User command

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User commands[1] or user-defined commands[2] are a way for a user to introduce new commands in addition to system commands.

The benefit of using user commands is that they can be executed without having to explicitly copy their code into the active workspace.[1]

APL user commands start with a right bracket, e.g., ]yourcommand.

In Dyalog APL, many useful user commands are included into the distribution, e.g., ]boxing on, ]plot, etc. Special command ] -? allows to see a full list of user commands.

External links

APL syntax [edit]
General Comparison with traditional mathematicsPrecedenceTacit programming
Array Numeric literalStringStrand notationObject literalArray notation
Function ArgumentFunction valenceDerived functionDerived operatorNiladic functionMonadic functionDyadic functionAmbivalent functionDefined function (traditional)DfnFunction train
Operator OperandOperator valenceTradopDopDerived operator
Assignment MultipleIndexedSelectiveModified
Other Function axisBranchQuad nameSystem commandUser commandKeywordDot notationFunction-operator overloadingControl structure