Yeah though in practice it is more "write once, compile anywhere, debug everywhere" :-P as there are often minor (and sometimes major) inconsistencies between the underlying widget libraries (not Lazarus' fault though, if anything there is a lot of effort put into providing as much consistency as it can).
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The best part is that Lazarus is write once, compile anywhere. It works on all major desktop OSes and even some less mainstream ones.
Yeah though in practice it is more "write once, compile anywhere, debug everywhere" :-P as there are often minor (and sometimes major) inconsistencies between the underlying widget libraries (not Lazarus' fault though, if anything there is a lot of effort put into providing as much consistency as it can).