The 1st regex will match 1 whitespace character. The 2nd regex will reluctantly match a number of whitespace people. For many functions, both of these regexes are certainly similar, besides in the next circumstance, the regex can match a lot more of the string, if it stops the regex match from failing. from

Applying %s in scanf with out an explcit subject width opens the exact same buffer overflow exploit that gets did; particularly, if you'll find much more figures while in the input stream in comparison to the goal buffer is sized to carry, scanf will happily create Individuals excess characters to memory outdoors the buffer, perhaps clobbering a thing important. Sad to say, contrary to in printf, You can not offer the sphere with like a operate time argument:

@Ben here's an illustration of outter rates, observe that /S does practically nothing in that predicament Test it pastebin.com/raw.

Windows, which derives in the long run from CP/M and VAX, isn't going to use this system internally. On the working system, the command line is just an individual string of characters.

The width isn't laid out in the structure string, but as an additional integer benefit argument previous the argument that needs to be formatted.

These two replaceAll phone calls will always create the same final result, irrespective of what x is. However, it is necessary to notice which the two common expressions aren't precisely the same:

And hardware assets at any point even during application execution subsequently connect with method calls which simply call I/O routines coded in assembly language.

 

All machine dependent code is composed in assembly language.The assembly language is different for various processors.

Has any mass protest while in the United states right after 1945 productively pressured The federal government to vary its selection based upon the protesters' requires? additional incredibly hot concerns

So it is not eliminating rates around arguments; it's possibly eliminating rates around the route to the EXE you might be managing, or across the overall command line (or probably around the very first half in the command line, which would be weird).

@barlop, the point of /S is if you do not know upfront whether or not the command has embedded quotations or not. If there are actually accurately two offers to the command line it can be taken care of in different ways by default if you'll find precisely two quotation figures than if you'll find more or much less. /S makes it be addressed the exact same. It really is documented: Just kind "assist cmd" over the command line.

Andrew HareAndrew Hare 351k7575 gold badges644644 silver badges640640 bronze badges 3 15 more info Take note that this sort of string interpolation is deprecated in favor of the greater effective str.structure method.

All I understand is always that cmd.exe's command parsing (In particular with escaping characters) is usually bizarre sometimes, so I've no doubt that /s is beneficial in at least a person event.

This is most likely additional more likely to be appealing inside the situation within the question Michael Burr associated with, wherever cmd.exe is currently being launched by CreateProcess instead of from the batch file or the command line alone..

The PEP doesn't say "supplanted" As well as in no Portion of the PEP will it say the % operator is deprecated (but it does say other factors are deprecated down the bottom). You might want str.structure and that's high-quality, but till there is a PEP indicating it really is deprecated there is not any sense in professing it is actually when it isn't.