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Whats the difference between str. isdigit (), isnumeric () and . . . s isdigit() s isnumeric() s isdecimal() I always get as output either all True or all False for each value of s (which is a string) What's the difference between the three? Can you provide an example that gives two True s and one False (or vice versa)?
R regular expressions: unexpected behavior of [:digit:] I'd like to extract elements beginning with digits from a character vector but there's something about POSIX regular expression syntax that I don't understand I would think that vec lt;- c("01
python - Does \d in regex mean a digit? - Stack Overflow 123 Only 1 and 3 are matched by the regex \d; 2 is not Generally for a sequence of digit numbers without other characters in between, only the odd order digits are matches, and the even order digits are not For example in 12345, the matches are 1, 3 and 5
Sorting 1 million 8-decimal-digit numbers with 1 MB of RAM 1M of RAM means 2^20 bytes? And how many bits are in a byte on this architecture? And is the "million" in "1 million 8 digit decimal numbers" a SI million (10^6)? What is a 8 digit decimal number, a natural number < 10^8, a rational number whose decimal representation takes 8 digits excluding the decimal point, or something else?
Difference between Char. IsDigit() and Char. IsNumber() in C# This contrasts with IsDigit, which determines if a Char is a radix-10 digit Valid numbers are members of the following categories in UnicodeCategory: DecimalDigitNumber Decimal digit character, that is, a character in the range 0 through 9 Signified by the Unicode designation "Nd" (number, decimal digit) The value is 8 LetterNumber