isValidSymbol 1.0

ISVALIDSYMBOL - Check string to be a valid Matlab symbolThis function is equivalent to Matlab's ISVARNAME, but accepts cell strings as input also. While the speed is comparable for strings, it is *much* faster for cell strings (see screenshot).L = isValidSymbol(S)INPUT: S: String or cell string.OUTPUT: L: LOGICAL scalar, if S is a string. LOGICAL array of the same size as S for a cell string. L is TRUE for valid symbols: The 1st character must be a letter, the following must be a letter, number or the underscore. The length must not exceed 63 characters.EXAMPLES: isValidSymbol('a') % >> true isValidSymbol('a1') % >> true isValidSymbol('a_') % >> true isValidSymbol({'_a', 'b'}) % >> [false, true] isValidSymbol('1a') % >> false s = repmat('a', 1, 63); isValidSymbol(s) % >> true isValidSymbol([s, 'a']) % >> falseAIM OF THIS SUBMISSION:Actually the C subfunction "CheckCString" was developed to support the safe creation of structs and MAT files in C-Mex functions. You can easily include the test to your Mex-projects - just remove the main function "mexFunction".For checking Matlab strings the conversion to a C-string wastes time. Therefore the subfunction "CheckMatlabString" operates on the mxChar-vector directly.You can accelerate Matlab's slow GENVARNAME remarkably by calling this function instead of a loop over ISVARNAME calls.

Requirements:	No special requirements
Platforms:	Matlab
Keyword:	Checkcstring,  Creation,  Developed,  Easily,  Files,  Functions,  Include,  Structs,  Subfunction,  Support
Users rating:	0/10