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'''dfns.dws''' is a workspace which is supplied together with [[Dyalog APL]]. It's is a collection of examples of programming in [[dfn|direct functions]], which were written by multiple people since 1990s. | '''dfns.dws''' is a [[workspace]] which is supplied together with [[Dyalog APL]]. It's is a collection of examples of programming in [[dfn|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 user meeting|Dyalog '09]].<ref>[[Dyalog user meeting|Dyalog '09]] C03: Introduction to D-Functions (dfns) ([https://dyalog.tv/Dyalog09/?v=OZARVrGQQho Video 1 (124 mins)], [https://dyalog.tv/Dyalog09/?v=RQNSe9s_3eE Video 2 (67 mins)])</ref> | Late [[John Scholes]] was the editor of this workspace. He presented a talk about the contents of the workspace at [[Dyalog user meeting|Dyalog '09]].<ref>[[Dyalog user meeting|Dyalog '09]] C03: Introduction to D-Functions (dfns) ([https://dyalog.tv/Dyalog09/?v=OZARVrGQQho Video 1 (124 mins)], [https://dyalog.tv/Dyalog09/?v=RQNSe9s_3eE Video 2 (67 mins)])</ref> | ||
== Example usage == | == Example usage == | ||
As with other workspaces, workspace <source lang=text inline>dfns</source> can be copied into the current workspace using [[system | As with other workspaces, workspace <source lang=text inline>dfns</source> can be copied into the current workspace using the [[Quad name|system function]] <source lang=apl inline>⎕CY</source>: | ||
<source lang=apl> | <source lang=apl> | ||
⎕CY'dfns' | |||
⍝ Example call: timing an expression using function `cmpx` | ⍝ Example call: timing an expression using function `cmpx` | ||
| Line 12: | Line 12: | ||
0.0001302490234375 | 0.0001302490234375 | ||
</source> | </source> | ||
Copying in only one or more specific functions is done by adding a left [[argument]]: | |||
<source lang=apl> | |||
'dec' 'hex'⎕CY'dfns' | |||
hex 1234 | |||
04d2 | |||
dec '04d2' | |||
1234 | |||
</source> | |||
It can also be used to import the entire workspace into a utility [[namespace]]: | |||
<source lang=apl> | <source lang=apl> | ||
{(⍎⍵⎕NS⍬).⎕CY ⍵}'dfns' | {(⍎⍵⎕NS⍬).⎕CY ⍵}'dfns' | ||