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== Unique features == | == Unique features == | ||
Despite its similarity However, it also differed in quite a few details:<ref>[[wikipedia:Burroughs Corporation|Burroughs Corporation]]. [http://www.softwarepreservation.org/projects/apl/Manuals/APL700UserReferenceManual User Reference Manual] (5000813). 1975.</ref> | Despite its similarity However, it also differed in quite a few details:<ref>[[wikipedia:Burroughs Corporation|Burroughs Corporation]]. [http://www.softwarepreservation.org/projects/apl/Manuals/APL700UserReferenceManual User Reference Manual] (5000813). 1975.</ref> | ||
* The statement separator was a semicolon (< | * The statement separator was a semicolon (<syntaxhighlight lang=apl inline>;</source>) rather than the conventional diamond <syntaxhighlight lang=apl inline>⋄</source> and statements in such a so-called ''list'' were evaluated from right to left, much as if the semicolon was the Left [[identity]] function (<syntaxhighlight lang=apl inline>⊣</source>). | ||
* In primitive pairs with both a last and first [[axis]] version, for example < | * In primitive pairs with both a last and first [[axis]] version, for example <syntaxhighlight lang=apl inline>/</source> vs <syntaxhighlight lang=apl inline>⌿</source> and <syntaxhighlight lang=apl inline>⌽</source> vs <syntaxhighlight lang=apl inline>⊖</source>, the first axis version would use the [[function axis]] syntax to indicate the applicable axis counted from the ''last'' axis rather than from the first axis. For example <syntaxhighlight lang=apl inline>⊖[1]</source> was equivalent to <syntaxhighlight lang=apl inline>⌽</source> just like <syntaxhighlight lang=apl inline>⌽[1]</source> was equivalent to <syntaxhighlight lang=apl inline>⊖</source>. | ||
* While in general reduction using scalar functions were supported by for arrays of a compatible data type (numeric or character), < | * While in general reduction using scalar functions were supported by for arrays of a compatible data type (numeric or character), <syntaxhighlight lang=apl inline>=/</source> and <syntaxhighlight lang=apl inline>≠/</source> did not support character data. | ||
* APL/700 included [[modified assignment]], but the pass-through value was the new value of the updated array. | * APL/700 included [[modified assignment]], but the pass-through value was the new value of the updated array. | ||
* More [[set functions]] were included than even modern APLs have. In particular < | * More [[set functions]] were included than even modern APLs have. In particular <syntaxhighlight lang=apl inline>⊂</source> and <syntaxhighlight lang=apl inline>⊂</source> were Subset and Superset, though not strict subset and superset, but rather as <syntaxhighlight lang=apl inline>{∧/(,⍺)∊(,⍵)}</source> and <syntaxhighlight lang=apl inline>{∧/(,⍵)∊(,⍺)}</source>. All the set functions except for Membership were defined in terms of the [[ravel]] of the arguments, and thus always returned a [[vector]]. Furthermore, [[Union]] (<syntaxhighlight lang=apl inline>∪</source>), [[Intersection]] (<syntaxhighlight lang=apl inline>∩</source>), and [[Set difference]] (<syntaxhighlight lang=apl inline>~</source>) returned only [[Unique]] elements, that is, a vector with no duplicates. | ||
* Format < | * Format <syntaxhighlight lang=apl inline>⍕</source> allowed an advanced formatting specification through a character left argument. | ||
* Many additional [[quad name]]s were available, including a set of two-letter system functions with all the combinations of S/R/Q (for Stop, Reset, Query) with T/S/M (Trace, Stop, Monitor), and character constants for control characters (< | * Many additional [[quad name]]s were available, including a set of two-letter system functions with all the combinations of S/R/Q (for Stop, Reset, Query) with T/S/M (Trace, Stop, Monitor), and character constants for control characters (<syntaxhighlight lang=apl inline>⎕B</source>, <syntaxhighlight lang=apl inline>⎕L</source>, <syntaxhighlight lang=apl inline>⎕R</source>, <syntaxhighlight lang=apl inline>⎕T</source>, and <syntaxhighlight lang=apl inline>⎕N</source> for Backspace, Linefeed, Return, Tab, and Null), the [[digits]] <syntaxhighlight lang=apl inline>⎕D</source>, and the [[alphabet]] (<syntaxhighlight lang=apl inline>⎕A</source>). | ||
* In a manner similar to, but more extensively than the much later [[APLX]], APL/700 had [[primitive function]]s for file operations. In addition to < | * In a manner similar to, but more extensively than the much later [[APLX]], APL/700 had [[primitive function]]s for file operations. In addition to <syntaxhighlight lang=apl inline>⍇</source> and <syntaxhighlight lang=apl inline>⍈</source> for read and write operations (as in APLX), it supported the following: | ||
** < | ** <syntaxhighlight lang=apl inline>⍍</source> to create, rename and change password for files, and <syntaxhighlight lang=apl inline>⍔</source> for deleting files. | ||
** < | ** <syntaxhighlight lang=apl inline>⍃</source> and <syntaxhighlight lang=apl inline>⍄</source> were used to read+pop and append components to the beginning and end of a file, respectively. | ||
** Equivalents of normal primitive functions for operations on component of files as if they were elements of a vectors: < | ** Equivalents of normal primitive functions for operations on component of files as if they were elements of a vectors: <syntaxhighlight lang=apl inline>⍐</source> and <syntaxhighlight lang=apl inline>⍗</source> acted like [[Take]] and [[Drop]] (<syntaxhighlight lang=apl inline>↑</source> and <syntaxhighlight lang=apl inline>↓</source>). <syntaxhighlight lang=apl inline>⌼</source> would [[Reverse]] and [[Rotate]] (<syntaxhighlight lang=apl inline>⌽</source>). <syntaxhighlight lang=apl inline>⍁</source> and <syntaxhighlight lang=apl inline>⍂</source> were [[Compress]] and [[Expand]] (<syntaxhighlight lang=apl inline>/</source> and <syntaxhighlight lang=apl inline>\</source>). | ||
** < | ** <syntaxhighlight lang=apl inline>⍓</source> and <syntaxhighlight lang=apl inline>⍌</source> and <syntaxhighlight lang=apl inline>⍗</source> were used to hold, free, and release a file. | ||
** < | ** <syntaxhighlight lang=apl inline>⌸</source> and <syntaxhighlight lang=apl inline>⍯</source> returned maps for non-null and null components, respectively. | ||
** < | ** <syntaxhighlight lang=apl inline>⌻</source> provided meta information about a file or the file system. | ||
== References == | == References == | ||
<references/> | <references/> | ||
{{APL dialects}}[[Category:APL dialects]][[Category:Flat array languages]] | {{APL dialects}}[[Category:APL dialects]][[Category:Flat array languages]] |