I want to put an array of strings to a string value. What is the fastest way to copy mm to k?
string[] mm = new string[1,000,000]; // its just sample
string k = "";
2 Answers
Assuming your definition of mm changes to something like this ...
string[] mm = {"Dog", "Cat", "Mouse"};
... you can concatenate all strings of the array mm into one string using the Concat() method such as like this:
string k = System.String.Concat(mm);
It is possible that there is a faster way, but this is a convenient way to use an existing .NET Framework method which is already very well optimized.
Comments
Is this what you are looking for?
string k = String.Join("",mm)`
Use the String.Join method which accepts the array and a delimiter
BTW, your array does not have string values
If you do not need any spaces/separators between the parts you can use String.Concat which accepts a list of strings
string k = String.Concat(mm)
3 Comments
Quality Catalyst
The
Join() method starts with a delimiter, not the array. Also, the PO wasn't asking for adding delimiters in between the strings. Use Concat()!
M B
its the delimiter returning a comma separated list. If you want no spaces then do it with an empty
''Quality Catalyst
See my answer. There's also a link to the MSDN so that you read more background about
Concat().
mmis not C#!string k = string.Concat(mm);string k = string.Join(", ", mm); // if you want readability