Type:	Package
Title:	Infix and Postfix Logic Operators
Version:	0.1.0.1
Maintainer:	Andrew Redd <Andrew.Redd@hsc.utah.edu>
Description:	Provides adds postfix and infix logic operators for if, then, unless, and otherwise.
Language:	en-US
License:	GPL-2
Encoding:	UTF-8
LazyData:	true
Suggests:	testthat, covr
URL:	https://github.com/RDocTaskForce/postlogic
BugReports:	https://github.com/RDocTaskForce/postlogic/issues
NeedsCompilation:	no
Packaged:	2019-12-18 09:12:45 UTC; hornik
Author:	Andrew Redd [aut, cre]
Repository:	CRAN
Date/Publication:	2019-12-18 09:15:26 UTC

Postfix if-otherwise logic

Description

This construction allows logical statements to be placed after the value to be returned. Take note that the ' as other custom infix operators and so care should be taken that the effect is as desired.

Usage

prior %if% proposition

prior %if% proposition %otherwise% alternate

Arguments

See Also

Other postlogic: unless-then

Examples

    x <- 1
    x <- (x+1) %if% is.numeric(x) %otherwise% "Hmm this isn't right O.o"
    x # 2

    x <- 1i
    x <- (x+1) %if% is.numeric(x) %otherwise% "Hmm this isn't right O.o"
    x # Hmm this isn't right

Infix unless-then logic

Description

These give logic that can be used as a qualifying statement that occurs after the value statement. Take note that the ' as other custom infix operators and so care should be taken that the effect is as desired.

Usage

prior %unless% proposition
prior %unless% proposition %then% alternate

Arguments

See Also

Other postlogic: if-otherwise

Examples

    x <- 4
    x <- sqrt(x) %unless% is.complex(x) %then% "This is too hard :("
    x # 2

    x <- 4i
    x <- sqrt(x) %unless% is.complex(x) %then% "This is too hard :("
    x # This is too hard :(