C# equivalent to Javascript "push"

Question

I'm trying to convert this code over to C# and was wondering what is the equivalent to Javascript's "Array.push"? Here's a few lines of the code i'm converting:

 var macroInit1, macroInit2;
    var macroSteps = new Array();
    var i, step;

    macroInit1 = "Random String";
    macroInit2 = "Random String two";
    macroSteps.push(macroInit1 + "another random string");
    macroSteps.push(macroInit2 + "The last random string");

for (i=0; i<10; i++)
{
   for (step = 0; step < macroSteps.length; step++)
   {
     // Do some stuff 
      }
   }

Any progress with the push.js conversions? Will you opensource/share it? I'm at the same problem right now. — Jiří Herník
– Jiří Herník, Commented Sep 23, 2019 at 8:38

Darin Dimitrov · Accepted Answer · 2010-09-19 09:03:04Z

9

You could use a List<string>:

var macroInit1 = "Random String";
var macroInit2 = "Random String two";
var macroSteps = new List<string>();
macroSteps.Add(macroInit1 + "another random string");
macroSteps.Add(macroInit2 + "The last random string");
for (int i = 0; i < 10; i++)
{
    for (int step = 0; step < macroSteps.Count; step++)
    {

    }
}

Of course this code looks extremely ugly in C#. Depending on what manipulations you are performing on those strings you could take advantage of the LINQ features built into C# to convert it into a one-liner and avoid writing all those imperative loops.

This is to say that when converting source code from one language to another it's not a matter of simply searching for the equivalent data type, etc... You could also take advantage of what the target language has to offer.

edited Sep 19, 2010 at 9:03

answered Sep 19, 2010 at 8:56

Darin Dimitrov

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Comments

Mikael Dúi Bolinder · Accepted Answer · 2019-02-15 12:53:38Z

4

You can replace that either with

List<string> macroSteps for a type-safe list-of-string

or

ArrayList macroSteps. for a flexible list-of-object

or

Stack<string> macroSteps. It has .Push() and .Pop() like in JS.

edited Feb 15, 2019 at 12:53

Mikael Dúi Bolinder

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answered Sep 19, 2010 at 9:01

Henk Holterman

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1 Comment

Rune FS Over a year ago

and use .Add where you'd use Push()

Alexey Raga · Accepted Answer · 2010-09-19 10:27:29Z

2

It can be much more clean, declarative and nice in C#, for example:

//In .NET both lists and arraus implement IList interface, so we don't care what's behind
//A parameter is just a sequence, again, we just enumerate through
//and don't care if you put array or list or whatever, any enumerable
public static IList<string> GenerateMacroStuff(IEnumerable<string> macroInits) {
{
    return macroInits
                .Select(x => x + "some random string or function returns that") //your re-initialization
                .Select(x => YourDoSomeStuff(x)) //what you had in your foreach
                .ToArray();
}

And it can be used then:

var myInits = new[] {"Some init value", "Some init value 2", "Another Value 3"};
var myMacroStuff = GetMacroStuff(myInits); //here is an array of what we need

BTW, we can suggest you a solution how to "do stuff" properly and nicely if you just describe what you want, not just show us a code we don't have any clue how to use and ask how to translate it literally. Because a literal translation can be so unnatural and ugly in .NET world, and you will have to maintain this ugliness... We don't want you to be in this position :)

answered Sep 19, 2010 at 10:27

Alexey Raga

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2 Comments

Callum Rogers Over a year ago

+1 for LINQ (although it may be beyond the OP's current knowledge): Remember that you can use .Select(YourDoSomeStuff) instead of .Select(x => YourDoSomeStuff(x))

Alexey Raga Over a year ago

Yes I remember. But if you are new in LINQ it might be hard to understand that .Select(DoSomeStuff) is actually a method group.

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