std string length and size member functions

Question

I was reading the answers for this question and found that there is actually a method called length   for std  string  I always used size     Is there any specific reason for having this method in std  string class  I read both MSDN and CppRefernce  and they seem to indicate that there is no difference between size   and length    If that is so  isn t it making more confusing for the user of the class

User · Answer

Ruby s just the same  btw  offering both  length and  size as synonyms for the number of items in arrays and hashes  C   only does it for strings    Minimalists and people who believe  there ought to be one  and ideally only one  obvious way to do it   as the Zen of Python recites  will  I guess  mostly agree with your doubts   Naveen  while fans of Perl s  There s more than one way to do it   or SQL s syntax with a bazillion optional  noise words  giving umpteen identically equivalent syntactic forms to express one concept  will no doubt be complaining that Ruby  and especially C    just don t go far enough in offering such synonymical redundancy -

User · Answer

As per the documentation  these are just synonyms   size   is there to be consistent with other STL containers  like vector  map  etc   and length   is to be consistent with most peoples  intuitive notion of character strings   People usually talk about a word  sentence or paragraph s length  not its size  so length   is there to make things more readable

User · Answer

When using coding practice tools LeetCode  it seems that size   is quicker than length    although basically negligible

User · Answer

length of string   how many bits that string having    size  size of those bits  In strings both are same if the editor allocates size of character is 1 byte

[c++] std::string length() and size() member functions

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