The 's' replaces a single Room match at any given time though the 's+' replaces The complete House sequence at once with the 2nd parameter.
In such cases, it tends to make no change, since you are replacing anything with the empty string (While it would be far better to employ s+ from an efficiency perspective). In case you were being changing with a non-empty string, The 2 would behave differently. Share Boost this remedy Abide by
so "indent" specifies how much Place to allocate for that string that follows it inside the parameter list.
five @powersource97, %.*s implies you're reading the precision price from an argument, and precision is the maximum range of figures to be printed, and %*s you will be reading through the width benefit from an argument, that's the minimal range os characters being printed.
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The 1st regex will match a person whitespace character. The 2nd regex will reluctantly match a number of whitespace people. more info For some purposes, both of these regexes are extremely equivalent, besides in the second case, the regex can match much more from the string, if it prevents the regex match from failing. from
The primary one matches an individual whitespace, Whilst the second a single matches a person or numerous whitespaces. They're the so-termed normal expression quantifiers, and so they accomplish matches like this (taken from your documentation):
char character; // merely a char one letter/within the ascii map character = 'a'; // assign 'a' to character
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this assignation can be done at initialization like char phrase="this can be a phrase" // the word variety of chars got this string now which is statically defined
If the value is bigger than four character positions vast, the sphere width expands to accommodate the suitable range of characters.
So the initial if statement translates to: in the event you haven't handed me an argument, I'll inform you how it is best to move me an argument Sooner or later, e.g. you'll see this on-screen: