The 's' replaces 1 Area match at a time however the 's+' replaces The entire space sequence at the same time with the 2nd parameter.
Those people two replaceAll calls will constantly develop the identical end result, in spite of what x is. Nevertheless, it is important to notice which the two common expressions will not be exactly the same:
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Applying %s in scanf without having an explcit subject width opens exactly the same buffer overflow exploit that gets did; namely, if you will discover much more characters from the enter stream than the goal buffer is sized to carry, scanf will Fortunately compose Individuals further figures to memory exterior the buffer, likely clobbering something essential. Regrettably, contrary to in printf, You cannot offer the sector with like a run time argument:
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The 1st regex will match one whitespace character. The second regex will reluctantly match a number of whitespace people. For some uses, both of these regexes are really very similar, except in the next circumstance, the regex can match far more of the string, if it prevents the regex match from failing. from
The 1st a single matches one whitespace, whereas the second one particular matches one or a lot of whitespaces. They are the so-termed typical expression quantifiers, plus they accomplish matches like this (taken in the documentation):
char character; // merely a char one letter/with the ascii map character = 'a'; // assign 'a' to character
The PEP does not say "supplanted" and in no A part of the PEP will it say the % operator is deprecated (however it does say other matters are deprecated down the bottom). You might desire str.format and that's great, but right up until there is a PEP stating it is actually deprecated there is no feeling in claiming it here truly is when it's not.
The many illustrations given down below use arrays which has not been taught yet, so I am assuming I am unable to use %s yet either.
The width is not laid out in the format string, but as an additional integer benefit argument preceding the argument that has to be formatted.
If the worth to get output is lower than four character positions broad, the worth is right justified in the sector by default.
If the worth is greater than 4 character positions huge, the field width expands to accommodate the suitable range of characters.
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