call.Rmd

---
title: "call Call julia functions."
output: html_document
---

```{r setup, include=FALSE}
knitr::opts_chunk$set(echo = TRUE)
library(JuliaCall)
```



#### Description

julia_do.call is the do.call for julia. And julia_call calls julia functions.

#### Usage
<pre><code>
julia_do.call(func_name, arg_list, need_return = c("R", "Julia", "None"),vshow_value = FALSE)

julia_call(func_name, ..., need_return = c("R", "Julia", "None"),vshow_value = FALSE)
</code></pre>
#### Arguments
* func_name the name of julia function you want to call.
* arg_list the list of the arguments you want to pass to the julia function.
* need_return whether you want julia to return value as an R object, a wrapper for julia object or no return. The value of need_return could be TRUE (equal to option "R") or FALSE (equal to option "None"), or one of the options "R", "Julia" and "None".
* show_value whether to display julia return value or not.
* ... the arguments you want to pass to the julia function.

#### Details
Note that named arguments  will be discarded if the call uses dot notation, for example, "sqrt.".

#### Examples
```{r}

## julia_setup is quite time consuming
julia_do.call("sqrt", list(2))
julia_call("sqrt", 2)
```