* Leads to fprintf to pad the output until finally it really is n characters wide, where n is definitely an integer benefit saved while in the a perform argument just previous that represented because of the modified form.
All those two replaceAll calls will usually produce the same final result, irrespective of what x is. Nonetheless, it is vital to notice that the two frequent expressions will not be exactly the same:
In a few code that I've to keep up, I've viewed a format specifier %*s . Can any one notify me what This is certainly and why it truly is utilized?
Working with %s in scanf without having an explcit industry width opens the identical buffer overflow exploit that will get did; specifically, if you'll find extra characters inside the enter stream than the target buffer is sized to hold, scanf will happily compose All those extra characters to memory outside the buffer, probably clobbering a thing important. Sadly, not like in printf, You cannot offer the sector with being a run time argument:
That is pretty conventional error-checking code for just a Python script that accepts command-line arguments.
The difference lies in the way it get's taken care of. If you would've a bunch of (by way of example) 3 Areas specifically pursuing each other s+ takes that team and turns The entire it right into a "", when s would proces just about every Room By itself.
And because your 2nd parameter is empty string "", there is not any distinction between the output of two instances.
Andrew HareAndrew Hare 351k7575 gold badges645645 silver badges641641 bronze badges 3 fifteen Observe that this sort of string interpolation is deprecated in favor of the more impressive str.format technique.
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For starters you need to realize that remaining output of each the statements are going to be exact same i.e. to get rid of many of the Areas from offered string.
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