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↑ extended to be Outfix can do more than such idioms would allow. For example, (⊂4 ¯1)↑'Racecar' would give 'Racer', but more importantly, the extension of ↓ to Infix would allow ⌺ to work on small arguments: {∊⍕¨'('⍺'↓'⍵' → '(⍺↓⍵)')'}⌺5⍳5 (2↓0 0 1 2 3 → 1 2 3) (1↓0 1 2 3 4 → 1 2 3 4) (0↓1 2 3 4 5 → ...

I've long been contemplating extending Take and Drop to also be Outfix and Infix functions (what you're computing here is an infix). It would work by allowing every scalar in the traditional left argument to also be a two-element vector of a non-negative and non-positive number. This way, we can ...

You can also use the fastest fourier transformation in the world, available through a library: https://github.com/dyalog/math?tab=read ... le#fourier

Does your keyboard have an Fn key? If so, then it might also have Fn-lock functionalty, often accesed via Fn+Esc or a dedicated key. It is usually labelled "FnLock" or "ⒻLock" or similar. When active, it swaps meaning so that plain F-keys are shortcut keys to applications, multimedia, and other f ...

ray wrote:I was surprised by this Domain Error, but got round it easily, so it is not an actual problem for me.

You don't detail how you go around it, but I imagine that this will work:

'ps'#.⎕NA'Winmm.dll|mciSendStringW <0t >0t i U'

Maybe I'm missing something here, but for this specific case (doubling the imaginary part), the following would seem sufficient and fairly efficient: ⎕←vec←0J220+⍳5 1J220 2J220 3J220 4J220 5J220 (+⍨-9∘○) vec 1J440 2J440 3J440 4J440 5J440 {⍵+⍵-9○⍵} vec ⍝ if you don't want tacit 1J440 2J440 3J440 4J440 ...

I also frequently search the session.

The current Find dialog is entirely a subset of the Find/Replace dialog which can be brought up everywhere with RP. Any improvements done to the Finddialog should happen to the Find/Replace dialog too.

Not really, but FT does the trick if you don't have additional subwindows like TreeView open.

Since the current Find dialog is entirely a subset of the Find/Replace dialog, I propose repurposing SC to jump to/from the QuickSearch and removing the Find dialog altogether.

∇∇ is especially useful when normalising or iterating operands, most commonly with array operands, but it can also happen with function operands: The right operand of Rank (⍤) is normalised to ⌽3⍴⌽ so one could imagine an implementation of Rank or a similar operator containing the guard 2≥≢⍵⍵:⍺(⍺⍺∇∇( ...

If you use ⍞← instead of ⎕ then you can simply compress the output away: x←42 debug←0 ⍞←debug/'Value x is',x,⎕UCS 10 debug←1 ⍞←debug/'Value x is',x,⎕UCS 10 If you do this often, then consider defining a helper function: Val←{debug/'Value ',⍵,', is',(⍎⍵),⎕UCS 10} debug←0 ⍞←Val'x' debug←1 ⍞←Val'x' Valu ...