HasTable to store (key,value) pair in OpenFOAM

adib_mohammad · December 4, 2022, 13:21

Does HashTable allow creating (key, value) pairs and accessing the value by key as well as iterating through the items in the object?

I need keys of word type and values of label.

I could not find a useful sample usage in the source code.

olesen · December 11, 2022, 09:53

I suggest you dig a bit more in the code, there are plenty of places using HashTable with a word key (the default) and some type of value (integer or otherwise).

The iterator is a bit special (ie, different than std map etc) in that you would use its key(), val() methods to get the pair of key and value, and its normal dereference operator returns the val() and not the pair.

December 4, 2022, 13:21	HasTable to store (key,value) pair in OpenFOAM	#1
adib_mohammad New Member Join Date: Jan 2015 Posts: 22 Rep Power: 11	Does HashTable allow creating (key, value) pairs and accessing the value by key as well as iterating through the items in the object? I need keys of word type and values of label. I could not find a useful sample usage in the source code.

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December 11, 2022, 09:53		#2
olesen Senior Member Mark Olesen Join Date: Mar 2009 Location: https://olesenm.github.io/ Posts: 1,714 Rep Power: 40	I suggest you dig a bit more in the code, there are plenty of places using HashTable with a word key (the default) and some type of value (integer or otherwise). The iterator is a bit special (ie, different than std map etc) in that you would use its key(), val() methods to get the pair of key and value, and its normal dereference operator returns the val() and not the pair.