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• Maximum
  :''This page is about the primitive function. For system limits, see [[LIMIT ERROR]] and [[Maximum rank]].''
  2 KB (317 words) - 21:28, 10 September 2022
• Array notation
  z⍪← 2 'SYNTAX ERROR' z⍪← 3 'INDEX ERROR'
  15 KB (1,875 words) - 04:23, 21 September 2023
• Error trapping with Dyalog APL
  ...to forecast all errors is impossible. Therefore, implementing some kind of error trapping in an application which is supposed to run in a productive environ ...een available in [[Dyalog APL]] for a long time. When you try to implement error trapping you should be very careful: it is easy to implement a non-interrup
  32 KB (3,860 words) - 22:09, 10 September 2022
• KaiJaeger-TestPage
  ...to forecast all errors is impossible. Therefore, implementing some kind of error trapping in an application which is supposed to run in a productive environ ...een available in [[Dyalog APL]] for a long time. When you try to implement error trapping you should be very careful: it is easy to implement a non-interrup
  32 KB (3,898 words) - 10:30, 3 September 2024
• Reverse Compose
  ...e>g⍨∘f⍨</syntaxhighlight>. In [[dzaima/APL]] the monadic case is simply an error.
  3 KB (415 words) - 13:57, 28 June 2024
• Dot
  SYNTAX ERROR
  3 KB (322 words) - 22:12, 10 September 2022
• Frame agreement
  RANK ERROR assert←{0≡⍵:'error: no common frame prefix' ⎕SIGNAL 4 ⋄ ⍵}
  7 KB (779 words) - 14:23, 26 August 2023
• Lang5
  ...It allows simplistic yet effective type checking in Lang5, allowing early error prevention.
  3 KB (361 words) - 22:46, 24 January 2024
• Constant
  VALUE ERROR
  3 KB (379 words) - 22:15, 10 September 2022
• Index origin
  ...ight lang=apl inline>⎕IO</syntaxhighlight> typically results in a [[DOMAIN ERROR]].
  4 KB (518 words) - 22:05, 10 September 2022
• APL Farm
  * Off-topic (named "Index Error" on Matrix)
  3 KB (393 words) - 12:53, 31 August 2023
• Overstrike
  ...kes were allowed for the odd case where one was correcting a typographical error. For example, <syntaxhighlight lang=apl inline>F</syntaxhighlight> and <syn
  14 KB (1,453 words) - 22:10, 10 September 2022
• WPF XAML demo
  ⍝ Fixing the XAML did not work. Show an error and exit. ⎕ ← 'Error Fixing XAML'
  32 KB (4,251 words) - 13:13, 4 March 2024
• Range
  ...ntaxhighlight lang=apl inline>⍬</syntaxhighlight> or even throw a [[DOMAIN ERROR]] for <syntaxhighlight lang=apl inline>X…Y</syntaxhighlight> when <syntax
  3 KB (282 words) - 22:18, 10 September 2022
• Matrix Divide
  ⎕CT>|Y+.×X-Y×X⌹Y ⍝ ∧ is orthogonal to Y (with negligible error)
  4 KB (453 words) - 01:40, 18 March 2024
• Subtract
  In the absense of rounding error we have <syntaxhighlight lang=apl inline>-/v</syntaxhighlight> {{←→}} <
  4 KB (452 words) - 10:58, 11 September 2022
• Index Of
  ...ht lang=apl inline>(1↓⍴X)≡(1-≢⍴X)↑⍴Y</syntaxhighlight>; otherwise [[LENGTH ERROR]] is raised. J simply treats them as not found.
  4 KB (556 words) - 21:35, 10 September 2022
• GNU APL
  ...which are more commonly used by other dialects. This can lead to [[SYNTAX ERROR]]s if attempting to use code written for GNU APL in other implementations.
  4 KB (565 words) - 12:28, 22 February 2024
• Talk:Frame agreement
  ...mistake only upon encountering an example that would've produced a length error in BQN, but gave a result in J (if I recall correctly). I'm thinking this w
  3 KB (525 words) - 14:45, 12 July 2023
• Type
  ...and classes with constructors but no niladic constructor, cause a [[NONCE ERROR]].
  5 KB (491 words) - 14:28, 13 February 2023

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