FindMyFriends (version 1.2.2)

.fillDefaults: Assign object defaults to missing values

Description

This function takes care of investigating the enclosing functions arguments and identifying the missing ones. If they are missing and a default is given this value is assigned to the enclosing functions environment

Usage

.fillDefaults(def)

Arguments

def

A named list of default values

Value

This function is called for its side effects

See Also

Set and get pangenome defaults with defaults

Examples

# Should only be called within methods/functions

# This will obviously fail
## Not run: 
#   t <- function(x) {
#     x+1
#   }
#   t()
# ## End(Not run)

# Using .fillDefaults
t <- function(x, defs) {
  .fillDefaults(defs)
  x+1
}

# With defaults
t(defs=list(x=5))

# Direct setting takes precedence
t(x=2, defs=list(x=5))

# Still fails if defs doesn't contain the needed parameter
## Not run: 
#   t(defs=list(y='no no'))
# ## End(Not run)

# Usually defs are derived from the object in a method:
## Not run: 
#   setMethod('fillDefExample', 'pgFull',
#     function(object, x, y) {
#       .fillDefaults(defaults(object))
#       x+y
#     }
#   )
# ## End(Not run)