Top "Notation" questions

What exactly does += do in python?

I need to know what += does in python. It's that simple. I also would appreciate links to definitions of other …

python operators notation shorthand compound-assignment

What does %w(array) mean?

I'm looking at the documentation for FileUtils. I'm confused by the following line: FileUtils.cp %w(cgi.rb complex.rb …

ruby arrays string notation

What is the difference between Θ(n) and O(n)?

Sometimes I see Θ(n) with the strange Θ symbol with something in the middle of it, and sometimes just O(n). …

big-o time-complexity notation big-theta

What exactly does big Ө notation represent?

I'm really confused about the differences between big O, big Omega, and big Theta notation. I understand that big O …

algorithm computer-science big-o notation big-theta

What do numbers using 0x notation mean?

What does a 0x prefix on a number mean? const int shared_segment_size = 0x6400; It's from a C program. …

c integer hex notation

conversion from infix to prefix

I am preparing for an exam where i couldn't understand the convertion of infix notation to polish notation for the …

algorithm prefix notation

1e-9 or -1e9, which one is correct?

I am assigned some old code and when I was reading through it, I noticed it had these in the …

c++ math floating-point notation exponential

Convert Scientific Notation to Float

Encountered a problem whereby my JSON data gets printed as a scientific notation instead of a float. import urllib2 import …

python decimal notation

Powershell: Two dimension arrays

The following works as expected: $values = @( ("a", "b"), ("c", "d") ) foreach($value in $values) { write-host "Value 0 =" $value[0] write-host "Value 1 =" $value[1] } …

arrays powershell notation

How to express numbers in scientific notation in java?

I'm writing a program that deals with planets' mass and diameter; These quantities are expressed in scientific notation. My question …

java numbers notation scientific-notation