/// <summary>Concatenates the elements of an array, using the specified seperator between each element.</summary>
public static string Join <T>(string separator, IEnumerable <T> values)
{
var sb = new Utf16ValueStringBuilder(true);
try
{
var isFirst = true;
foreach (var item in values)
{
if (!isFirst)
{
sb.Append(separator);
}
else
{
isFirst = false;
}
sb.Append(item);
}
return(sb.ToString());
}
finally
{
sb.Dispose();
}
}
static string JoinInternal <T>(ReadOnlySpan <char> separator, IList <T> values)
{
var count = values.Count;
if (count == 0)
{
return(string.Empty);
}
else if (typeof(T) == typeof(string) && count == 1)
{
return(Unsafe.As <string>(values[0]));
}
var sb = new Utf16ValueStringBuilder(true);
try
{
for (int i = 0; i < count; i++)
{
if (i != 0)
{
sb.Append(separator);
}
var item = values[i];
if (typeof(T) == typeof(string))
{
var s = Unsafe.As <string>(item);
if (!string.IsNullOrEmpty(s))
{
sb.Append(s);
}
}
else
{
sb.Append(item);
}
}
return(sb.ToString());
}
finally
{
sb.Dispose();
}
}
/// <summary>Concatenates the elements of an array, using the specified seperator between each element.</summary>
public static string Join <T>(char separator, ReadOnlySpan <T> values)
{
var sb = new Utf16ValueStringBuilder(true);
try
{
for (int i = 0; i < values.Length; i++)
{
if (i != 0)
{
sb.Append(separator);
}
sb.Append(values[i]);
}
return(sb.ToString());
}
finally
{
sb.Dispose();
}
}
/// <summary>Concatenates the elements of an array, using the specified seperator between each element.</summary>
public static string Join <T>(char separator, List <T> values)
{
var sb = new Utf16ValueStringBuilder(true);
try
{
var count = values.Count;
for (int i = 0; i < count; i++)
{
if (i != 0)
{
sb.Append(separator);
}
sb.Append(values[i]);
}
return(sb.ToString());
}
finally
{
sb.Dispose();
}
}
static string JoinInternal <T>(ReadOnlySpan <char> separator, IEnumerable <T> values)
{
var sb = new Utf16ValueStringBuilder(true);
try
{
var isFirst = true;
foreach (var item in values)
{
if (!isFirst)
{
sb.Append(separator);
}
else
{
isFirst = false;
}
if (typeof(T) == typeof(string))
{
var s = Unsafe.As <string>(item);
if (!string.IsNullOrEmpty(s))
{
sb.Append(s);
}
}
else
{
sb.Append(item);
}
}
return(sb.ToString());
}
finally
{
sb.Dispose();
}
}
public override void Write(char value)
{
AssertNotDisposed();
sb.Append(value);
}