Add ability to have options that can be specified multiple times.

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Add ability to have options that can be specified multiple times.

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Hi Mark,

I agree that this would be a nice addition. Note that the Python gflags library 
already has this ability. Thus it would only be reasonable to support it for 
C++ as well.

I am guessing that the reason for not having it yet is that in C++ the original 
authors of the library wanted to have all flags initialized before static 
initialization time. As for a "multistring" flag, we would presumable use a STL 
vector of strings which is no POD, this would no longer be possible. I must say 
though that I am not clear why it would at all be necessary to have flags be 
initialized before static initialization. I don't think anybody should use the 
value of command-line flags in a constructor of a static object, in which case 
you can also just use another static constant for the default flag value which 
the flag will have at that time.

Andreas

Original comment by [email protected] on 7 Sep 2013 at 11:26

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Original comment by [email protected] on 20 Mar 2014 at 3:50

• Added labels: Milestone-v2.2