Retrieving an Element of an Array: Difference between revisions
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{{DeprecatedTask}} |
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'''Please do not add new code, and merge existing code to the [[Arrays]] task.''' |
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In this task, the goal is to retrieve an element of an [[array]]. |
In this task, the goal is to retrieve an element of an [[array]]. |
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==[[AppleScript]]== |
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[[Category:AppleScript]] |
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on getArrayValue(array, location) |
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-- very important -- The list index starts at 1 not 0 |
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return item location in array |
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end getArrayValue |
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==[[C]]== |
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[[Category:C]] |
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int array_index(int array[], int index) { |
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return array[index]; |
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} |
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==[[C sharp|C#]]== |
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[[Category:C sharp|C#]] |
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int getArrayValue( int values[], int index ) { |
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return values[index]; |
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} |
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==[[C plus plus|C++]]== |
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[[Category:C plus plus|C++]] |
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template<typename T> |
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T array_index(T array[], size_t index) { |
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return array[index]; |
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} |
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==[[Common Lisp]]== |
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[[Category:Common Lisp]] |
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(defun array-value (array index) |
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(aref array index)) |
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==[[mIRC]]== |
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[[Category:mIRC]] |
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'''Interpeter:''' mIRC Script Editor |
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'''Library:''' [[mArray Snippet]] |
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[[Category:mArray Snippet]] |
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alias readmyarray { echo -a $array_read(MyArray, 2, 3) } |
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==[[Perl]]== |
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[[Category:Perl]] |
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'''Interpreter:''' [[Perl]] 5.8.8 |
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$elem = $array[0]; |
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==[[PHP]]== |
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[[Category:PHP]] |
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$array = array('php', 'has', 'arrays'); |
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// First element |
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$elem = $array[0]; |
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==[[Python]]== |
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[[Category:Python]] |
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'''Interpreter:''' Python 2.5 |
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The item is an element in a list at a given index |
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item = aList[index] |
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or |
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To use a list like a stack be it FIFO/LIFO |
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aList.pop() # Pop last item in a list |
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aList.pop(0) # Pop first item in a list |
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'''Note:''' When using the pop() method, the element is removed from the list. |
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==[[Ruby]]== |
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[[Category:Ruby]] |
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ary = ['Ruby','rules','big','time'] |
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#the first element |
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element = ary[0] |
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#or |
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element = ary.first |
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# => element = 'Ruby' |
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#the last element |
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element = ary[-1] |
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#or |
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element = ary.last |
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# => element = 'time' |
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#retrieving different values at once |
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elements = ary.values_at(0,2,3) |
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# => elements = ['Ruby','big','time'] |
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#select the first element of length 3 |
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element = ary.find{|el|el.length==3} |
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# => element = "big" |
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==x86 assembly== |
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[[Category:x86 assembly]] |
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'''Assembler:''' nasm |
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mov esi, array_offset |
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mov ebx, 2 |
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mov eax, [esi+ebx*4] |
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{{array operation}} |
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Latest revision as of 15:06, 29 November 2019
Retrieving an Element of an Array was a programming task. It has been deprecated for reasons that are discussed in its talk page.
Please do not add new code, and merge existing code to the Arrays task.
In this task, the goal is to retrieve an element of an array.