Differences between revisions 2 and 3

DyalogMigrationLevels

The system variable ⎕ML determines the degree of compatability of Dyalog APL towards IBM's APL2. In general, the value 0 represents "native Dyalog". The higher the value, the closer to APL2/

For the time being (2009), 3 is the highest level of compatability one can achieve.

Note that with a default installation ⎕ML is set to 1.

ML setting	APL	Remarks
`⎕ML←0`		Native Dyalog (Default)
`⎕ML←1`	`∊R`	Monadic `∊` is interpreted as 'enlist' rather than 'type'
`⎕ML←2`	`↑R`	Monadic `↑` is interpreted as 'first' rather than 'mix'
	`⊃R`	Monadic `⊃` is interpreted as 'mix' rather than 'first'
	`≡R`	For an array with unequal levels of nesting in its subarrays, depth returns the maximum level of nesting. With `⎕ml≤2` depth returns a negative value if the subarrays have unequal depth
`⎕ML←3`	`X⊂[K]Y`	Dyadic `⊂` follows the APL2 rather than the original Dyalog convention
	`⎕TC`	The order of the elements of `⎕TC` is the same as in APL2

CategoryDyalog

-  ⇤ ← Revision 2 as of 2009-07-30 09:43:24 → 
  Size: 1250
  Editor: KaiJaeger
  Comment:
+   ← Revision 3 as of 2017-07-06 07:57:41 → ⇥
  Size: 1251
  Editor: AdámBrudzewsky
  Comment: default 1, fix typo
-Deletions are marked like this.
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-Note that with a default installation `⎕ML` is set to `0`.
+Note that with a default installation `⎕ML` is set to `1`.
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-||      || `L≡R`  || For an array with unequal levels of nesting in its subarrays,<<BR>>depth returns the maximum level of nesting.  With `⎕ml≤2` <<BR>>depth returns a negative value if the subarrays have unequal depth||
+||      || `≡R`  || For an array with unequal levels of nesting in its subarrays,<<BR>>depth returns the maximum level of nesting.  With `⎕ml≤2` <<BR>>depth returns a negative value if the subarrays have unequal depth||