Initializes a new instance of writer type for the specified file name, with the specified writing mode.
new writer(string fullPath, bool append)
|string||fullPath||The complete file path.|
|bool||append||A value that indicates the writing mode.|
|writer||A writer type instance that was initialized by specified value.|
writer writerInstance = new writer("c:\Users\....\target.txt", true);
It's a wrapper of the System.IO.StreamWriter.StreamWriter(String,Boolean).
This fitter creates a instance of Writer type with UTF-8 encoding without a Byte-Order Mark (BOM).
If sets the true to the second argument, the instance of writer type is initialized as append mode. Otherwise, it is initialized as overwrite mode.
Links for reference