大约有 30,000 项符合查询结果（耗时：0.0282秒） [XML]
Remove not alphanumeric characters from string
...eplace(/[\f]/g, 'f')
.replace(/[\n]/g, 'n')
.replace(/\\/g, '');
Demo: http://jsfiddle.net/SAp4W/
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Java regex email
...s valid
The regex is taken from this post: Mail::RFC822::Address: regexp-based address validation. The results should coincide with online version.
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How to check if variable is string with python 2 and 3 compatibility
... in python-2.x? Or will I need to check the version and use isinstance(x, basestr) ?
10 Answers
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Why isn't `int pow(int base, int exponent)` in the standard C++ libraries?
..., the floating point would have been next to useless. BCPL, on which C was based, also had no use for powers (it didn't have floating point at all, from memory).
As an aside, an integral power operator would probably have been a binary operator rather than a library call. You don't add two integ...
A fast method to round a double to a 32-bit int explained
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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How do I find numeric columns in Pandas?
... exclude. So isNumeric would look like:
numerics = ['int16', 'int32', 'int64', 'float16', 'float32', 'float64']
newdf = df.select_dtypes(include=numerics)
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Use latest version of Internet Explorer in the webbrowser control
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11000 (0x2AF8) - Internet Explorer 11. Webpages containing
standards-based !DOCTYPE directives are displayed in IE11 edge mode.
Default value for IE11.
10001 (0x2711)- Internet Explorer 10. Webpages are displayed in IE10 Standards
mode, regardless of the !DOCTYPE directive.
10000 (0x27...
Get class name of object as string in Swift
...have to instantiate it, and found the answer here. Thanks print(String(BaseAsyncTask))
– Bruno Coelho
Oct 27 '15 at 14:16
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Strip spaces/tabs/newlines - python
... at the start
or end if the string has leading or trailing whitespace.
Demo:
>>> myString.split()
['I', 'want', 'to', 'Remove', 'all', 'white', 'spaces,', 'new', 'lines', 'and', 'tabs']
Use str.join on the returned list to get this output:
>>> ' '.join(myString.split())
'I ...
Log all requests from the python-requests module
...r more details on how to configure logging levels and destinations.
Short demo:
>>> import requests
>>> import logging
>>> logging.basicConfig(level=logging.DEBUG)
>>> r = requests.get('http://httpbin.org/get?foo=bar&baz=python')
DEBUG:urllib3.connectionpool...