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Stack vs heap allocation of structs in Go, and how they relate to garbage collection
I'm new to Go and I'm experiencing a bit of congitive dissonance between C-style stack-based programming where automatic variables live on the stack and allocated memory lives on the heap and and Python-style stack-based-programming where the only thing that lives on the stack are references/pointer...
Java: random long number in 0
Random class has a method to generate random int in a given range. For example:
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Reordering arrays
Say, I have an array that looks like this:
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Write bytes to file
I have a hexadecimal string (e.g 0CFE9E69271557822FE715A8B3E564BE ) and I want to write it to a file as bytes. For example,
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Fastest way to check if string contains only digits
I know a few ways how to check this.
regex, int.parse , tryparse ,looping.
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How can I get a list of locally installed Python modules?
I would like to get a list of Python modules, which are in my Python installation (UNIX server).
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Is it safe to check floating point values for equality to 0?
I know you can't rely on equality between double or decimal type values normally, but I'm wondering if 0 is a special case.
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Formatting a number with exactly two decimals in JavaScript
I have this line of code which rounds my numbers to two decimal places. But I get numbers like this: 10.8, 2.4, etc. These are not my idea of two decimal places so how I can improve the following?
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How to use hex color values
I am trying to use hex color values in Swift, instead of the few standard ones that UIColor allows you to use, but I have no idea how to do it.
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List comprehension on a nested list?
I have this nested list:
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