Execute Function with Temporary Options

Setting and resetting options is lengthy in command mode. WithOptions() allows to evaluate a function with temporary set options.

WithOptions(optlist, expr)

Arguments

optlist

a list with new option settings.

expr

the expression to be evaluated

Value

the function result

Author

Thomas Lumley <t.lumley@auckland.ac.nz>

See also

options, getOption

Examples

# original:
print((1:10)^-1)
#>  [1] 1.000 0.500 0.333 0.250 0.200 0.167 0.143 0.125 0.111 0.100

# with new options
WithOptions(list(digits=3), print((1:10)^-1))
#>  [1] 1.000 0.500 0.333 0.250 0.200 0.167 0.143 0.125 0.111 0.100