added sharptoken as exampel

Author: dmitry-brazhenko

examples/How_to_count_tokens_with_tiktoken.ipynb

@@ -1,7 +1,6 @@
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@@ -35,8 +34,9 @@
     "\n",
     "## Tokenizer libraries by language\n",
     "\n",
-    "For `cl100k_base` and `p50k_base` encodings, `tiktoken` is the only tokenizer available as of March 2023.\n",
+    "For `cl100k_base` and `p50k_base` encodings:\n",
     "- Python: [tiktoken](https://github.com/openai/tiktoken/blob/main/README.md)\n",
+    "- .NET / C#: [SharpToken](https://github.com/dmitry-brazhenko/SharpToken)\n",
     "\n",
     "For `r50k_base` (`gpt2`) encodings, tokenizers are available in many languages.\n",
     "- Python: [tiktoken](https://github.com/openai/tiktoken/blob/main/README.md) (or alternatively [GPT2TokenizerFast](https://huggingface.co/docs/transformers/model_doc/gpt2#transformers.GPT2TokenizerFast))\n",
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@@ -221,15 +214,13 @@
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     "## 4. Turn tokens into text with `encoding.decode()`"
    ]
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@@ -257,15 +248,13 @@
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     "Warning: although `.decode()` can be applied to single tokens, beware that it can be lossy for tokens that aren't on utf-8 boundaries."
    ]
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@@ -293,15 +282,13 @@
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     "(The `b` in front of the strings indicates that the strings are byte strings.)"
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@@ -563,9 +549,8 @@
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