Group:
naming
Topic:
attribute-value pairs as information
Topic:
function syntax definition
Topic:
namespace
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Summary
A procedure call associates arguments with parameters usually by position in a comma list. Sometimes operation words or noise words are interspersed with arguments. Free format specification is provided by keywords or parameter names. Despite their readability and default values, keywords have not been widely adapted. They are especially clumsy when used for one argument procedures. Some programming systems allow both positional and keyword arguments. (cbb 5/80)
Subtopic: keyword selectors 
| Quote: Smalltalk identifies keyword selectors by a trailing colon; concatenates them
| | Quote: the selector of a Smalltalk message can be keywords before each argument [»xlrg8_1981]
| | Quote: XPOP uses blanks, noise words, and cue words to convert statements to operator/operand form [»halpMI1_1968, OK]
| | Quote: a data file without names is meaningless; a NAMELIST gives the name for each data item [»branR9_1981]
| | QuoteRef: franN8_1977 ;;605 differentiate between value and name keyword parameters by call P (name-key = arg1... value-key:=arg2)
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Subtopic: operators
| QuoteRef: gescCM6_1975 ;;37 v.rho <-r is seen as rho[v,r] and looks for a procedure rho with appropriate types. also a+b is plus[a,b]
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Subtopic: macro calls
| Quote: instead of parameters, a macro can use its left and right context; arbitrary modifications (search outward from call) [»granCA12_1971, OK]
| | QuoteRef: browPJ10_1967 ;;619 macro calls start and end with a name followed by arguments separated by deliminators with alternatives
| | QuoteRef: memorex ;;10-2 macro call formats: macro operands (can also reference the label on the macro call), either positional or keyword (a default
| | QuoteRef: browPJ10_1967 ;;622 key arguments to deliminators and may test for argument deliminators present
| | QuoteRef: bennRK6_1968 ;;4-3 key word quotes for fixed length by keyword to indicate a position and a keyword terminator eg for i=1 to 10 by 2 do == for (i,1,10,2)
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Subtopic: operand list
| QuoteRef: memorex ;;10-8 comma list with parentheses bracketing is an operand sublist. &arg1(2) is the second sub-operand
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Subtopic: problems with keywords
Quote: keyword arguments are most useful in poorly written code; functions should have at most two arguments
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Related Topics
Group: naming (32 topics, 789 quotes)
Topic: attribute-value pairs as information (57 items)
Topic: function syntax definition (17 items)
Topic: namespace
(19 items)
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