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Counting array elements in Python [duplicate]
How can I count the number of elements in an array, because contrary to logic array.count(string) does not count all the elements in the array, it just searches for the number of occurrences of string.
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Easy way to print Perl array? (with a little formatting)
Is there an easy way to print out a Perl array with commas in between each element?
11 Answers
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Ruby: What is the easiest way to remove the first element from an array?
Lets say I have an array
11 Answers
11
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Is there auto type inferring in Java?
...type in Java. The same loop can be achieved as:
for ( Object var : object_array)
System.out.println(var);
Java has local variables, whose scope is within the block where they have been defined. Similar to C and C++, but there is no auto or register keyword. However, the Java compiler will not a...
How to get a number of random elements from an array?
I am working on 'how to access elements randomly from an array in javascript'. I found many links regarding this. Like:
Get random item from JavaScript array
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How to return a result from a VBA function
...ue -- but e.g. if the return type is Variant and your goal is to return an array then something like ReDim test(1 to 100) will trigger an error. Also, even though it is possible to treat basic type like Integers like that it is considered somewhat unidiomatic. It makes the code harder to read. VBA p...
How can I initialize an ArrayList with all zeroes in Java?
It looks like arraylist is not doing its job for presizing:
5 Answers
5
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Creating a Pandas DataFrame from a Numpy array: How do I specify the index column and column headers
I have a Numpy array consisting of a list of lists, representing a two-dimensional array with row labels and column names as shown below:
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Strange, unexpected behavior (disappearing/changing values) when using Hash default value, e.g. Hash
...ult value that is subsequently mutated (e.g. hashes and strings), not just arrays.
TL;DR: Use Hash.new { |h, k| h[k] = [] } if you want the most idiomatic solution and don’t care why.
What doesn’t work
Why Hash.new([]) doesn’t work
Let’s look more in-depth at why Hash.new([]) doesn’t...
How to check identical array in most efficient way? [duplicate]
I want to check if the two arrays are identical
(not content wise, but in exact order).
2 Answers
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