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Welcome to the Illuminations!

Here you will find questions (from the Seekers of Perl Wisdom section) which have been esteemed "Good".

These questions are organized with categories (aka tags or keywords).

In addition, "good" questions can have replies likewise designated as "good" (or "best").

When you're viewing the SoPW section or the threaded view of a question, all "good"/"best" questions & answers are indicated with a nice golden star: ⭐

Good Questions in categories (arrays)


Is there an isArray() in Perl? — 4⭐ / 5
How do I loop through a list two or more elements at a time? — 4⭐ / 9
How do I find all possible combinations of a list? — 1⭐ / 3
How Do I Compare Array A to Array B, removing B elements from A. — 2⭐ / 4
How can I skip an element in an array whilst reading... — 1⭐ / 5
Count of words that match in an array — 3⭐ / 7
How can I add all the numbers in an array with out doing a foreach loop? — 6⭐ / 17
How do I free memory allocated to an array — 1⭐ / 5
How do I find if an array has duplicate elements, if so discard it? — 6⭐ / 11
How do I find the size of an array? — 1⭐ / 10
How do I find the index of the last element in an array? — 3⭐ / 6
How do I shuffle an array? — 2⭐ / 5
How do I pick a random element from an array? — 1⭐ / 3
How do I completely remove an element from an array? — 3⭐ / 14
How do I create a new array in memory? — 1⭐ / 2
How to sort array by columns maintaining the rows? (for C style arrays) — 2⭐ / 5
How do I completely empty out an array? — 3⭐ / 7
How can I find the union/difference/intersection of two arrays? — 4⭐ / 4
How to find out if X is an element in an array? — 6⭐ / 13
structured printing of arrays — 2⭐ / 2
How do I print an array with commas separating each element? — 4⭐ / 11
How can I start incrementing an index at 0? — 1⭐ / 1
How do I insert an element into an arbitrary (in range) array index? — 3⭐ / 6
How can I access the index variable in map? — 2⭐ / 2
How do I test if an array is empty or not? — 3⭐ / 5
How can I push a hash onto an array? — 2⭐ / 5
How do I multiply the corresponding elements in two arrays together? — 1⭐ / 3
How do I get the last element of an array? — 2⭐ / 4
How do I find unique Array in Array of Arrays? — 3⭐ / 5
How do i create array of arrays — 1⭐ / 3
How do I find the biggest number in an array of numbers. — 2⭐ / 10
How can I find the index of the biggest element in an array? — 3⭐ / 14
How do I find the index of a specific array value? — 6⭐ / 12
How can I display a unique array if it contains some repeated elements — 2⭐ / 5
How do I read files from a folder and place them into a list? — 2⭐ / 8
How do I Loop over multiple arrays simultaneously ? — 1⭐ / 7
How do I create a matrix? — 2⭐ / 2
How do I print a partial array? — 1⭐ / 5
How to find and remove duplicate elements from an array? — 3⭐ / 12
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