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Keys <code>≤0</code> will be omitted. | Keys <code>≤0</code> will be omitted. | ||
The function then processes each group in order. The result depends on what the function is. | The function then processes each group in order. The result depends on what the function is. | ||
If the function takes 0 or 1 arguments, then <code>⊜ partition</code> behaves like ≡ rows. This is called iterating <code>⊜ partition.</code> | If the function takes 0 or 1 arguments, then <code>⊜ partition</code> behaves like <code>≡ rows</code>. This is called iterating <code>⊜ partition.</code> | ||
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==== Inversion Modifiers ==== | ==== Inversion Modifiers ==== | ||
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| <code>∘</code> || [[Identity]] || Monadic function || Do nothing with one value | | <code>∘</code> || [[Identity]] || Monadic function || Do nothing with one value | ||
|- | |- | ||
| | | <code>⋅</code> || [[Gap]] || Monadic modifier || Discard the top stack value then call a function | ||
|- | |||
| <code>⊙</code> || [[Dip]] || Monadic modifier || Temporarily pop the top value off the stack and call a function | |||
|- | |||
| <code>∩</code> || [[Both]] || Monadic 2-argument modifier || Call a function on two sets of values | |||
For monadic functions, <code>∩ both</code> calls its function on each of the top 2 values on the stack. | |||
|- | |||
| <code>⊃</code> || [[Fork]] || Dyadic modifier || Call two functions on the same values | |||
<code>⊃ fork</code> is one of the most important functions for working with the stack. | |||
|- | |||
| <code>⪾</code> || <span style="color:black; background-color: yellow">🧪[[Cascade]] || Dyadic modifier || 🧪Call one function after another, reusing some values | |||
<code>⪾ cascade</code>'s second function is called, then its first argument(s) are reused, along with its output, as arguments to the first function. | |||
|- | |||
| <code>⊓</code> || [[Bracket]] || Dyadic modifier || Call two functions on two distinct sets of values | |||
|- | |||
| <code>⋔</code> || 🧪[[All]] || Dyadic modifier || 🧪Call a function on many distinct sets of values | |||
For just 2 sets of values, <code>∩ both</code> is often simpler. | |||
The second function will be called, then the first function will be called on groups of values. | |||
To do something similar to ∩ both on more than 2 sets of values, you can use <code>⊙ dip</code> and <code>∘</code> identity to select values. | |||
|} | |} | ||
== External links == | == External links == | ||