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What's the safest way to iterate through the keys of a Perl hash?
If I have a Perl hash with a bunch of (key, value) pairs, what is the preferred method of iterating through all the keys? I have heard that using each may in some way have unintended side effects. So, is that true, and is one of the two following methods best, or is there a better way?
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Remove NA values from a vector
... and I'm trying to find the max value in that vector (the vector is all numbers), but I can't do this because of the NA values.
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Return index of greatest value in an array
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This is probably the best way, since it’s reliable and works on old browsers:
function indexOfMax(arr) {
if (arr.length === 0) {
return -1;
}
var max = arr[0];
var maxIndex = 0;
for (var i = 1; i < ar...
Oracle Differences between NVL and Coalesce
Are there non obvious differences between NVL and Coalesce in Oracle?
8 Answers
8
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How to find and return a duplicate value in array
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a = ["A", "B", "C", "B", "A"]
a.detect{ |e| a.count(e) > 1 }
I know this isn't very elegant answer, but I love it. It's beautiful one liner code. And works perfectly fine unless you need to process huge data set.
Looking for fa...
How can I get the concatenation of two lists in Python without modifying either one? [duplicate]
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phoenix
3,20611 gold badge2727 silver badges3131 bronze badges
answered Dec 3 '10 at 9:17
NPENPE
41...
How to list the size of each file and directory and sort by descending size in Bash?
I found that there is no easy to get way the size of a directory in Bash?
11 Answers
1...
Using boolean values in C
C doesn't have any built-in boolean types. What's the best way to use them in C?
18 Answers
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How do I execute a program from Python? os.system fails due to spaces in path
I have a Python script that needs to execute an external program, but for some reason fails.
10 Answers
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Large Numbers in Java
How would I go about doing calculations with extremely large numbers in Java?
6 Answers
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