C++ – how to find the length of an integer
Not necessarily the most efficient, but one of the shortest and most readable using C++: std::to_string(num).length()
numbers
Is it possible to make VIM display line numbers?
Do :set number to display line numbers.
C: how to break apart a multi digit number into separate variables?
int value = 123; while (value > 0) { int digit = value % 10; // do something with digit value /= 10; }
What is the maximum value of a number in Lua?
as compiled by default, the Number is a double, on most compilers that’s an IEEE 64-bit floating point. that means 10bit exponent, so the maximum number is roughly 2^1024, or 5.6e300 years. that’s a long time. now, if you’re incrementing it, you might be more interested in the integer range. the 52-bit mantissa means that … Read more
Is there a Java library for unsigned number type wrappers? [closed]
When I needed this functionality inside of jOOQ, I haven’t found anything like it, so I rolled my own Open Source library that I call jOOU (U for Unsigned): http://github.com/jOOQ/jOOU I understand that some may think this is overkill, but I’d really like to have precisely those wrappers wrapping what other languages call ubyte, ushort, … Read more
How to implement negative infinity in python?
Python has special values float(‘inf’) and float(‘-inf’).
‘e’ in javascript numbers
4e4 is a floating-point number representation. It consists of: Sign – S(+ or -) Mantissa – M(some number, normalized: 1.x where x is some sequence of digits) Exponent – E(represents a power of 10 that is Mantissa(M) multiplied with) It is also a way of how floating-point numbers are stored on the system. For instance, … Read more
oracle varchar to number
You have to use the TO_NUMBER function: select * from exception where exception_value = to_number(‘105’)
Javascript: Comparing two float values [duplicate]
toFixed returns a string, and you are comparing the two resulting strings. Lexically, the 1 in 12 comes before the 7 so 12 < 7. I guess you want to compare something like: (Math.round(parseFloat(acVal)*100)/100) which rounds to two decimals