c# - What does $ mean before a string? -


i going use verbatim string mistakenly typed $ instead of @.

but compiler didn't give me error , compiled successfully.

i want know , does. searched couldn't find anything.

however not verbatim string because can't write:

string str = $"text\";

does know $ before string stand in c#.

string str = $"text";

i'm using visual studio 2015 ctp.

$ short-hand string.format , used string interpolations, new feature of c# 6. used in case, nothing, string.format() nothing.

it comes own when used build strings reference other values. had written as:

var anint = 1; var abool = true; var astring = "3"; var formated = string.format("{0},{1},{2}", anint, abool, astring);

now becomes:

var anint = 1; var abool = true; var astring = "3"; var formated = $"{anint},{abool},{astring}";

there's alternative - less known - form of string interpolation using $@ (the order of 2 symbols important). allows features of @"" string mixed $"" support string interpolations without need \\ throughout string. following 2 lines:

var somedir = "a"; console.writeline($@"c:\{somedir}\b\c");

will output:

c:\a\b\c

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