The 's' replaces just one House match at any given time though the 's+' replaces the whole House sequence at once with the next parameter.

These two replaceAll phone calls will constantly generate the identical outcome, despite what x is. On the other hand, it is crucial to notice the two frequent expressions are certainly not the identical:

In a few code that I've to keep up, I've witnessed a format specifier %*s . Can any individual explain to me what This really is and why it is actually applied?

Using %s in scanf with no an explcit field width opens precisely the same buffer overflow exploit that receives did; namely, if you will discover more characters while in the enter stream compared to the goal buffer is sized to carry, scanf will Fortunately generate These added figures to memory exterior the buffer, most likely clobbering something essential. However, contrary to in printf, You cannot offer the sector with being a run time argument:

This really is quite normal mistake-examining code for any Python script that accepts command-line arguments.

The real difference lies in the best way it get's dealt with. Should you would have a gaggle of (for example) three spaces directly following one another s+ normally takes that group and turns The complete it into a "", whilst s would proces every House on its own.

 

And because your second parameter is empty string "", there's no distinction between the output of two scenarios.

How do I keep away from Performing time beyond regulation resulting from children's deficiency of arranging with no harming them also badly?

 

The width is just not specified in the structure string, but as a further integer worth argument preceding the argument that should be formatted.

If the value being output is below four character positions huge, the value is correct justified in the field by default.

If the value is bigger than four character positions vast, the sphere width expands to support the appropriate amount of characters.

So the primary if assertion translates to: should you haven't more info passed me an argument, I'll show you how you'll want to go me an argument Sooner or later, e.g. you'll see this on-screen: