Jos van Uden wrote: > bool isPangram
The presented code is not an acceptable example for the usage of the D programming language. 1) `indexOf( s, c)' has a worst case running time of O( `s.length'). `indexOf' is called once for each `c' in the used member `alpha' of `Alphabet'. Therefore the runtime of the presented code is O( `s.length' * `alpha.length') whereas O( `s.length' + `alpha.length') is possible. 2) The optional third parameter of `indexOf' can be called with `CaseSensitive.no'. But that parameter is left untouched. Instead a check with `toUpper( c)' is used, thereby risking a further visitation of the whole string . 3) The use of the literal value `-1' stands out of the code and hints to a maldesign in phobos. This is because `-1' is not mnemonic. -manfred