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Allowed characters in Linux environment variable names
What characters are allowed in Linux environment variable names? My cursory search of man pages and the web did only produce information about how to work with variables, but not which names are allowed.
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Obtaining a powerset of a set in Java
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26 Answers
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When to use Task.Delay, when to use Thread.Sleep?
Are there good rule(s) for when to use Task.Delay versus Thread.Sleep ?
5 Answers
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How to find all occurrences of an element in a list?
index() will just give the first occurrence of an item in a list. Is there a neat trick which returns all indices in a list for an element?
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How do I format a string using a dictionary in python-3.x?
I am a big fan of using dictionaries to format strings. It helps me read the string format I am using as well as let me take advantage of existing dictionaries. For example:
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Javascript - Append HTML to container element without innerHTML
I need a way to append HTML to a container element without using innerHTML. The reason why I do not want to use innerHTML is because when it is use like this:
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UIButton: Making the hit area larger than the default hit area
I have a question dealing with UIButton and its hit area. I am using the Info Dark button in interface builder, but I am finding that the hit area is not large enough for some people's fingers.
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How does a hash table work?
I'm looking for an explanation of how a hash table works - in plain English for a simpleton like me!
15 Answers
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Unresolved specs during Gem::Specification.reset:
When launching Guard, I'm getting this output:
9 Answers
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Writing to an Excel spreadsheet
I am new to Python. I need to write some data from my program to a spreadsheet. I've searched online and there seem to be many packages available (xlwt, XlsXcessive, openpyxl). Others suggest to write to a .csv file (never used CSV and don't really understand what it is).
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