Usage Patterns

Command Line (WolframScript)

Use WolframScript to get your current geographical position (latitude and longitude):

$ wolframscript -code 'GeoPosition[Here]'
GeoPosition[{40.11, -88.24}]

Use a high-level machine learning function to detect the sentiment of a piece of text:

$ wolframscript -code 'Classify[ "Sentiment", "The Wolfram Engine is really cool!" ]'
Positive

Calculate the sunrise time for a city, like Chicago or New Orleans:

$ wolframscript -function "DateString[Sunrise[#]]&" -signature City -args "windy city" 
Tue 14 May 2019 05:31

Script

Give an image URL, import it and identify the content of the image:

url = InputString["Give image url: "];
image = Import[url];
entity = ImageIdentify[image];
Print["This is a: ", entity["Name"]];

$ ./image-identify.wls
Give image url: https://bengal-cat.jpg

Language Integration: Python

Set up your Wolfram Language session:

>>> from wolframclient.evaluation import WolframLanguageSession
>>> from wolframclient.language import wl, wlexpr
>>> session = WolframLanguageSession()

Evaluate any Wolfram Language code from Python:

>>> session.evaluate(wlexpr('Range[5]'))
[1, 2, 3, 4, 5]

Immediately call all 6,000+ built-in Wolfram Language functions in Python:

>>> session.evaluate(wl.MinMax([1, -3, 0, 9, 5]))
[-3, 9]

Language Integration: C++

Use the WSTP (Wolfram Symbolic Transfer Protocol) to call the Wolfram Engine from a C or C++ program:

#include "wstp.h"
/* Send an expression from C to the Wolfram Engine for evaluation */
void evaluate_expression(WSLINK lp)
{
    WSPutFunction(lp, "EvaluatePacket", 1);
    WSPutFunction(lp, "ToExpression", 1);
    WSPutString(lp, (const char *)"3+4/Sqrt[19.2]");
    WSEndPacket(lp);
}

Interactive Access

Here is an example for how to use the Wolfram Engine interactively. You can type Wolfram Language commands after each In[] prompt, and outputs appear after the corresponding Out[] prompt:

$ wolframscript
Wolfram Language 12.0.0 Engine for Microsoft Windows (64-bit)
Copyright 1988-2019 Wolfram Research, Inc.

In[1]:= url = "https://wolfr.am/Cax0fT0X";
In[2]:= image = Import[url];
In[3]:= entity = ImageIdentify[image];
In[4]:= entity["Name"]
Out[4]:= Labrador retriever

Deployment Interfaces