Apply a callback to an array: Difference between revisions
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</pre>
=={{header|Binary Lambda Calculus}}==
In the lambda calculus, we can map over a list as in https://github.com/tromp/AIT/blob/master/lists/map.lam, which gives the following BLC program to negate every bit of input:
<pre>010001101000000101100000000001011000000101111111010110010111111101111110111010</pre>
=={{header|BQN}}==
<syntaxhighlight lang="bqn">Square ← ט
array ← 2‿3‿5‿7‿11‿13
Square¨ array</syntaxhighlight>
The use of the ¨ modifier is the general approach, but actually not necessary with arithmetic functions.
{{out}}
<pre>⟨ 4 9 25 49 121 169 ⟩</pre>
=={{header|Bracmat}}==
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=={{header|Elena}}==
ELENA
<syntaxhighlight lang="elena">import system'routines;
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public program()
{
new int[]{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}.forEach
}</syntaxhighlight>
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=={{header|langur}}==
<syntaxhighlight lang="langur">writeln map
{{out}}
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=={{header|Wren}}==
<syntaxhighlight lang="
arr = arr.map { |x| x * 2 }.toList
arr = arr.map(Fn.new { |x| x / 2 }).toList
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