strip | 易学教程

BBC micro:bit - Radio string transfer random carriage returns

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问题 I have two BBC Micro Bit and using Radio function to transfer data from one slave to the master Micro Bit. When the data is transferred I am getting random carriage returns, I am not sure what is the problem, I have tried to strip any random CR etc, but still getting the same problem. a=1,On, 12 =2, Off, 77 =3, On, 88 =================================================== Gateway code from microbit import * import radio radio.config(group=0) radio.on() while True: incoming = radio.receive() if

How to use strip_tags with second parameter in CodeIgniter?

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问题 How to strip HTML tags, but not all tags? For example i want to have <br> , <b> etc in textareas. I have this form validation rule: $this->form_validation->set_rules('user_desc', 'Opis', 'min_length[3]|max_length[200]|xss_clean|strip_tags'); 回答1: Use strip_tags() with the second argument. $stripped = strip_tags($str, '<b><br>'); You could build an array of allowable elements and then join them for the second argument with... $allowedElementsJoined = '<' . implode('><', $allowedElements) . '>'

Bundler could not find compatible versions for gem mime-types

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问题 Super baffled by this problem. Everything is working great local but when I deploy to Heroku it hits this error: Bundler could not find compatible versions for gem "mime-types": In Gemfile: rails (= 3.2.17) ruby depends on mime-types (~> 1.16) ruby stripe (>= 0) ruby depends on mime-types (2.3) I've tried gem installing mime-types 2.3 both in the gemfile and from the command line and neither have given any great results, though maybe it's from my lack of experience. If I had hair I'd be

Python: Strip Everything but Numbers

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问题 I have to extract a number (a measured time value) from each of several strings. How could I do this elegantly? All numbers are positive and have a maximum of two decimal places. (E.g.: 2.3/ 40.09/ 101.4 - no numbers in E notation). The code I am looking for should do something like the following pseudocode: >>> "It took 2.3 seconds".strip(everything but ".1234567890") 2.3 回答1: Instead of strip, select for the numbers with a regular expression: import re numbers = re.compile('\d+(?:\.\d+)?')

Stripping a string and getting start index and end index

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问题 Is there any straightforward way in Python to strip a string and get the start index and the end index? Example: Given the string ' hello world! ' , I want to the stripped string 'hello world!' As well as the start index 2 and the and index 14 . ' hello world! '.strip() only returns the stripped string. I could write a function: def strip(str): ''' Take a string as input. Return the stripped string as well as the start index and end index. Example: ' hello world! ' --> ('hello world!', 2, 14)

How to strip HTML attributes except “src” and “alt” in JAVA

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问题 How do I strip all attributes from HTML tags in a string, except "alt" and "src" using Java? And further.. how do I get the content from all "src" attributes in the string? :) 回答1: You can: Implement a SAX parser; Built a document with a DOM parser, walk it and prune it and then convert back to HTML; or Use an identity transform in XSLT (assuming your HTML is in XHTML format or can be converted to that with, say, JTidy) with some additional cases to remove attributes you don't want. Whatever

Replacing newlines with spaces for str columns through pandas dataframe

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问题 Given an example dataframe with the 2nd and 3rd columns of free text, e.g. >>> import pandas as pd >>> lol = [[1,2,'abc','foo\nbar'], [3,1, 'def\nhaha', 'love it\n']] >>> pd.DataFrame(lol) 0 1 2 3 0 1 2 abc foo\nbar 1 3 1 def\nhaha love it\n The goal is to replace the \n to (whitespace) and strip the string in column 2 and 3 to achieve: >>> pd.DataFrame(lol) 0 1 2 3 0 1 2 abc foo bar 1 3 1 def haha love it How to replace newlines with spaces for specific columns through pandas dataframe? I

gcc vs. clang: symbol stripping

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问题 gcc and AMD Open64 opencc both have a -s option to "strip symbol table and relocation information". So far I haven't been able to find the same option in Clang/LLVM. Does it exist? 回答1: You can use a strip utility from binutils. Actually, a llvm-ld has this options http://llvm.org/cmds/llvm-ld.html -strip-all, -s Strip all debug and symbol information from the executable to make it smaller. -strip-debug, -S Strip all debug information from the executable to make it smaller. opt have something

python字符串处理方法(二)

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startswith() 检查第一个字符是否是指定字符 startswith() 方法用于检查字符串是否是以指定子字符串开头，如果是则返回 True，否则返回 False。如果参数 beg 和 end 指定值，则在指定范围内检查。 str.startswith(str, beg=0,end=len(string)); #str -- 检测的字符串。 #beg -- 可选参数用于设置字符串检测的起始位置。 #end -- 可选参数用于设置字符串检测的结束位置。 endswith() 检查最后一个字符是否是指定字符 endswith() 方法用于判断字符串是否以指定后缀结尾，如果以指定后缀结尾返回True，否则返回False。可选参数"start"与"end"为检索字符串的开始与结束位置。 str.endswith(str, beg=0,end=len(string)) #str -- 检测的字符串。 #beg -- 可选参数用于设置字符串检测的起始位置，限定字符串的第一个字符。 #end -- 可选参数用于设置字符串检测的结束位置，限定字符串的最后一个字符。 find() 检测字符串中是否包含指定字符串 find() 方法检测字符串中是否包含子字符串 str ，如果指定 beg（开始）和 end（结束）范围，则检查是否包含在指定范围内，如果指定范围内如果包含指定索引值

Is the ELF .notes section really needed?

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问题 On Linux, I'm trying to strip a statically linked ELF file to the bare essentials. When I run: strip --strip-unneeded foo or strip --strip-all foo The resulting file still has a fat .notes section that appears to be full of funky strings. Is the .notes section really needed or can I safely force it out with --remove-section? Thanks for any help. 回答1: From experience and from looking at the man page for strip , it looks like strip isn't supposed to get rid of any and all sections and strings