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正则表达式 30 分钟入门教程 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...(wildcard)，也就是*和?。如果你想查找某个目录下的所有的Word文档的话，你会搜索*.doc。在这里，*会被解释成任意的字符串。和通配符类似，正则表达式也是用来进行文本匹配的工具，只不过比起通配符，它能更精确地描述你的...
window.onload vs $(document).ready()
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@Tim Down: reasonably is the key word here; at least some object sniffing used to be necessary, even with onload (there are differences wrt FF/IE/Opera). As for the DOMContentLoaded, you are entirely correct. Editing to clarify.
– Piskv...
How to redirect cin and cout to files?
...cout.rdbuf(out.rdbuf()); //redirect std::cout to out.txt!
std::string word;
std::cin >> word; //input from the file in.txt
std::cout << word << " "; //output to the file out.txt
f(); //call function
std::cin.rdbuf(cinbuf); //reset to standard i...
What is a magic number, and why is it bad? [closed]
...example, if you have (in Java):
public class Foo {
public void setPassword(String password) {
// don't do this
if (password.length() > 7) {
throw new InvalidArgumentException("password");
}
}
}
This should be refactored to:
public class Foo {
...
n-grams in python, four, five, six grams?
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Using only nltk tools
from nltk.tokenize import word_tokenize
from nltk.util import ngrams
def get_ngrams(text, n ):
n_grams = ngrams(word_tokenize(text), n)
return [ ' '.join(grams) for grams in n_grams]
Example output
get_ngrams('This is the simplest text i c...
Remove ALL styling/formatting from hyperlinks
I'm creating a navigation menu with words with different colors ( href links). I would like the color NOT to change on any state (hover, visited etc).
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Split string based on regex
... best way to split a string like "HELLO there HOW are YOU" by upper case words (in Python)?
3 Answers
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Insert picture/table in R Markdown [closed]
So I want to insert a table AND a picture into R Markdown. In regular word document I can just easily insert a table (5 rows by 2 columns), and for the picture just copy and paste.
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Boolean vs boolean in Java
...se a Boolean, or not. A boolean inside of an object is alway as big as the word size of the VM, so it is usually the same size as a reference/pointer to a Boolean. On the stack that might be different. But when it is jitted, it is safe to assume it has the size of a machine word fitting to the CPU. ...
Python's most efficient way to choose longest string in list?
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def longestWord(some_list):
count = 0 #You set the count to 0
for i in some_list: # Go through the whole list
if len(i) > count: #Checking for the longest word(string)
count = len(i)
word =...