This summer I was working on translating a project with a dozen Python classes into Javascript ES6 classes. The following are “notes to myself” about the substitutions that can be made automatically in order to speed up the translation process.
| replace all (this –> with that) |
|---|
def __init__ --> constructor |
def --> |
(self): --> (){ |
(self, --> ( |
): --> ){ |
self. --> this. |
# --> //# |
else: --> }else{ |
print( --> console.log( |
int( --> Math.floor( |
str( --> (""+ |
True --> true |
False --> false |
None --> null |
and not --> && ! |
if not --> if (! |
while true: --> while (true){ |
The following substitutions need to be made manually (one at a time).
| find and replace manually |
|---|
and --> && |
result = --> let result = |
temp = --> let temp = |
.append --> .push |
len(foo) |
for i in range( |
for each in --> for (let each of |
while |
.insert(0,"foo") --> .splice(0,0,"foo") |
a in b --> b.includes(a) |
@staticmethod \n def --> static |
@classmethod \n def --> static |
.sort(key=lambda x: x.getGrade(), reverse=False) --> .sort(function(a, b){return a.getGrade() - b.getGrade()}) |
.sort(key=lambda x: x.getGrade(), reverse=True) --> .sort(function(a, b){return b.getGrade() - a.getGrade()}) |
Notes to myself about how to setup a Java repl to work with automatic JUnit tests.
First, add junit:junit from Packages
Next, redirect the “Run” button:
Create a new .replit file and add run = "bash run.sh"
Create a new shell script run.sh and add the following lines…
javac -classpath .:/run_dir/junit-4.12.jar:/run_dir/hamcrest-core-1.3.jar:/run_dir/json-simple-1.1.1.jar -d . *.java
java -classpath .:/run_dir/junit-4.12.jar:/run_dir/hamcrest-core-1.3.jar:/run_dir/json-simple-1.1.1.jar ShoesTester
# javac *.java
# java ShoesTester
Here is a sample ShoesTester file:
import org.junit.*;
import org.junit.runner.*;
import static org.junit.Assert.*;
public class ShoesTester {
public int add3(int n) {
return n+3;
}
@Test
public void test_add3() {
assertEquals(8,add3(5));
}
@Test
public void trivial_test(){
assertTrue(5 == 2+3);
assertFalse(7 != 14/2);
}
public static void main(String[] args) {
System.out.println("Hello tests!");
org.junit.runner.JUnitCore.main("ShoesTester");
}
}
Here is the TEDIOUS process to follow to convert an old Quiz Question Bank to a new Quiz Item Bank in Canvas:
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