strip | 易学教程

How to detect at runtime whether symbols are stripped?

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问题 In my C++ program, how can I detect programmatically at runtime whether symbols have been stripped via the 'strip' gnu development tool on Linux? I'd like a function definition which returns true if stripped, otherwise false. Would using dlsym() on "main()" work to detect this reliably? 回答1: I know the file command can tell the difference, so you could possibly look at its source to see what mechanism it uses. 回答2: From a comment left for another answer: A stripped ELF will lack a .symtab

How to Prevent Wordpress from Stripping HTML Tags in Excerpt

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问题 I am using wp_trim_words to trim some excerpts on my homepage. It's working fine except that it's stripping the HTML tags from the excerpts. I need to be able to make certain pieces of the excerpt bold (using <strong> ). Following the instructions here, I tried removing the wp_trim_words function and replacing it with a new one using the following code, which replaces $text = wp_strip_all_tags( $text ); from the original WP function with $text = strip_tags($text, '<strong>',); . But this

jQuery / Regex: remove all p tags [duplicate]

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问题 This question already has answers here : How to unwrap text using jQuery? (5 answers) Closed 6 years ago . I am new to Regex and hope someone can help me with the following: I have a long string that is saved as a variable. The string contains plain text and HTML tags, incl. p tags. How can I use Regex to remove all p tags from my string including classes and IDs on the p tags but without losing the text inside ? The string variable can contain one, multiple or no p tags but always contains

how to skip over lines of a file if they are empty

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问题 Program in python 3: This is my first program involving files. I need to ignore comment lines (start with #) and blank lines, and then split the lines so they are iterable, but I keep on getting and IndexError message that says string index out of range, and the program crashes on the blank line. import os.path def main(): endofprogram = False try: #ask user to enter filenames for input file (which would #be animals.txt) and output file (any name entered by user) inputfile = input("Enter name

ruby incorrect method behavior (possible depending charset)

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问题 I got weird behavior from ruby (in irb): irb(main):002:0> pp " LS 600" "\302\240\302\240\302\240\302\240LS 600" irb(main):003:0> pp " LS 600".strip "\302\240\302\240\302\240\302\240LS 600" That means (for those, who don't understand) that strip method does not affect this string at all, same with gsub('/\s+/', '') How can I strip that string (I got it while parsing Internet page)? 回答1: The string "\302\240" is a UTF-8 encoded string ( C2 A0 ) for Unicode code point A0 , which represents a non

Python crashes using pandas and str.strip

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问题 This minimal code crashes my Python. (Setting: pandas 0.13.0, python 2.7.3 AMD64, Win7.) import pandas as pd input_file = r"c3.csv" input_df = pd.read_csv(input_file) for col in input_df.columns: # strip whitespaces from string values if input_df[col].dtype == object: input_df[col] = input_df[col].apply(lambda x: x.strip()) print 'start' for idx in range(len(input_df)): input_df['LL'].iloc[idx] = 3 print idx print 'finished' Output: start 0 Process finished with exit code -1073741819 What

Strip in Python

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问题 I have a question regarding strip() in Python. I am trying to strip a semi-colon from a string, I know how to do this when the semi-colon is at the end of the string, but how would I do it if it is not the last element, but say the second to last element. eg: 1;2;3;4;\n I would like to strip that last semi-colon. Thanks 回答1: Strip the other characters as well. >>> '1;2;3;4;\n'.strip('\n;') '1;2;3;4' 回答2: >>> "".join("1;2;3;4;\n".rpartition(";")[::2]) '1;2;3;4\n' 回答3: how about replace?

Python strip() unicode string?

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问题 How can you use string methods like strip() on a unicode string? and can't you access characters of a unicode string like with oridnary strings? (ex: mystring[0:4] ) 回答1: It's working as usual, as long as they are actually unicode , not str (note: every string literal must be preceded by u , like in this example): >>> a = u"coțofană" >>> a u'co\u021bofan\u0103' >>> a[-1] u'\u0103' >>> a[2] u'\u021b' >>> a[3] u'o' >>> a.strip(u'ă') u'co\u021bofan' 回答2: You can do every string operation,

Remove a revision in TortoiseHG and Mercurial

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问题 In my repository I needed to revert to an older revision. I did reverting and made the changes I needed to. How do I push the new revision upstream? I was on rev 17 when I needed to revert back to rev 13. Now that I've made my changes, I'm on rev 18. Thing is, when I go to push these changes up (I'm using TortoiseHG), I get an error "abort:push create new remote head . I don't want to do a merge. Do I want to do a force with the --force command or do I need to delete rev 14-17. If I need to

ES学习记录10.3——ES分析器4(字符过滤器)

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字符过滤器(Character filters)用于在将字符流传递给标记生成器Tokenizer之前对其进行预处理，它负责将最原始的文本作为字符流进行接受，可以对通过添加、移除或改变字符的方式改变流。比如一个字符过滤器可以用来转换印度-阿拉伯数字٠‎١٢٣٤٥٦٧٨‎٩变成等价的阿拉伯语数字0123456789，或者从流中删除<b>这样的HTML元素。ES有很多内置的字符过滤器，可以用于自定义的分析器中，主要有： HTML Strip Character Filter：html_strip字符过滤器可以将流中的类似于<b>这样的HTML标签元素移除，并对HTML中类似于&这样的实体进行解码； Mapping Character Filter：mapping字符过滤器(映射字符过滤器)使用指定的替换字符替换指定字符串的任何出现的内容； Pattern Replace Character Filter：pattern_replace字符过滤器将与正则表达式匹配的任何字符替换为指定的替换内容； 1. html标签字符过滤器(HTML Strip Char Filter) html_strip字符过滤器从文本中删除HTML元素，并用其解码值替换HTML实体(如用&替换&，在HTML语言中&就是表示&)，如： curl -X POST "localhost:9200/_analyze"