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How to round a number to significant figures in Python
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You can use negative numbers to round integers:
>>> round(1234, -3)
1000.0
Thus if...
Peak signal detection in realtime timeseries data
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Small Haskell program compiled with GHC into huge binary
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215
Let's see what's going on, try
$ du -hs A
13M A
$ file A
A: ELF 64-bit LSB executa...
Why is it slower to iterate over a small string than a small list?
... on a list of small single character strings. Any explanation? It's almost 1.35 times as much time.
3 Answers
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Why `null >= 0 && null
I had to write a routine that increments the value of a variable by 1 if its type is number and assigns 0 to the variable if not, where the variable is initially null or undefined .
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Is this a “good enough” random algorithm; why isn't it used if it's faster?
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14 Answers
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Dynamically select data frame columns using $ and a character value
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185
You can't do that kind of subsetting with $. In the source code (R/src/main/subset.c) it state...
Find XOR of all numbers in a given range
...u are given a large range [a,b] where 'a' and 'b' can be typically between 1 and 4,000,000,000 inclusive. You have to find out the XOR of all the numbers in the given range.
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