0xbabe 0xBAD_A55 0c7654_1234 0b1111_0000_0101 42 42. .42 1_845.123_456 3.14e+4 4_2.5_7e-1_0 ---------------------------------------------------- [ ["number", "0xbabe"], ["number", "0xBAD_A55"], ["number", "0c7654_1234"], ["number", "0b1111_0000_0101"], ["number", "42"], ["number", "42."], ["number", ".42"], ["number", "1_845.123_456"], ["number", "3.14e+4"], ["number", "4_2.5_7e-1_0"] ] ---------------------------------------------------- Checks for hexadecimal, octal, binary and decimal numbers.