tests if value is "blank"

tests if value is one of several falsy values.

applies a value when piped value is_empty ( as defined by present?/1 )

##Example:

taxrate_item =

taxrates[taxkey]
|> if_empty(%{tax: "0", net: "0", gross: "0"})
|> taxrate_item_append(create_taxrate_stats_entry_for_item(item))

applies a value when piped value is nil

##Example:

get_max_order_id() |> if_nil(1000)

simple pipeable logger.

setting a loglevel is mandatory

order |> MavuUtils.log("trying to finish order #{order.id}", :info) |> finish_order()

macro to only apply a function within a pipe if a condition equals to true.

the conditional gets passed to true?/1 first

##Example:

|> pipe_when(
    item[:taxrate],
    update_in([:taxrates], &update_taxrate_stats(&1, item))
  )

tests if value is "non-blank"

tries to convert any value to integer

returns integer on success, nil on failure

tests if value is one of several truthy values and not false?/1