Amend: Difference between revisions
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{{primitive|@[x;y[;z]; |
{{primitive|@[x;y[;f];z]<br>@[x;y;f[;z]]}} |
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'''Amend''' is a special form of the <code>@</code> verb which takes multiple arguments. |
'''Amend''' is a special form of the <code>@</code> verb which takes multiple arguments. |
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== ngn/k == |
== ngn/k == |
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ngn/k's amend has <code> |
ngn/k's amend has <code>z</code> as the optional argument, instead of having <code>f</code> as an optional argument. |
Revision as of 05:59, 26 November 2021
Amend
@[x;y[;f];z]
@[x;y;f[;z]]
@[x;y;f[;z]]
Amend is a special form of the @
verb which takes multiple arguments.
Amend takes 3 or 4 arguments, where:
x
is an array to amendy
is the index(or indices) to amendz
(optional), is the function to apply to those indicesu
is the second argument toz
3 argument amend always acts as an element replacement function, since z
is :
if it is omitted.
x
can be a value or a symbol. If given a symbol, amend will modify the variable that is indicated by the symbol.
v:1 2 3 v 1 2 3 @[v;1;3] 1 3 3 v 1 2 3 @[`v;1;3]; v 1 2 3
ngn/k
ngn/k's amend has z
as the optional argument, instead of having f
as an optional argument.