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How can you find the height of text on an HTML canvas?
The spec has a context.measureText(text) function that will tell you how much width it would require to print that text, but I can't find a way to find out how tall it is. I know it's based on the font, but I don't know to convert a font string to a text height.
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JavaScript pattern for multiple constructors
I need different constructors for my instances. What is a common pattern for that?
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C++ templates that accept only certain types
In Java you can define generic class that accept only types that extends class of your choice, eg:
14 Answers
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C++: What is the size of an object of an empty class?
I was wondering what could be the size of an object of an empty class . It surely could not be 0 bytes since it should be possible to reference and point to it like any other object. But, how big is such an object?
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Coding Practices which enable the compiler/optimizer to make a faster program
Many years ago, C compilers were not particularly smart. As a workaround K&R invented the register keyword, to hint to the compiler, that maybe it would be a good idea to keep this variable in an internal register. They also made the tertiary operator to help generate better code.
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How to split a string literal across multiple lines in C / Objective-C?
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Making heatmap from pandas DataFrame
I have a dataframe generated from Python's Pandas package. How can I generate heatmap using DataFrame from pandas package.
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What's the difference between IQueryable and IEnumerable
I'm confused as to the difference. Being fairly new to .Net, I know I can query IEnumerables using the Linq extensions. So what is this IQueryable and how does it differ?
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Why doesn't django's model.save() call full_clean()?
I'm just curious if anyone knows if there's good reason why django's orm doesn't call 'full_clean' on a model unless it is being saved as part of a model form.
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How do I run msbuild from the command line using Windows SDK 7.1?
I'm setting up .NET 4.0 support on our CI server. I've installed .NET 4.0, and the .NET tools from the Windows 7.1 SDK.
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