CODEWITHSUNDEEP
c#stringconstructor
mike00
mike00

Reputation: 448

Will a literal string assignment call the String constructor like this?

Out of curiosity, if I call:

 string txt = "text";

Will it call this, behind the scenes?

 string txt = new String("text".ToCharArray())?

Upvotes: 1

Views: 120

Answers (3)

JaredPar
JaredPar

Reputation: 754575

No it will not. This code will translate directly into an IL stloc command. It will essentially compile to the following 

ldstr "text"
stloc.0

Upvotes: 2

dtb
dtb

Reputation: 217263

string txt1 = "text";

loads the string "text" from the intern pool and stores it as reference in the txt1 variable.

So, for example, if you have

string txt2 = "text"; 
string txt3 = "text";

then ReferenceEquals(txt2, txt3) == true, because both variables reference the same string object in the intern pool.

The String Constructor creates a new, non-interned string object.

string txt4 = new String("text".ToCharArray());

So ReferenceEquals(txt1, txt4) == false.

There is one exception: new String(new char[0]) returns the reference to the "" string object in the intern pool.

Upvotes: 7

pm100
pm100

Reputation: 50110

i doubt it - why would it

But why not look for yourself, run ildasm and see what code is generated

Upvotes: -1

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