The 1st regex will match just one whitespace character. The second regex will reluctantly match a number of whitespace figures. For many reasons, both of these regexes are certainly similar, apart from in the second scenario, the regex can match additional of your string, if it helps prevent the regex match from failing. from
Applying %s in scanf without having an explcit industry width opens the same buffer overflow exploit that gets did; particularly, if there are actually a lot more figures during the enter stream compared to focus on buffer is sized to hold, scanf will happily produce those added figures to memory outdoors the buffer, most likely clobbering a little something essential. Unfortunately, as opposed to in printf, You cannot provide the field with as being a run time argument:
@Ben here's an example of outter offers, observe that /S does nothing in that condition Attempt it pastebin.com/raw.
Home windows, which derives in the long run from CP/M and VAX, won't use this system internally. To the functioning process, the command line is just a single string of people.
char character; // just a char 1 letter/from your ascii map character = 'a'; // assign 'a' to character
Why is definitely the deletion ungrammatical in "I such as the Lady [that is] the prettiest in my class" but grammatical in other sentences?
That way it could stand on its own. Delivering an case in point which was similar to the instance while in the query would even be a additionally.
The very first one matches one whitespace, whereas the next 1 matches just one or numerous whitespaces. They are the so-known as common expression quantifiers, and they conduct matches like this (taken from the documentation):
This is often pretty standard error-checking code for any Python script that accepts command-line arguments.
and so these files aren't the same as C code data files. Take note that C documents is often inlined with assembly Directions.
This executes SomeCommand.exe redirecting regular output to some temp file and normal error to exactly the same location:
@barlop, the point of /S is that if you do not know beforehand whether the command has embedded estimates or not. If you will find precisely two estimates on the command line it is addressed otherwise by default if here you will discover just two quote people than if you can find a lot more or much less. /S causes it to be be treated a similar. It's documented: Just sort "aid cmd" on the command line.
Andrew HareAndrew Hare 351k7575 gold badges644644 silver badges640640 bronze badges three 15 Observe that this kind of string interpolation is deprecated in favor of the greater powerful str.format process.
So When you've got a sophisticated command which you want to go to CMD.exe you both have to keep in mind CMD's argument quoting regulations, and properly escape all the rates, or use /S, which triggers a Particular non-parsing rule of "Strip 1st and previous " and handle all other figures because the command to execute unchanged".
.S information are supply code data files created in assembly. Assembly is a very small-level kind of programming. The documents comprise assembly Directions on the processor in sequential buy and are generally compiled depending on a specific architecture.
Is there some subtlety to /s that's eluding me? When wouldn't it ever be necessary? When would it not even make any big difference?