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⚡️ Speed up function camel_to_kebab by 11% #20

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⚡️ Speed up function camel_to_kebab by 11% #20

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8 changes: 6 additions & 2 deletions panel/util/__init__.py
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Original file line number Diff line number Diff line change
Expand Up @@ -41,6 +41,10 @@
recursive_parameterized,
)

_pattern1 = re.compile(r'([a-z0-9])([A-Z])')

_pattern2 = re.compile(r'([A-Z]+)([A-Z][a-z0-9])')

log = logging.getLogger('panel.util')

bokeh_version = Version(Version(bokeh.__version__).base_version)
Expand Down Expand Up @@ -541,6 +545,6 @@ def prefix_length(a: str, b: str) -> int:
def camel_to_kebab(name):
# Use regular expressions to insert a hyphen before each uppercase letter not at the start,
# and between a lowercase and uppercase letter.
kebab_case = re.sub(r'([a-z0-9])([A-Z])', r'\1-\2', name)
kebab_case = re.sub(r'([A-Z]+)([A-Z][a-z0-9])', r'\1-\2', kebab_case)
kebab_case = _pattern1.sub(r'\1-\2', name)
kebab_case = _pattern2.sub(r'\1-\2', kebab_case)
return kebab_case.lower()