Difference between revisions of "Array.$$$()"
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(Created page with "Array.$$$(Function|Array of Functions[,param1,param2,...]) This returns the result of each column of the Array being operated on by the function or array of functions passed...") |
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| − | Array.$$$(Function|Array of Functions[,param1,param2,...]) | + | *[[ Z3 | << Z3 Home ]] |
| + | *[[ Z%5E3_Language_Documentation | Z3 Language Documentation]] | ||
| + | *[[ Z%5E3_Array_Manipulation_Member_Functions | Listing of Z3 Array Manipulation Member Functions]] | ||
| + | |||
| + | ==Array.$$$(Function|Array of Functions[,param1,param2,...]) == | ||
This returns the result of each column of the Array being operated on by the function or array of functions passed. The parameters provided following the function/function array is passed to the function with each column as the first parameter. Used for aggregate functions or functions that apply on each column (such as a vertical spreadsheet calculation). | This returns the result of each column of the Array being operated on by the function or array of functions passed. The parameters provided following the function/function array is passed to the function with each column as the first parameter. Used for aggregate functions or functions that apply on each column (such as a vertical spreadsheet calculation). | ||
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gives row wise sums of each row. | gives row wise sums of each row. | ||
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| + | Functions can be defined as a string with a variable, say, x. The following shows a calculation done in each column by subracting second from the first element in each column. | ||
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| + | a.$$$("[x[2],x[0],x[2]-x[0]]") | ||
| + | |||
| + | {| class="wikitable"|- | ||
| + | | | ||
| + | {| class="wikitable"|- | ||
| + | | 9 || 1 || 8 | ||
| + | |} | ||
| + | |||
| + | |- | ||
| + | | | ||
| + | {| class="wikitable"|- | ||
| + | | 10 || 2 || 8 | ||
| + | |} | ||
| + | |||
| + | |- | ||
| + | | | ||
| + | {| class="wikitable"|- | ||
| + | | 1 || 3 || -2 | ||
| + | |} | ||
| + | |||
| + | |- | ||
| + | | | ||
| + | {| class="wikitable"|- | ||
| + | | 2 || 4 || -2 | ||
| + | |} | ||
| + | |||
| + | |} | ||
Latest revision as of 10:24, 1 March 2017
Array.$$$(Function|Array of Functions[,param1,param2,...])
This returns the result of each column of the Array being operated on by the function or array of functions passed. The parameters provided following the function/function array is passed to the function with each column as the first parameter. Used for aggregate functions or functions that apply on each column (such as a vertical spreadsheet calculation).
For example, a=|4,4,1..10|
| 1 | 2 | 3 | 4 |
| 5 | 6 | 7 | 8 |
| 9 | 10 | 1 | 2 |
| 3 | 4 | 5 | 6 |
a.$$$(SUM)
| 18 |
| 22 |
| 16 |
| 20 |
gives row wise sums of each row.
Functions can be defined as a string with a variable, say, x. The following shows a calculation done in each column by subracting second from the first element in each column.
a.$$$("[x[2],x[0],x[2]-x[0]]")
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