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How to construct a timedelta object from a simple string

I'm writing a function that needs a timedelta input to be passed in as a string. The user must enter something like "32m" or "2h32m", or even "4:13" or "5hr34m56s"... Is there a library or something that has this sort of thing already implemented? ...
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Variable declaration placement in C

I long thought that in C, all variables had to be declared at the beginning of the function. I know that in C99, the rules are the same as in C++, but what are the variable declaration placement rules for C89/ANSI C? ...
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When to use inline function and when not to use it?

I know that inline is a hint or request to compiler and its used to avoid function call overheads. 14 Answers ...
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What is the purpose of the “final” keyword in C++11 for functions?

What is the purpose of the final keyword in C++11 for functions? I understand it prevents function overriding by derived classes, but if this is the case, then isn't it enough to declare as non-virtual your final functions? Is there another thing I'm missing here? ...
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Clojure: reduce vs. apply

I understand the conceptual difference between reduce and apply : 9 Answers 9 ...
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Passing variable arguments to another function that accepts a variable argument list

So I have 2 functions that both have similar arguments 9 Answers 9 ...
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Readonly Properties in Objective-C?

I have declared a readonly property in my interface as such: 7 Answers 7 ...
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What is the difference between LR, SLR, and LALR parsers?

What is the actual difference between LR, SLR, and LALR parsers? I know that SLR and LALR are types of LR parsers, but what is the actual difference as far as their parsing tables are concerned? ...
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Learning Python from Ruby; Differences and Similarities

I know Ruby very well. I believe that I may need to learn Python presently. For those who know both, what concepts are similar between the two, and what are different? ...
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How to timeout a thread

I want to run a thread for some fixed amount of time. If it is not completed within that time, I want to either kill it, throw some exception, or handle it in some way. How can it be done? ...