Amend: Difference between revisions
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{{primitive|@[x;y[;z
'''Amend''' is a special form of the <code>@</code> verb which takes multiple arguments.
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* <code>x</code> is an array to amend
* <code>y</code> is the index(or indices) to amend
* <code>z</code>(optional), is the function to
* <code>u</code> is
3 argument amend always acts as an element replacement function, since <code>z</code> is [[right|<code>:</code>]] if it is omitted.
<code>x</code> can be a value or a symbol. If given a symbol, amend will modify the variable that is indicated by the symbol.
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v
1 2 3
@[v;1
1 3 3
v
1 2 3
@[`v;1
v
1 2 3</pre>
== ngn/k ==
ngn/k's amend has <code>u</code> as the optional argument, instead of having <code>z</code> as an optional argument.
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Revision as of 05:57, 8 October 2021
Amend
@[x;y[;z];u]
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 u
as the optional argument, instead of having z
as an optional argument.