Unfortunately, bc doesn’t support scientific notation. However, it can be translated into a format that bc can handle, using extended regex as per POSIX in sed: sed -E ‘s/([+-]?[0-9.]+)[eE]\+?(-?)([0-9]+)/(\1*10^\2\3)/g’ <<<“$value” you can replace the “e” (or “e+”, if the exponent is positive) with “*10^”, which bc will promptly understand. This works even if the exponent … Read more
preg_match(‘/[^\d]+/’, $string, $textMatch); preg_match(‘/\d+/’, $string, $numMatch); $text = $textMatch[0]; $num = $numMatch[0]; Alternatively, you can use preg_match_all with capture groups to do it all in one shot: preg_match_all(‘/^([^\d]+)(\d+)/’, $string, $match); $text = $match[1][0]; $num = $match[2][0];
You can use REGEXP_LIKE: SELECT 1 FROM DUAL WHERE REGEXP_LIKE(‘23.9’, ‘^\d+(\.\d+)?$’, ”)
I believe the term you’re looking for is “suffix”. Examples: 1; // int 1.0; // double 1.0f; // float 1.0m; // decimal 1u; // uint 1L; // long 1UL; // ulong
The remarks for the BigInteger constructor state that you can make sure any BigInteger created from a byte[] is unsigned if you append a 00 byte to the end of the array before calling the constructor. Note: the BigInteger constructor expects the array to be in little-endian order. Keep that in mind if you expect … Read more
Because the language spec says so. It gives no reason, but I suspect that these are the most likely intentions: To have a small and simple set of rules to cover arithmetic operations involving all possible combinations of types To allow an efficient implementation – 32 bit integers are what CPUs use internally, and everything … Read more
I was thinking you could use a regexp_like condition and use the regular expression to find any non-numerics. I hope this might help?! SELECT * FROM table_with_column_to_search WHERE REGEXP_LIKE(varchar_col_with_non_numerics, ‘[^0-9]+’);