Execute: Difference between revisions

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* [https://help.dyalog.com/latest/#Language/Primitive%20Functions/Execute.htm Dyalog]
* [https://help.dyalog.com/latest/#Language/Primitive%20Functions/Execute.htm Dyalog]
* [http://microapl.com/apl_help/ch_020_020_710.htm APLX]
* [http://microapl.com/apl_help/ch_020_020_710.htm APLX]
* J [https://www.jsoftware.com/help/dictionary/d601.htm Dictionary], [https://code.jsoftware.com/wiki/Vocabulary/quotedot NuVoc]  
* J [https://www.jsoftware.com/help/dictionary/d601.htm Dictionary], [https://code.jsoftware.com/wiki/Vocabulary/quotedot NuVoc] (as <source lang=j inline>".</source>)
{{APL built-ins}}[[Category:Primitive functions]]
{{APL built-ins}}[[Category:Primitive functions]]

Revision as of 05:11, 25 May 2021

⍎

Execute (⍎) is a primitive function that evaluates a string as APL code.

It should be noted that executing user-provided data is not safe. Some implementations provide alternative safe functionality through the system functions Verify Input (⎕VI) and Fix Input (⎕FI)or the combined function Verify and Fix Input (⎕VFI).

Examples

      ⍎'⍳10'
1 2 3 4 5 6 7 8 9 10

A common use for this is to assign a value using a name given by a variable: 

      varName←'myVar'
      myValue←42
      {⍎varName,'←⍵'}myValue
      varName
myVar
      myVar
42

See also

External links

Tutorials

Documentation

APL built-ins [edit]
Primitives (Timeline) Functions
Scalar
Monadic Conjugate ∙ Negate ∙ Signum ∙ Reciprocal ∙ Magnitude ∙ Exponential ∙ Natural Logarithm ∙ Floor ∙ Ceiling ∙ Factorial ∙ Not ∙ Pi Times ∙ Roll ∙ Type ∙ Imaginary ∙ Square Root ∙ Round
Dyadic Add ∙ Subtract ∙ Times ∙ Divide ∙ Residue ∙ Power ∙ Logarithm ∙ Minimum ∙ Maximum ∙ Binomial ∙ Comparison functions ∙ Boolean functions (And, Or, Nand, Nor) ∙ GCD ∙ LCM ∙ Circular ∙ Complex ∙ Root
Non-Scalar
Structural Shape ∙ Reshape ∙ Tally ∙ Depth ∙ Ravel ∙ Enlist ∙ Table ∙ Catenate ∙ Reverse ∙ Rotate ∙ Transpose ∙ Raze ∙ Mix ∙ Split ∙ Enclose ∙ Nest ∙ Cut (K) ∙ Pair ∙ Link ∙ Partitioned Enclose ∙ Partition
Selection First ∙ Pick ∙ Take ∙ Drop ∙ Unique ∙ Identity ∙ Stop ∙ Select ∙ Replicate ∙ Expand ∙ Set functions (Intersection ∙ Union ∙ Without) ∙ Bracket indexing ∙ Index ∙ Cartesian Product ∙ Sort
Selector Index generator ∙ Grade ∙ Index Of ∙ Interval Index ∙ Indices ∙ Deal ∙ Prefix and suffix vectors
Computational Match ∙ Not Match ∙ Membership ∙ Find ∙ Nub Sieve ∙ Encode ∙ Decode ∙ Matrix Inverse ∙ Matrix Divide ∙ Format ∙ Execute ∙ Materialise ∙ Range
Operators Monadic Each ∙ Commute ∙ Constant ∙ Replicate ∙ Expand ∙ Reduce ∙ Windowed Reduce ∙ Scan ∙ Outer Product ∙ Key ∙ I-Beam ∙ Spawn ∙ Function axis ∙ Identity (Null, Ident)
Dyadic Bind ∙ Compositions (Compose, Reverse Compose, Beside, Withe, Atop, Over) ∙ Inner Product ∙ Determinant ∙ Power ∙ At ∙ Under ∙ Rank ∙ Depth ∙ Variant ∙ Stencil ∙ Cut ∙ Direct definition (operator) ∙ Identity (Lev, Dex)
Quad names Index origin ∙ Comparison tolerance ∙ Migration level ∙ Atomic vector
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