot2 ? I think I need to specify something like legend.key.width = unit(2, "line") in the theme function, but that is used to adjust the keys in legends, not the font sizes. Thanks! ...