Dfns workspace
dfns.dws is a workspace which is supplied together with Dyalog APL. It's is a collection of examples of programming in direct functions, which were written by multiple people since 1990s.
Late John Scholes was the editor of this workspace. He presented a talk about the contents of the workspace at Dyalog '09.[1]
Example usage
As with other workspaces, workspace dfns can be copied into the current workspace using the system function ⎕CY:
⎕CY'dfns'
⍝ Example call: timing an expression using function `cmpx`
1 cmpx '((1e6∘|2∘×)⍣871) 1'
0.0001302490234375
Copying in only one or more specific functions is done by adding a left argument:
'dec' 'hex'⎕CY'dfns'
hex 1234
04d2
dec '04d2'
1234
It can also be used to import the entire workspace into a utility namespace:
{(⍎⍵⎕NS⍬).⎕CY ⍵}'dfns'
⍝ Example call: calendar function from the new namespace
dfns.cal 2021 12
December 2021
Su Mo Tu We Th Fr Sa
1 2 3 4
5 6 7 8 9 10 11
12 13 14 15 16 17 18
19 20 21 22 23 24 25
26 27 28 29 30 31
Referrences
- ↑ Dyalog '09 C03: Introduction to D-Functions (dfns) (Video 1 (124 mins), Video 2 (67 mins))
External links
- dfns.dyalog.com – website generated based on the contents of this workspace.
| APL development [edit] | |
|---|---|
| Interface | Session ∙ Typing glyphs (on Linux) ∙ Fonts ∙ Text editors |
| Publications | Introductions ∙ Learning resources ∙ Simple examples ∙ Advanced examples ∙ Mnemonics ∙ ISO 8485:1989 ∙ ISO/IEC 13751:2001 ∙ A Dictionary of APL ∙ Case studies ∙ Documentation suites ∙ Books ∙ Papers ∙ Videos ∙ APL Quote Quad ∙ Vector journal ∙ Terminology (Chinese, German) ∙ Neural networks ∙ Error trapping with Dyalog APL (in forms) |
| Sharing code | Backwards compatibility ∙ APLcart ∙ APLTree ∙ APL-Cation ∙ Dfns workspace ∙ Tatin ∙ Cider |
| Implementation | Resources ∙ Open-source ∙ Magic function ∙ Performance ∙ APL hardware |
| Developers | Timeline of corporations ∙ APL2000 ∙ Dyalog ∙ IBM ∙ IPSA ∙ STSC |